Southern Skywatch has been online for 16 years; yes, the competition will happen, eventually.
Useful info for visitors from New Zealand, South Africa and South America.
September 1; Mars and the Moon close. September 8, Moon at Perigee. September 20; Moon at Apogee; Mercury close to bright star Spica; Jupiter close to crescent Moon. September 23, Mars close to globular cluster M80. September 26; crescent Moon close to Mercury and Spica. September 28; crescent Moon close to Saturn. September 28-30, Mars and bright red star Antares close. September 29; Moon close to Mars and Antares. Comet C/2013 V5 visible in binoculars in the morning.
Looking up at the stars is still a rewarding pursuit, despite the increasing light pollution in our major cities. The southern sky is full of interesting objects, many of which go unseen in the northern hemisphere. All you need for a good nights viewing is yourself, a good idea of where south and east are, and your hands. Optional extras are a small pair of binoculars, a torch with red cellophane taped over the business end and a note book. A great many tips for backyard astronomy may be found here, although many of them are more relevant to the northern hemisphere. A general article on amateur astronomy from New Scientist is here (May require subscription otherwise see the TASS site.).
This page is designed to give people a simple guide to the naked eye sky. In the descriptions of planet and star positions, distances in the sky are given as "fingers width" and "hand span". This is the width of your hand (with all the fingers together as in making a "stop" sign, not bunched as a fist) or finger when extended a full arms length from you.
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Spring is here! Spring brings the wattle flowers and a new round of interesting objects into view in the heavens. Scorpio and Sagittarius slowly leave our night skies to be replaced by Orion and its nebulae, and bright Sirius. The Southern Cross grazes the southern horizon before rising again in summer. It still gets very cold at night, so don't forget to rug up before doing any extended star watching. A blanket or rug to sit on is a good idea, as well as a thermos of your favorite hot beverage.
While these pages are primarily intended for the use of people observing in Australia, non-Australian Southern Hemisphere observers will find most of the information here applies to them. The star information will be most helpful, when you correct your location for latitude (see the Stars section for appropriate location information). Most Moon phase, planet, comet and asteroid information will be very similar to what will be seen in New Zealand, South Africa and South America. Countries close to the equator (eg Indonesia) will have somewhat different southern and northern views, but the eastern and western views should be similar enough to get a good idea of what is going on.
Occultations, eclipses and aurora are highly location dependent, and it would be best to get a local almanac for these events. If there is no local almanac available, email me and I might be able to help you. I do try and give general info for occultations and eclipses in the Oceania area of the Southern Hemisphere.
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Aurora Alert UPDATED 26/02/14: There was a very good auroral event on 22 February, seen in NSW, Victoria, SA and WA as well as Tasmania. Last year, a coronal mass ejection from an M class flare hit us square on on March 17 2013. Aurora were detected as far north as the QLD border, with some really nice events in Tasmania, and here are some images from that event. The Sun is now at solar maximum, but has been rather disappointing so far apart from the odd event like the 17 March one and the unexpected 22 February one. We may see more aurora in the near future.
Auroral images and descriptions from past geomagnetic storms are now at the auroral image web page.
We are now at solar maximum in 2014, and we can hope to see an increasing frequency of aurora, although it has been generally disappointing with some exceptions. Tasmania, King Island and Southern Victoria are the most likely places to see aurora. However, on August 24, 2005 there was a massive auroral storm seen as far as northern NSW (and the 22 February one this year was seen as far north as southern NSW). Naturally, the best views of any aurora will be away from the city and bright lights. Aurora occur when charged particles from the solar wind enter Earths outer atmosphere and interact with the oxygen and nitrogen atoms producing eerie displays of coloured lights. During solar maximum, which occurs every 11 years, the number and speed of the particles are higher, allowing them to penetrate the Earth's magnetic field at lower latitudes than normal. Observers in Tasmania are likely to see green glows or sheets of light in the southern sky. Observers in Southern Victoria are more likely to see a red glow in the southern sky, although more spectacular displays are possible.
The Astronomical Society of Tasmania has a webpage devoted to this phenomenon. The Australian IPS radio and space services covers Aurora and related phenomena in very great detail (too much if you don't know much about them) but has a nice education page. Flinders Uni also has real time magnetometer readings, however, this will probably not mean much to most people.
Aurora will generally follow solar flares by about 2 days, and a number of instruments are watching the sun for these outbursts. The solar minimum occurred in 2006 and persisted for some time. While sunspot numbers, and hence flare rates are increasing, sometimes months will go by without an alert, then you have three in a week. The space weather site at http://www.spaceweather.com gives notice of when solar winds likely to cause aurora will arrive. Alternatively, send an email to firstname.lastname@example.org with "subscribe aurora alert" as the subject and I will send you an email alert of any likely auroral event (or other interesting sky phenomena). However, even a strong solar flare is no guarantee that you will be able to see aurora, but it does increase the probability. Still more alternatively, there are the facebook pages Aurora Australis Tasmania, Aurora Australis Tasmania NOW! and Aurora Australis all do discussions and alerts.
