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Old 30th of March 2012 (Fri)   #1
scorpio1155
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Default Great Nebula taken with DSLR

Hello... This photo of the Great Nebula in Orion's sword (Theta Orionis) was obtained with my 300mm f/8 William Optics refractor riding piggy-back on my 12-inch Meade LX200. It was my usual formula of 12, five-minute subexposures aligned and stacked. Camera control, and some processing was done using Images Plus. By the way, the effective focal length of the system was 480mm thanks to the 1.6 crop factor of my 500D.
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Old 30th of March 2012 (Fri)   #2
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Default Re: Great Nebula taken with DSLR

Wow! thats amazing....
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Old 30th of March 2012 (Fri)   #3
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Default Re: Great Nebula taken with DSLR

Are you taking Darks and Flats to use with Deep Sky Stacker?
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Old 31st of March 2012 (Sat)   #4
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Default Re: Great Nebula taken with DSLR

your processing gives alot of color noise and oversaturation
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Old 31st of March 2012 (Sat)   #5
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Default Re: Great Nebula taken with DSLR

Got alot of detail . Since you have Image Editing OK i worked on the noise some in Cs5 . If you don't like it let me know and i'll remove it .

Last edited by Celestron : 11th of June 2012 (Mon) at 15:36.
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Old 2nd of April 2012 (Mon)   #6
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Default Re: Great Nebula taken with DSLR

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Originally Posted by Celestron View Post
Got alot of detail . Since you have Image Editing OK i worked on the noise some in Cs5 . If you don't like it let me know and i'll remove it .
No, no, please leave it. I like it better than my processing. I still think that some of my biggest challenges are the blue halos around bright stars. Thank you for offering your version!
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Old 2nd of April 2012 (Mon)   #7
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Default Re: Great Nebula taken with DSLR

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Are you taking Darks and Flats to use with Deep Sky Stacker?

Darks yes, flats no... I haven't quite figured out how to do them effectively yet. I have a white board that I illuminate and shoot when gathering flats for the ST-7XME (when shooting a focal length of 1524mm), but the board isn't big enough to use with the 480mm (300mm with 1.6 crop factor) coupled to the DSLR.... Hmmm....
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Old 2nd of April 2012 (Mon)   #8
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Default Re: Great Nebula taken with DSLR

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Got alot of detail . Since you have Image Editing OK i worked on the noise some in Cs5 . If you don't like it let me know and i'll remove it .
Can I send you some of my pictures!!?!!? just kidding that is great, I wouldn't have thought that was possible.
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Old 2nd of April 2012 (Mon)   #9
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Default Re: Great Nebula taken with DSLR

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Originally Posted by scorpio1155 View Post
... my biggest challenges are the blue halos around bright stars. Thank you for offering your version!
You can help that with a Minus Violet Filter in refractors . Check these out by Lumicon but i'm sure there are other brands .

http://www.lumicon.com/telescope-acc...Violet+Filters
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Old 2nd of April 2012 (Mon)   #10
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I wouldn't have thought that was possible.
I use Topaz DeNoise but some others use LR3 but it's a bit more complicated .
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Old 2nd of April 2012 (Mon)   #11
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Default Re: Great Nebula taken with DSLR

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Originally Posted by Celestron View Post
I use Topaz DeNoise but some others use LR3 but it's a bit more complicated .
Thanks, I think I'll give that a try!
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Old 3rd of April 2012 (Tue)   #12
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Default Re: Great Nebula taken with DSLR

Nice work ... both of you!!!
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Old 3rd of April 2012 (Tue)   #13
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Default Re: Great Nebula taken with DSLR

Processing is as important as the shots themselves. I never thought there would be so much involved AFTER the shot is taken...............Nice one by the way.
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Old 3rd of April 2012 (Tue)   #14
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Default Re: Great Nebula taken with DSLR

Pretty cool!
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Old 3rd of April 2012 (Tue)   #15
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Default Re: Great Nebula taken with DSLR

Quote:
Originally Posted by scorpio1155 View Post
Darks yes, flats no... I haven't quite figured out how to do them effectively yet. I have a white board that I illuminate and shoot when gathering flats for the ST-7XME (when shooting a focal length of 1524mm), but the board isn't big enough to use with the 480mm (300mm with 1.6 crop factor) coupled to the DSLR.... Hmmm....
For Flats just shoot the sky when it's clear. I usually take 50-60 which gives me a nice even master flat. It does not matter that the sky is blue, you just don't want clouds passing by.
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