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Deep sky exposures

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Deep sky exposures

Postby Big V on Sun Dec 17, 2006 2:37 pm

Well the sky did not put on its predicted light show last night, so I decided to taks some really long exposures through the telescope and stack them to produce these. I was using 30 minute exposures, combined with some 15's and 10 minutes with a couple of really short ones as well. Canon 30D, 800 ISO and hung it off a 20 inch scope..No dark frames or bias/flats taken, just straight out of the camera and stacked together. This was the first go at astronomical shots with the new camera and I am happy with the results, less noise than the 300D that I also use..
enjoy the night sky..
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Postby Marvin on Sun Dec 17, 2006 2:44 pm

That first one is a corker Virgs!
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Postby Big V on Sun Dec 17, 2006 2:52 pm

Thanks Lee, it is a very bright object compared to the other 2, so the colours show up alot better. The last one is frustratingly hard to see visually, need perfect conditions, so just glad it showed up. The galaxy pic was taken to help out one of the members, he wanted proof that he was seeing the arms..
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Postby fozzie on Sun Dec 17, 2006 3:18 pm

Virgs - the first one is absolutely surperb, colours are fantastics, print it :)
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Postby mic on Sun Dec 17, 2006 9:08 pm

Great stuff !

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Postby Big V on Sun Dec 17, 2006 11:32 pm

Fozzie, have done..looks almost 3d in glossy colour!!!
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Postby blacknstormy on Mon Dec 18, 2006 12:59 am

They look fantastic - and I agree wholeheartedly regarding the 1st one - WOW !!!!
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Postby Alpha_7 on Mon Dec 18, 2006 10:19 am

Goregous stuff, and I'm glad you happy with your new kit, it certainly is delivering the goods here.
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Postby Grev on Mon Dec 18, 2006 10:44 am

I like them. Although some of the noise ruins it but still, great insight.
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Postby Big V on Mon Dec 18, 2006 12:51 pm

Grev, yes the noise is an issue but I am pushing the envelope here, 30 minute exposures at low light gathering is not something these baby's are designed for. A chilled camera is required to get rid of the noise but they costs 7 grand plus and you need a dedicted power supply and computer to make them work.. I will take some dark frames when I get some time and then do a subtraction which will help reduce the noise..Still very happy with the overall result given the paramaters that they were taken under..
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Postby lukeo on Mon Dec 18, 2006 6:15 pm

Don't be making excuses for those images, they are simply stunning. I am glad you posted them up!
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Postby SteveGriffin on Tue Dec 19, 2006 9:36 pm

What sort of tracking system are you using on the scope?? Nice work
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Postby Big V on Tue Dec 19, 2006 11:14 pm

Thanks, Steve, the scope uses stepper motors and a worm drive to track the stars across the sky..
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