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Email alerts I try to update this page fairly regularly outside of the monthly postings. However sometimes things happen which I can't get in fast enough, or you forget to mark your calendar. If you would like to be alerted to or reminded of interesting astronomical or sky phenomena, send an email to email@example.com with "subscribe aurora alert" as the subject. This is the old aurora alert list, but with auroras rare as we climb out solar minimum (except for the occasional humdinger, like the August 2005 auroral event), it is doing double duty. Astroblog will have images when possible of these events soon after.
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6 January 2014; Jupiter at opposition
15 January 2014; Moon Near Jupiter
23 January 2014; Moon Near Mars
26 January 2014; Moon Near Saturn
29 January 2014; Moon Near Venus
11 February 2014; Moon Near Jupiter
19 February 2014; Moon Near Mars
22 February 2014; Moon Near Saturn
22 February 2014; Ocultation of Saturn
26 February 2014; Moon Near Venus
28 February 2014; Moon Near Mercury
10 March 2014; Moon close to Jupiter
18 March 2014; Moon close to Mars
20-21 March 2014; Moon close to Saturn
27-28 March 2014; Moon close to Venus
29 March 2014; Moon close to Mercury
7 April 2014; Moon close to Jupiter
9 April 2014; Mars at opposition
14 April 2014; Moon close to Mars
15 April 2014; Total Lunar Eclipse
17 April 2014; Moon close to Saturn
26 April 2014; Moon close to Venus
29 April 2014; Annular eclipse of the Sun
4 May 2014; Moon and Jupiter close together.
7 May 2014; Eta Aquariid meter shower.
11 May 2014; Moon and Mars close together.
11 May 2014; Opposition of Saturn.
14 May 2014; Moon and Saturn close.
14 May 2014; Occultation of Saturn.
26 May 2014; Moon close to Venus
1 June 2014; Crescent Moon and Jupiter close together.
7-8 June 2014; Moon and Mars close together.
10 June 2014; Moon and Saturn close.
25 June 2014; Crescent Moon and Venus close.
26 June 2014; Crescent Moon near Mercury.
29 June 2014; Crescent Moon near Jupiter.
6 July 2014; Moon, Spica and Mars close.
8 July 2014; Moon and Saturn close.
13 July 2014; Mars and star Spica closest.
24 July 2014; Venus and crescent Moon close.
25 July 2014; Mercury and crescent Moon close.
3 August 2014; Mars and waxing Moon close.
4 August 2014; Occultation of Saturn by Moon.
18 August 2014; Venus and Jupiter close.
24 August 2014; Venus and crescent Moon close.
25 August 2014; Mars and Saturn close.
27 August 2014; Mercury and crescent Moon close.
31 August 2014; Saturn and Moon close.
September: Comets C/2012 K1 PanSTARRS and C/2103 V5 Oukaimaden (just) visible to the unaided eye
1 September 2014; Moon close to Mars.
20 September 2014; Mercury and Spica close.
20-21 September 2014; Moon close to Jupiter.
26 September 2014; Crescent Moon close to Mercury and Spica.
28 September 2014; Moon and Saturn close.
29 September 2014; Moon and Mars close.
October: Comets C/2012 K1 PanSTARRS and C/2103 V5 Oukaimaden (just) visible to the unaided eye, comet C/2013 A1 Siding Spring comes close to Mars
8 October 2014; Total Eclipse of the Moon.
18 October 2014; Moon close to Jupiter.
22 October 2014; Orionid meteor shower.
28 October 2014; Mars close to crescent Moon.
15 November 2014; Moon close to Jupiter.
26 November 2014; Moon close to Mars.
17 November 2014; Leonid Meteor Shower.
11-12 December 2014; Moon close to Jupiter.
15 December 2014; Geminid Meteor shower.
20 December 2014; Crescent Moon close to Saturn.
23 December 2014; Crescent Moon close to Venus and Mercury.
Out in Space
Cassini reveals 101 Geysers.
Mars Curiosity Rover prepares for the comet.
Mars Express finds mysterious mounds.
The Mars Reconaissance Orbiter sees Curiosity.
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First quarter on the 2nd
Current Phase of the Moon.
Full moon on the 9th
Last quarter on the 16th
New Moon is on the 24th
September 1; Mars and the Moon close. September 8, Moon at Perigee. September 20; Moon at Apogee; Jupiter close to crescent Moon. crescent Moon close to Mercury and Spica. September 28; crescent Moon close to Saturn. September 29; Moon close to Mars and Antares.
