Hi to all Here's the first image for quite a while - a Horsehead done on Sunday night. I haven't done this one since the ST-6 days. Given the relatively ...
Steve Crouch
stevec@...
Jan 2, 2005 7:33 pm
3120
... Steve, You've understated as usual. It's a very nice image! For comparison, you can see it in this image too, taken with a 50mm lens + DSLR by Terry...
Thanks Vello. What I meant by the quick and dirty label is that you obviously don't have to go really deep to get a good horsehead picture. I think the...
Steve Crouch
stevec@...
Jan 3, 2005 4:03 am
3122
A question for the astrophotography gurus... Images of the Orion nebula always show it as being a very red object. However to my eyes it is visually a green...
Dave The conventional explanation as I understand it is that you have two sets of receptors on your retina - rods and cones. One is good for determining ...
Steve Crouch
stevec@...
Jan 4, 2005 12:06 am
3124
... In addition, the O III lines (which are responsible for the greenish colour seen visually) happen to fall exactly in the trough between the response curves...
Joe Elso
Joe.Elso@...
Jan 4, 2005 1:34 am
3125
Hi to all While waiting for the sky to clear again, I had another go at processing the Horsehead image of a few days ago. I think that this version has better...
Steve Crouch
stevec@...
Jan 5, 2005 6:39 am
3126
With Saturn, Jupiter, Mars, Mercury and Venus all up at the crack of dawn, it behoves us to follow suit. And don't forget that other planet, the Moon. Ares...
... Yeah. I had a look at 5am a few days ago but at that stage Mercury and Venus were too low to be seen from my backyard :-( Comet Machholz has a nice tail...
I had a look at the eastern sky this morning. Mars and Antares (the anti mars) were close together (5 deg) and similar in brightness (although not as close as...
Morland, John
jmorland@...
Jan 6, 2005 11:22 pm
3131
There will be a deep sky night this month. The weather will be clear and mild, and the transparency of the sky will be better than usual owing to recent rain. ...
Hi to all Here's last night's effort. One of the first I've ever done using hydrogen alpha for the luminance layer. Normally it's a real struggle to find a ...
Steve Crouch
stevec@...
Jan 7, 2005 1:45 am
3133
Scientific American's magazine, "The secret lives of stars", is on sale in newsagents (Dickson, anyway) for $11.95. Worth the price, in my opinion. In the Feb...
http://fusedweb.pppl.gov/CPEP/Chart_Pages/5.Plasmas/Nebula.html will tell you about nebulae, including hinting at why emission nebula M42 is seen as green, but...
Ummmm, note that there wil be some maintenance work carried out on the CAS 14" next meeting - about an hours worth (assuming no problems) or does someone with...
Gerry Kellock & I attempted the 1403 Idelsonia event last Wednesday from near Bredbo, and Cooma, and Albert Brakel observed from Downer. We all could see the...
Many will be aware of the growing use of low-light video cameras in Astronomy. The most popular camera in the US is the PC-164C, which costs about US$120....
Physics in action.... ... Take a look at the following for a wonderful demonstration of the centre-of-mass principle. http://www.physics.usyd.edu.au/~nigel/com...
If the weather is clear tonight, a convoy to Denver's will leave the Shell service station near EPIC at 8 p.m. Might be a bit of summernats traffic about, so...
... The sky over Downer just now is cloudy in the west, with a big clear patch in the east. I suspect the wind will continue from the SE or even east, so I've...
Anyone interested in an AP1200 mount without having to wait two years in the queue? ... Subject: 1200GTO German Equatorial Mount Date: Sun, 09 Jan 2005...
... John, It was nice and clear at Denver's. This is what you missed... http://www.astrostudio.at/Astrofotos/aufnahme.php?a_id=347&page=1&kategorie=&k_id=39 ...
This looks like an interesting activity for next week.... Dave ... From: David Dunham To: IOTAoccultations@yahoogroups.com Sent: Sunday, January 09, 2005 8:33...
... *^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^ Kim Rawlings School Administration Research School of Chemistry The Australian National University Email:...
Kimberley Rawlings
kim@...
Jan 11, 2005 1:12 am
3147
Hi to All Here's another object I haven't imaged since the ST-6 days. It's reasonably faint so it requires a bit more exposure than I gave it. The main fault...
Steve Crouch
stevec@...
Jan 11, 2005 11:28 pm
3148
Hi, I managed to photograph a thin lunar crescent setting over the Brindabellas last night. It was around 22.9 hours old so it was a pretty easy target,...
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