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FORUMS Photo Sharing & Visual Enjoyment Astronomy & Celestial
Thread started 28 Apr 2012 (Saturday) 21:06
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M104 The Sombrero Galaxy

 
NovaTJ
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Apr 28, 2012 21:06 |  #1

I know this image is not near as nice as Megrac's from a couple days ago, but decided to post it anyway. The ED80 just doesn't have the light gathering of a medium size reflector. One hour 21 minutes of lights at 3 minute exposure, 40 darks, and forty flats. No bias or dark flats were used in the processing as they tended to create lines in the background. Comments good or bad are welcome.....Greg

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Astro-Tech 8" f/4 imaging Newtonian,Baader MPCC,Orion ED 80 APO F7.5,Skywatcher EQ-6 Pro,ASGT, Modified Canon 50D, Meade DSI Guide Camera, 8" SCT dovetail mounted relic, Criterion Dynascope RV-6, modified 300D, custom astro shed,and still just getting started!

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SteveInNZ
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Apr 28, 2012 21:57 |  #2

I think that M104 is one of those things that we've seen so many good images of that we forget how small and difficult it is.
Your image desperately needs a color balance adjustment.


"Treat every photon with respect" - David Malin.

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megrac
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Apr 29, 2012 00:03 |  #3

Yes it is a very tricky one.


60D | Canon 15-85 | Canon 200mm f/2.8L II | Canon 400mm f/5.6L | 580EX II. And a heap of Astrophotography gear.

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NovaTJ
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Apr 29, 2012 08:56 |  #4

SteveInNZ wrote in post #14345812 (external link)
I think that M104 is one of those things that we've seen so many good images of that we forget how small and difficult it is.
Your image desperately needs a color balance adjustment.

Thanks Steve, here is what I had to work with. Perhaps I need to not balance, but reduce the green?

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Astro-Tech 8" f/4 imaging Newtonian,Baader MPCC,Orion ED 80 APO F7.5,Skywatcher EQ-6 Pro,ASGT, Modified Canon 50D, Meade DSI Guide Camera, 8" SCT dovetail mounted relic, Criterion Dynascope RV-6, modified 300D, custom astro shed,and still just getting started!

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NovaTJ
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Apr 29, 2012 09:03 |  #5

megrac wrote in post #14346244external link
Yes it is a very tricky one.

Tell me about it! This image is one of maybe a dozen attempts to get close to what I wanted. Reprocessed the stack in DSS several different ways trying 2x drizzle and 3x drizzle, bias or no bias, added 14 more darks, tried selecting only the best lights for the stack. Tricky is an understatement Raymond...:)

Greg


Astro-Tech 8" f/4 imaging Newtonian,Baader MPCC,Orion ED 80 APO F7.5,Skywatcher EQ-6 Pro,ASGT, Modified Canon 50D, Meade DSI Guide Camera, 8" SCT dovetail mounted relic, Criterion Dynascope RV-6, modified 300D, custom astro shed,and still just getting started!

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MidnightSun
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May 03, 2012 19:25 |  #6

Looks pretty good just the same......


Dave
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NovaTJ
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May 04, 2012 20:06 |  #7

MidnightSun wrote in post #14375622external link
Looks pretty good just the same......

Thanks!


Astro-Tech 8" f/4 imaging Newtonian,Baader MPCC,Orion ED 80 APO F7.5,Skywatcher EQ-6 Pro,ASGT, Modified Canon 50D, Meade DSI Guide Camera, 8" SCT dovetail mounted relic, Criterion Dynascope RV-6, modified 300D, custom astro shed,and still just getting started!

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M104 The Sombrero Galaxy
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