An interactive calendar of the Moon's phases.
A view of the phase of the Moon for any date from 1800 A.D. to 2199, US based, so that the Moon is upside down with respect to us. The image above is from this source.
The phases of the Moon have been linked in the popular imagination to activities as diverse as madness and menstruation. However, careful study has shown that there are no such links. This web page outlines how the Moon is unconnected with a wide range of human activities.
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Finding planets, even with the directions below, can sometimes be difficult if you are unfamiliar with the sky. However, the Moon is very obvious, and can be a guide to location of planets. Not only that, the combination of the Moon and bright planet(s) is often very beautiful. Thus the guide below gives the dates when the planets and the Moon are close together.
The morning sky facing east in Melbourne on September 20 at 5:00 am AEST showing the the eastern horizon with Moon near Jupiter. (similar views will be seen from other cities at the equivalent local time eg 5:00 am ACST Adelaide.
The evening sky facing north-west in Melbourne on September 26 at 7:00 pm AEST showing the Moon and Mercury close together. (similar views will be seen from other cities at the equivalent local time eg 7:00 pm ACST Adelaide).
Mercury is at its best in the evening sky this month. On the 1st, Mercury is just over two hand-spans from the western horizon half an hour after sunset. On the 15th Mercury is two hand-spans above the western horizon, an hour after sunset. By the 20th, Mercury is just over two hand-spans from the western horizon, an hour after sunset. At this time it is less than a finger-width from the bright start Spica. Mercury is at its highest on the 22nd. On the morning of September 26 the thin crescent Moon forms a triangle with Mercury and Spica. By the 30th, Mercury is just two hand-spans from the western horizon an hour after sunset.
Venus is now lost in the twilight. It will reappear in the evening sky in early December.
Earth is at equinox on Tuesday, 23 September. At this time day and night are roughly equal in duration.
Mars is prominent in the early evening sky this month. Red (well, sort of orange) Mars moves through the constellation of Scorpius. On September 1 Mars is nearly five handspans above the western horizon at 10:00 pm local time. The Moon is close to Mars on the 1st. By September 15th Mars is 3 handspans above the western horizon at 10:00 pm local time. On the 20th Mars is less than a finger-width from the globular cluster M80, this will look nice in binoculars. On the 28th to 30th Mars is just over 3 finger-widths from the bright red star Antares (the name means "rival of Mars"). By the 30th, Mars is just over 2 hand-spans above the western horizon at 10:00 pm local time.
Jupiter climbs higher in the morning sky this month. On September 1 Jupiter is just over a hand-span above the eastern horizon half an hour before sunrise. On September 15 Jupiter just over a hand-span and a half above the eastern horizon an hour before sunrise. On September 20-21 Jupiter is around a four finger-widths from the crescent Moon. On September 30 Jupiter is over two hand spans above the eastern horizon an hour before sunrise.
This table was created using The Planets 2.02 a free program available from http://www.cpac.org.uk Times are AEST, subtract 30 minutes for ACST and 3 hours for AWST. Subtract 1 hour for standard time. GRS = Great Red Spot. S = Shadow Transit, T = Transit Wed 3 Sep 6:21 Io : Shadow Transit Begins S Thu 4 Sep 6:25 Io : Reappears from Occultation Sun 7 Sep 6:36 GRS: Crosses Central Meridian Mon 8 Sep 6:11 Eur: Transit Ends Thu 11 Sep 5:22 Io : Disappears into Eclipse Fri 12 Sep 5:01 Io : Shadow Transit Ends T Fri 12 Sep 5:46 GRS: Crosses Central Meridian Fri 12 Sep 5:47 Io : Transit Ends Mon 15 Sep 6:06 Eur: Transit Begins ST Wed 17 Sep 4:55 GRS: Crosses Central Meridian Fri 19 Sep 4:37 Io : Shadow Transit Begins S Fri 19 Sep 5:28 Io : Transit Begins ST Sat 20 Sep 4:55 Io : Reappears from Occultation Sun 21 Sep 5:18 Cal: Disappears into Occultation Tue 23 Sep 5:45 Gan: Disappears into Eclipse Wed 24 Sep 5:43 GRS: Crosses Central Meridian Sun 28 Sep 4:15 Io : Transit Ends Mon 29 Sep 4:52 GRS: Crosses Central MeridianSaturn was at opposition (when it is biggest and brightest as seen from Earth) last month, but is still easily seen in the evening sky. Saturn is still easy to view in telescopes in the early evening as it is reasonably high above the horizon after twilight. Saturn spends the month in Libra. On September 1 Saturn is is a little under three handspans above the western horizon at 10:00 pm local time. On September 15 Saturn is nearly six handspans above the western horizon an hour and a half after sunset. On September 28 the crescent Moon is close to Saturn. By September 30 Saturn is a little under 4 handspans above the western horizon an hour and a half after sunset.
