Thursday, January 31, 2008
Comet Holmes in STEREO
Comet Holmes is currently in the field of view of the H2A camera of STEREO (see the animation I made above, hat tip to Comet Al) . Amazingly Comet Holmes can still be seen all this time after the original outburst. Here is a lovely image by Rainer Kracht. Here is a local chart for Southern Hemisphere viewers (binoculars only, and best chance of seeing it is north of Canberra.)
Labels: comets, Stereo Satellite
Wednesday, January 30, 2008
February 2008 Southern Skywatch is now up
The February Southern Skywatch is now up. There are various planetary hijinks, an occultation of Antares and a partial Solar eclipse. As well, comet Tuttle and and the energizer of the comet world Holmes, are still visible.
February is an exciting month, but you have to be up early in the morning to see most of it.
Labels: Observational Astronomy, southern skywatch
Tuesday, January 29, 2008
Venus and Jupiter pair up
If you are up to getting up before sunrise over the next few days, Venus and Jupiter will be an awesome sight in the predawn twilight. Venus and Jupiter are closest on February 2, but their dance over the next few days will be delightful.
Venus will be doing a lot of interesting planetray meetings in the next month, so getting up early will be less of a chore.
Labels: Jupiter, Observational Astronomy, Venus
Friday, January 25, 2008
The Open Laboratory in Nature!
Labels: blogs, Open Laboratory
The 38th Carnival of Space is on the Case
Labels: carnival of space
Thursday, January 24, 2008
Happy 4th Anniversary Opportunity!
Tuesday, January 22, 2008
Robot Square Dance
One of the things keeping me from astronomy and blogging has been family events (and friends dropping over, and we will not mention 3 cornered jacks or disintegrating chain breakers). The eldest two boys have been to The Double Helix Club, programming Lego robots. It's not sophisticated, but the boys figured out how to program the robot to go in a square. The video shows their robot doing just that. Nothing profound, but I am proud of my boys problem solving abilities.
Occultation of Regulus January 24-25th
On the late evening of January 24 to the early morning of January 25 the Moon will pass in front of Regulus as seen from Australia and New Zealand. New Zealand sees it at around 4:00 am, most of the east coast Australia sees the occultation around 1 am on the 25th, Adelaide at just past midnight and WA around 9:30 pm on the 24th. For exact contact times for all the major capital cities see this table.
The occulatation is a fairly good one, with the Moon reasonably high in the sky, and can be followed with the unaided eye, binoculars
or telescopes. The only drawback is the time. Still if you are up late watching TV, pop out and watch this celestial gem.
Labels: Observational Astronomy, Occultation
Monday, January 21, 2008
Southern Skywatch January 2008 is up
Labels: southern skywatch
Tuesday, January 15, 2008
A little light housekeeping, again
The Open Laboratory 2007 is here!
Why buy the dead tree version when you can read the online versions for free? Well, there is just something nice about holding a real book, and reading online on the beach is well, just not right. As well, it's nice to have all these essays in one handy volume. And it supports Science Blogging, proceeds go to supporting the Science Blogging conference, so it is in a good cause.
My contributions are all biological, but I will try and get some astronomy in next year.
Labels: Open Laboratory, Science Blogging
Monday, January 14, 2008
My 2007 highlights
Comet McNaught: Highlight of the year and one of the top five astronomical events of my life (a total solar eclipse, the transit of Venus, the Leonid meteor storm and the transits of Mercury are all there as well)
Nova Scorpii: A bright (well magnitude 5.5) unexpected nova, very nice.
Gliese 581c & d "Earth-like" extrasolar worlds that may be in their stars habitable zone. Was that exciting or what?
The total Lunar eclipse: Just really, really beautiful.
Comet 17P: An amazing outburst that just kept on. People can still see it with the unaided eye.
And there were giant sunspots, and STEREO comets and great ISS passes. All in all a wonderful year
Sunday, January 13, 2008
Comets 8P Tuttle and 17P Holmes
The comet is much higher in the northern sky than it was a while ago, and people in the northern half of Australia with dark skies should see it with binoculars. However, here in Adelaide even the arkly sparkly 10x50 binoculars my beloved family got me for Christmas can't make it out. 17P is currently close to beta Persii (Algol), and should be easy to pick up under dark skies (see the chart for location, it's set for 10:00 pm local time, facing north, for a printable chart, click here).
Also in the sky, and much easier to see in binoculars, is 8P Tuttle, it is at the threshold of visibility to the unaided eye under dark skies. Here in suburban Adelaide I picked it up in my shiny new binoculars with no hassle at all. It's sort of a fuzzy blob to me, a bit like a globular cluster. It's almost due west (it looks a bit weird in the chart above as it is centred on north, but it gives you an idea of where it is near the stars. It may be more difficult in the coming days as the comet fades and the Moon waxes, but it's a nice way to start the year with a comet and Mars.
Labels: comets, Observational Astronomy