Star Clusters (short exposure test).
Dec 23, 2012 23:14:12 #
Here is a sampling of Galactic Star Clusters, all with exposures of 15 to 20 seconds at ISO 1600 using a 72mm f/6 telescope and a Canon T2i camera. These are test exposures used to evaluate an instrument package I will be taking to Namibia, Africa in a couple of weeks.
M-37
NGC 457
NGC 7789
Dec 23, 2012 23:15:42 #
Dec 23, 2012 23:20:37 #
Nikonian72 wrote:
Outta my league! I am just gonna watch.
Thank you Nikonian72. I appreciate the compliment but still have a way to go.
Dec 24, 2012 09:52:36 #
you're good , really good ! I'd love to be outside doing that but weather at night turns cloudy . Good luck on your trip
Dec 24, 2012 11:57:24 #
sudzmonn wrote:
you're good , really good ! I'd love to be outside doing that but weather at night turns cloudy . Good luck on your trip
Thank you sudzmonn, the weather here has turned for the worse, it is now raining, yuk!
Dec 24, 2012 12:26:30 #
Here is a photo of the cluster Messier 35 with a more distant cluster NGC 2158. Now the interesting thing is that from the photograph we can see that most of the stars are blue in color while in NGC 2158 they are orange or reddish. The reason is that M 35 is only about 100 million years old whereas NGC 2158 is roughly 10 times older. These hot stars burn rapidly and become redder with age. The same holds true for the cluster NGC 7789 shown above (bottom photo of the three posted). It has an age approximately 1.6 billion years old and one can see the preponderance of old orange-reddish stars
M-35
Dec 26, 2012 01:26:29 #
They are all great pictures for such short exposures. Can't imagine the quality of outcome after longer exposures. Nice test Algol. I think you will be taking a great set up on your trip. Good luck and anticipating to see the beauties you'll bring back.
Dec 26, 2012 12:32:46 #
satcomsta wrote:
They are all great pictures for such short exposures. Can't imagine the quality of outcome after longer exposures. Nice test Algol. I think you will be taking a great set up on your trip. Good luck and anticipating to see the beauties you'll bring back.
Thank you, I'm awaiting the guide scope set up to arrive from Orion, when it gets here, hopefully I'll be able to master it in short time and start taking longer exposures. My goal is at least 5 minute exposures possibly 10.
Dec 31, 2012 01:10:39 #
With all due respect, perhaps the Astronomocal Photography Forum might generate a bit more response to and enthusiasm for your excellent work.
Dec 31, 2012 06:14:56 #
Mogul wrote:
With all due respect, perhaps the Astronomocal Photography Forum might generate a bit more response to and enthusiasm for your excellent work.
Thank you Mogul, I was at the forefront of the creation of this site and I do understand that it may take awhile before the forum gets a nice good following. It is relatively new so not many people know of it's existance. Maybe some other members know of a way to "get the word out" that the Astronomical Photography Forum is here.
Jan 1, 2013 01:21:41 #
Algol wrote:
quote=Mogul With all due respect, perhaps the Ast... (show quote)
My response was due either to a glitch in my iPad, Safari or I split the screen, because I thoughu I was viewing your posts in the Main Photography Discussion. I think this old beast (the iPad, not me) is ready for that great recycling center across the River Styx!
I'm still looking for an adapter to put a T-mount on my Lumix G3 so I can try it on my scope; I'd also like to find a Mac version of my interface mapping software. Maybe then, I'll get a chance to try some more Astro work.
Jan 1, 2013 07:15:01 #
I know what you mean, I have an 11 acre lake in my backyard and there has been numerous occasions that I have threatened, wanted etc to use my computer for a boat anchor.
Jan 1, 2013 14:26:28 #
Algol wrote:
I know what you mean, I have an 11 acre lake in my backyard and there has been numerous occasions that I have threatened, wanted etc to use my computer for a boat anchor.
The problem with an iPad is the lack of weight would make it impossible to anchor anything larger than a toothpick.
Jan 2, 2013 18:06:16 #
Lovely work. Was this with or without tracking? It looks as if you have minimal light pollution. Well done.
Jan 2, 2013 21:29:28 #
Straight Shooter wrote:
Lovely work. Was this with or without tracking? It looks as if you have minimal light pollution. Well done.
Thank you for the kind words. Beleive it or not, I am only 30 miles from Atlanta and the sky is lousy. Milky Way seen on a good clear night with difficulty. I used some fancy filed flattening techniques to arrive at the dark background on my star cluster shots. It would be difficult if not impossible to do nebula with this method, would have to go to Light Pollution Filters. Also these were taken on a Celestron CG-5 mount and set to tracking the stars. I have since added an Orion Starshott Autoguider with 80mm guidescope and this will extend my exposure times greatly.
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