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Iridium Flares, the International Space Station and other satellites
See this amazing site for images of the space station taken through a telescope.
Iridium flares add a bit of spectacle to the night sky. The Iridium satellite network was set up to give global phone coverage, so an Iridium satellite is almost always over head. Occasionally, one of the antenna of the satellites is aligned so that it reflects the sun towards an observer, giving a brilliant flare, often out-shining Venus. However, the visibility of Iridium flares is VERY dependent on observer position, so you need a prediction for your spot within about 30 km. Hence I'm referring you to a web site for predictions rather than doing it myself.
See an Iridium Flare at your Location. Courtesy of Heavens above. Choose your location from the drop down box
- Heavens above, an excellent site. You need to choose your location or manually enter a longitude and latitude (once done the site remembers this). Predicts Iridium Flare occurrence, and gives the visibility the space shuttle, the International space station and heaps of other satellites. I find this the most useful site.
Or type in Your Latitude and Longitude in decimal format eg Darwin is -12.461 130.840 , to find your Lat Long go to this site.
See the International Space Station at your Location. Courtesy of Heavens above. Choose your location from the drop down box
Or type in Your Latitude and Longitude in decimal format eg Darwin is -12.461 130.840 , to find your Lat Long go to this site.
Another site, JPASS, doesn't do Iridium flares, but is very cool and does the International Space Station, and many other satellites. However, although the output is flashy, it's harder to use than heavens above.
- The JPASS site from NASA.
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Date Meteor Shower ZHR Illumination
The figure ZHR is zenithal hourly rate. This is the number of meteors that a single observer would see per hour if the shower's "point of origin", or radiant, were at the zenith and the sky were dark enough for 6.5-magnitude stars to be visible to the naked eye. Illumination gives an idea of how dark the sky is, the lower the figure, the darker the sky.
There are no major meteor showers this month.
You can still see sporadic meteors. Rates seen from the Southern Hemisphere are around 5 random meteors being seen per hour during the late morning hours and 2 per hour during the evening. The evening rates will be reduced during the times around the full Moon due to interference by the Moons light.A good page describing meteor watching is at the Sky Publications site.
The Meteor Section of the Astronomical Society of Victoria has some good information on meteor watching too.
Learn how to take a meteor shower photograph.
A Cool Fact about meteor speeds
A good page on detecting meteors using home made radio-telescopes is here.
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There are currently no comets observable with the unaided eye. However, two C/2013 V5 and C/2013 A1 Siding Spring may be visible in binoculars. C/2013 V5(Oukaimeden)is low in the morning skies. Reported to be around magnitude 6.6, it will continue to brighten as it heads towards the Sun. It may reach magnitude 5, but will be heading into the twilight. So it is unlikely to be visible with the unaided eye, but binoculars or small telescopes should show it as a small fuzzy patch. A B&W spotters map is available here and a binocular map is here .C/2013 A1 (Siding Spring) is at its brightest this month, heading for a rendezvous with Mars in October. Unfortunately its brightest will be around magnitude 8. Not really evident in binoculars but reachable in a small telescope. Towards the end of the month it passes close to some very nice deep sky objects. A B&W spotters map is available here . A list of current comet ephemerides is at the MPC.
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No interesting naked-eye occultations this month.
No significant eclipses this month.
Find local sunrise/sunset and twilight times for your city or location (courtesy of Heavens Above).
Use either the drop down box for the listed cities, or type in your latitude, longitude and city in the boxes below.
Type in Your Latitude and Longitude in decimal format eg -12.461 130.840 , to find your Lat Long go to this site.
While most stars seem to shine with a constant brightness, there are some that undergo regular, dramatic change in brightness. The classic variables Mira and Algol are currently unobservable.
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The southern evening sky at 10:00 pm AEDST in Melbourne on September 1 (similar views will be seen from other cities at the equivalent local time eg 10:00 pm ACDST Adelaide).
All descriptions here are based on the view from Melbourne at 10.00 pm AEDST (Australian Eastern Standard Time) on 1 September and assumes a fairly level horizon. Starset occurs progressively earlier each day, so these descriptions are valid for 9.00 pm on the 15th and 8.00pm on the 30th. Readers from other time zones should see roughly the same views at 10.00 pm local time. Corrections for cities other than Melbourne are given below.
How do I find east, west, north and south?
- Readers in Adelaide and Auckland should see roughly the same views at the local equivalent of 10.00 pm AEDST.
- Readers in Hobart and Christchurch must decrease descriptions to the North by about five finger widths and increase those to the south by the same amount.
- Readers in Sydney, Fremantle, Perth, Santiago and Capetown should add 3 finger widths to the northern descriptions, and subtract 3 finger widths to the south.
- Readers in Brisbane, Alice Springs, Rio deJanerio and Johannesburg must adjust North/South descriptions by two hand spans.
- Readers in Darwin, Cairns, Brazilia, La Paz, Lusaka and Lima must adjust North/South descriptions by about 4-5 hand spans.
Facing east, the faint constellation of Erandius, the river, straddles the the horizon and meanders upwards and southwards to where brightest star, Achernar, points to the small Magellanic cloud.
To the left is Cetus, the whale. Beta Ceti is a modestly bright star six handspans above the horizon, the rest of Cetus is relatively faint. Mira, Omicron Ceti (O on the maps) is a variable star with a period of about 332 days.
Cetus also hosts a nearby sun like star. Tau Ceti is 11.4 light years away from earth, looking 10 handspans up from east and two to the left is magnitude 2 Deneb Kaitos, beta Ceti. Two handspans below and slightly to the left is eta Ceti, two handspans to the right of eta Ceti, forming a triangle with eta and beta, is Tau Ceti.
Five handspans to the left of Cetus is Pisces, a rather non-descript constellation.
Continuing on to the zenith we find bright Fomalhaut, alpha star of Piscis Austrinus. Next to Fomalhaut is Grus, the crane, with a distinctive, battered cross-like shape.
Looking westward from the zenith, about four handspans down and three to the right is the battered triangle of Capricornius, the Water Goat. Of interest as well is alpha Capricorni, the brightish star at top left hand corner of the triangle that is Capricorn. This is a naked eye double star.
About mid-sky, directly west is the distinctive "teapot" shape of Sagittarius, the archer. The "teapot" is upside down, the "spout" is pointing south-west, its "handle" north-east, and its "lid" points down to the right (north-eastern horizon). This constellations panoply of clusters and nebula are still easily seen.
M24, an open cluster about two fingerwidths to the right and slightly down from the "lid" of the teapot should be visible to the naked eye, just above this and slightly to the left by about a hand span is a number of open clusters and a patch of luminosity that marks the lagoon nebula. M22, a globular cluster, is close to the lid (between and about a fingerwidths left of the two stars that make the bottom of the lid), should be visible as a dim, fuzzy star on a dark night. Between these clusters and the "lid" itself runs the Great Sagittarius Star-cloud. The center of our galaxy lies in Sagittarius, and on a dark night, the traceries of the Milky Way and its dust clouds are particularly beautiful. A high definition map of Sagittarius can be found here.
Continuing on west, the rambling constellation of Ophiucus occupies the space between Sagitarius and the western horizon.
Directly to the left of Ophiuchus is the distinctive "hook" shape of Scorpio, the scorpion, stretches down towards the western horizon. Going up from the south-western horizon by about two handspans you will see six bright stars forming a T, with the tail of the "T" nearly perpendicular to the horizon and a curved "tail" of stars. The bright red giant star Antares (Alpha Scorpius, the middle star in the three stars forming the tail of the T) is quite prominent. The area around Scorpio is quite rewarding in binoculars, and there is a small but pretty globular cluster about one fingerwidth above and to the north of Antares (between Antares and the leading star of the tail of the T). It can be hard to see in city conditions, and will be especially difficult to see this close to the horizon. A high definition map of Scorpio is here. Just before the point where the tail curves around is a series of star clusters that make up the so-called false comet. The illusion of a comet is quite strong in small binoculars as well, but in stronger binoculars the clusters are quite clear.
Returning to the Zenith and working towards the northern horizon. 6 handspans down from the zenith is the faint but rambling constellation of Aquarius.
12 handspans down from the Zenith (and six above the northern horizon) is the start of the constellation Pegasus, the winged horse. The distinctive box shape of the main constellation lies around three handspans to the right of due north.
At the same level as Pegasus, but seven handspans to the left is the three bright stars that mark Aquila, the Eagle, with the brightest, white Altair, being in the center.
Continuing down towards the northern horizon, the next bright star is just a handspan above the horizon, and three handspans to the left of due north. This is Deneb, alpha star of Cygnus, the swan. The rest of the constellation forms a wide but distinctive inverted cross above Deneb with the long axis pointing west, almost parallel to the horizon.
Now return to the zenith and go South. Directly south below Grus brings you to the edge of the dim constellation of Tucana, the Toucan. About four handspans below the zenith, directly on due north, is Alpha Tucana. Just below Tucana and about a handspan and a half to the left is the Small Magellanic cloud, the second largest of the dwarf satellite galaxies to the Milky Way. This feature is best viewed on a dark night, away from the city. In this nebulosity is what looks to be a fuzzy star, this is 47 Tucana (marked 104 on the map), a spectacular globular cluster that is very nice through binoculars.
To the right of alpha Tucana by around three handspans is Peacock, alpha Pavonis, is a reasonably bright magnitude 2 star that heads the large, but dim, constellation of Pavo the Peacock. Delta Pavonis, about two handspans below and one to the left of alpha Pavonis, is one of the handful of sun-like stars within 20 lightyears of Earth that might have terrestrial planets in its habitable zone.
To the right of and some what below Delta Pavonis by about 4 handspans is the boxy shape of Ara, the Altar.
To the left of alpha Tucana by 5 handspans is Ankaa, alpha Phoenicis, of the constellation of the Phoenix, another relatively non-descript constellation.
To the left of alpha Tucana by 5 handspans and down by about one is bright Achernar, alpha Erandius.
Continuing directly down from alpha Tucana by four handspans is Octans, the octant (a navigating instrument the was the forerunner of the sextant). Octans houses the south celestial pole, and the faint Sigma Octanis, the South Polar star, which is the southern equivalent of Polaris. At magnitude 5.5 you will be stretched to see it under city conditions, but it is six handspans directly below alpha Tucana, forming the apex of an inverted triangle with two other faint stars (tau and chi Octanis).
Directly below Octans by around three handspans is the faint Chameleon, a narrow "kite" of four stars with the long axis parrallel to the horizon. To the left of Chameleon by a little over 3 handspans is the extended nebulosity of the Large Magellanic cloud, the largest of the dwarf satellite galaxies. Binoculars will reveal a rather attractive nebula near it, the Tarantula nebula.
To the right of Chameleon by around five handspans are the bright, distinctive alpha and beta Centauri, the so called "pointers", 4 handspans from the south-west horizon, with alpha being the yellow star which is furthest from the horizon, and beta the blue white star below. Between these stars and Chameleon lies the faint constellation Musca the fly. Between the pointers and Pavo lie the dim triangular constellations of Trianglum and Circinus (the compass). Most of the rest of Centaurus, the Centaur, is too close to, or below, the Horizon to be seen properly.
Alpha Centauri is the closest star to our sun at around 4 light years. However, recent measurements with the Hippacaros satellite put the system 300 million kilometers further away than previously thought. Alpha Centauri is actually a triple star, consisting of two sun-like stars and a red dwarf, Proxima centauri, which is the closest of the triple stars to earth.
Returning to alpha Centauri, following a line south through the "pointers" brings you to the Southern Cross, two handspans below and to the left the pointers (one and a half handspans from beta Centauri to beta Crucis) and two handspans above the horizon at about the 5 o'clock position on a clock. A high definition map of Centaurus and Crux is here.
The Southern Cross is, as expected, a cross shaped formation with Acrux (alpha Crucis) and gamma Crucis forming the long axis of the cross (pointing down to the south-west, with bright Acrux on the end of the axis away from the horizon). Beta and delta Crucis, now nearly horizontal, form the cross piece of the cross. Just to the right Acrux is the coal sack. This dark area against the glow of the milky way represents a large dust cloud and is usually clearly visible in dark skies, but will be hard to see this close to the horizon. The Jewel box in the Cross is a small open cluster just above Beta Crucis. It is quite beautiful, but requires strong binoculars or a small telescope to see properly.
Just on the southern horizon, almost due south is Carina (the keel of the former constellation Argo Navis). Its position makes viewing the many spectacular clusters in this constellation difficult or impossible. However, bright Canopus is now two handspans from the south-eastern horizon, almost directly below the large Magellanic cloud, and will continue to rise in the following weeks.
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How to use the maps
Comparison of a section of a skymap showing the Southern Cross (Crux) and pointers, with the appearance of the night sky. The map and sky are for September 1 at 10.00 pm, facing south. Both show approximately 30 degrees (5 handspans) of sky just above the horizon
The maps look a little busy, as they cover all sky from horizon to zenith. The grid lines are navigational helpers; each horizontal or vertical line covers 30 degrees of arc (the gridlines in the illustration show 15 degrees of arc), which is roughly five handspans (where a handspan is the width of your hand, held flat light a "stop" sign at arms length). As you can see from the way the lines bunch up. The map is a little distorted, due to trying to project a spherical surface on a flat surface. The horizon is the lowest curved line on the map (for technical software reasons I can't block things out below the Horizon). Constellations are linked by lines and their names are in italics. Stars are shown as circles of varying size, the bigger the circle the brighter the star. The stars are named with their Bayer letter (eg a - alpha, the brightest star in a constellation, a Crucis is the brightest star in Crux). Variable stars are shown as hollow circles, double stars are marked with a line (eg a, b and g Crucis are all double stars, that look quite beautiful in a small telescope). Clusters and Nebula brighter than magnitude 6.0 are marked as broken circles (eg the Jewel box cluster next to b Crucis above which is best viewed in binoculars or a telescope) and squares respectively. To find Crux for example, locate Crux on the appropriate map (eg see the illustration above). Holding the Map, face either east or west (depending on the map), then use the grid lines to determine how far over and up you should look, then look for the Crux pattern in that part of the Sky.
GIF MapsA view of the Eastern September sky at 10.00pm AEDST on 1 September can be downloaded here (sepsky_e.gif 30 Kb) and a view of the western September sky can be downloaded here (sepsky_w.gif 30 Kb). These are more compact files but don't have a lot of resolution.
If you wish to print the GIF maps directly from Netscape you must set the printer in landscape mode and you must set the margins to 0 cm (yes, that's right, 0 cm) or the maps will not print correctly.
PDF MapsHigh Resolution PDF files can be obtained for the eastern (110 Kb) and the western (110 Kb) horizon maps.
The Zenith Map (110 Kb) shows you the whole sky. You will need to face the one of the compass points, then hold the map with the appropriate compass point on the map at the bottom of the page.
You will need a PDF viewer such as Adobe Acrobat or GhostView to view and print them. They look slightly worse on-screen than the GIF files, but print much better and come with legends.
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Cheers! And good star gazing!
Ian's Astrophotography GallerySome of the photographs/images I have taken in recent years of astronomical phenomena that may be of interest.
- Partial Lunar eclipse. Partial Lunar eclipse, July 5, 2001
- My Solar eclipse report. Pictures from the Dec 4, 2002 solar eclipse in South Australia
- Transit of Mercury pictures! 7 May 2003
- Images of the partial solar eclipse 24 Nov 2003
- Transit of Venus July 8 2004 report
- Images of Jupiter, taken, after an enormous struggle, with my webcam, April 2005
- Mosaics of the Moon, more fun with my webcam, April-May 2005
- Animation of Sunrise on the Moon November 2006
- Animation of A shadow Transit on Jupiter May 2007
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- OnLine Astronomical Societies in Australia, from the Astronomical Society of New South Wales Inc.
- Astronomical Society of Australia
- Mornington Peninsula Astronomy Society
- Astronomy Guild of Australia
- Ice in Space
- A clickable star map for Victoria
- Monthly free Star maps. High quality, monthly maps for Southern and Northern Skies, has lists of interesting objects. Requires Adobe Acrobat to print.
- Gordon Garradd's Astronomy Page
- Peter Enzerinks Astronomy page - Web based telescope/eyepiece calculator and other southern sky tidbits.
- Buying a telescope in Australia, lots of helpful hints.
- Anglo-Australian Observatory
- MSSSO - Mt Stromlo and Siding Springs Observatory
- ATNF - Australian Telescope National Facility
- Parks Radio telescope facility
- Spaceguard Australia the proposed search for Near Earth Objects including meteroids.
- Canberra Deep Space Communication Complex
- Star Class, Astronomy Education
- Information about Aboriginal astronomy.
- Australian weather forecasts
- Sky and Space, Australia's Astronomy magazine.
- Planetary Society, Australian Volunteers events diary.
- Australian Astronomy
Astronomy for Kids
- Adelaide Planetarium
- Canberra Planetarium and Observatory
- Launceston Planetarium
- Science Centre and Planetarium (Wollongong)
- Sir Thomas Brisbane Planetarium
- Perth Observatory and Planetarium
- Museum of Victoria Planetarium, Skynotes Index
- The Cosmos Centre in Charleville
- ABC Space for Kids, Games, information and more.
- Star Child NASA space information for kis 5-13.
- Interactive site on the Sun, good kids resources
- ABC Space for Kids, Games, information and more.
- Astronomy for Kids
- Astronomy for Kids (different site to the one above, and a bit simple, but lots of good images).
- Kids astronomy information from Astronomy Magazine
- SEDS, home of the Nine Planets Tour, and much much more
- The Planetary Society
- Center for Backyard Astrophysics
- Amateur Radio Telescopes
- International Occulation Timing Society
- Phil Plait's Bad Astronomy pages (very educational)
- SKY Online - Your Astronomy Source on the World Wide Web
- Astronomy Magazine
- Stellar distances
- Space Weather site (with Meteor counts)
- Near Earth Object home page (also follows comets, including LINEAR S4 and meteor showers)
- A 3D map of satellites orbiting the Earth in real time! Simply amazing!
- The Anglo Australian Observatories 3D virtual tour through a 3D map of the Cosmos. Mind Blowing!
- Views of extrasolar planets seen from the Southern sky, stunning Java-driven map with heaps of (complex) info.
- Stellarium, free (but large) photorealistic sky charting software. What I use for the horizon views.
- Celestia, free 3D space travel software, see the Earth from Mars, see the Moon of EL62, see Saturn rise on Titan.
- Ian's Celestia resources. Save these files into the "Extras" directory
- Script to show Conjunctions of Earth from Mars.
- Definition File for asteroid 87 Sylvia and her two moons (see story here).
- Definition File for Pluto's two new Moons P1 and P2.
- Definition file for three Neptunian extrasolar planets of HD 69830.
- Asteroid 2004 VD17, which will not hit the Earth.
- Definition file for Comet 2006/P1 McNaught
- Definition file for for the Gliese 581 system that contains the most Earth-like world yet.
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Charts, Books and Software for AstronomyIf you would like to have charts available all the time, rather than relying on mine, for between $2-$20 you can pick up a planisphere from a newsagent or bookshop (or for a bit more you can get fancy ones from Australian Geographic, the ABC shop or the other Australian Geographic look alike shop, or the Wilderness Society, or even a binocular/ optical store). The planisphere won't give you position of the planets, so you will need to get the planet rise/set times. These can be found in most serious newspapers (the Age, the Australian, SMH etc. The Australian is probably the best bet for budding amateurs). The combination of planisphere and rise/set times is the best value for beginners though, if you are not too worried about identifying star clusters in your binoculars.
Or, for $19.95 US, you can have the Touring the Universe through Binoculars Atlas http://www.philharrington.net/tuba.htm which can print observing charts, but has a few annoying quirks. These include having no horizon line, and the planets are shown in the wrong places.
I use a combination of a 1962 star chart, the Australian Astronomy 2013 almanac and SkyMap Pro 11.0 . I highly recommend the Australian Astronomy 2014 almanac. It is more helpful for planetary/comet/asteroidal observations and eclipses than for double stars, clusters galaxies etc, but is an excellent resource for Australian observers and anyone who would like to seriously follow the planets in Australia should have this almanac. It has easy to follow month-by-month summary information, as well as detailed charts, tables and whole sky maps. It is easily navigated. The Almanac is often in big bookstores or optical shops, or email firstname.lastname@example.org to purchase a copy directly for those outside major population centres. The Australian Astronomy almanac comes out in around November for the following year, and is now approx $28.
Sky and Telescope now also do an Australian version of their magazine.
For detailed chart drawing and timing of events, as well as satellite track predictions I feed the information from the almanac into the $150 AUD SkyMap Pro 11.0 , planetarium program. This is a very handy program which prints maps of every possible orientation and scale. The maps on this page are produced by SkyMap.
A shareware version of SkyMap that runs on windows 3.x, and win95 can be found here http://www.winsite.com/info/pc/win3/desktop/skymp21a.zip this is approximately 640 Kb zipped.
A shareware version of the win95 only version 5.0 is here http://www.download.net.au/cgi-bin/dl?13607
Other highly recommended Sky charting packages (win95/98/2000/XP sorry) are:
Cartes du Ciel at http://www.stargazing.net/astropc/ (FREE) a bit messy to install but very good.
Stellarium at http://stellarium.sourceforge.net/ (FREE) stunning photorealistic program, but requires a grunty PC.
TheSkyVarious packages from $49 US to $249 US
Stary Night various versions from $49 us for the basic pack (10 day trial of the basic pack at http://www.siennasoft.com/english/downloads.shtml) up.
Earth Centered Universe $88 AUD (shareware version at http://www.nova-astro.com/)
On the other hand a standard Sky Atlas for serious observing (much handier than carting a computer with you) such as Norton's Star Atlas can range from $35 to $90.
In these days of Handheld devices (smart phones and tablets), there is a plethora of sky charting apps you can take into the field with you. I use GoogleSky for android and a cut down version of Stellarium for iPad, my most used handheld app is Heavens Above for Android, for watching Iridium flares and ISS passes. This is one app that has changed my astronomical life. There are many more, many free or less than 1 AUD to dowload. Celestron has a great free planetarium app (although big at 154 Mb) for Android, iPhone and iPad, SkyPortal.
This is not meant to be a product endorsement of any kind (outside of the Australian Astronomy 2014 almanac. For any budding astronomers out there, it is fantastic value and no, I don't have any commercial interest in it, but I did win bronze in their website Olympics).
This page can be used freely for any non-commercial purpose but please attribute it correctly. However, see the disclaimer.
Ian with any suggestions
Created: Wednesday, 1 April 1998, 11:22:13 PM
Last Updated: Friday, 30 August 2014, 11:30:13 PM