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Re-Process , M17, Ha, 6303E

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#1 zerro1

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Posted 14 May 2013 - 11:39 PM

From a trip to Winthrop. had a couple bad columns showing so re-stacked and started over after running Fixfits. I think I pulled a little more detail.
AT6RC
KAF6303E RS Quantix
Baader 7nm H-a filter
LXD75 Mount
14 X 5 minutes

1200 X 800

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#2 LazyLightning

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Posted 15 May 2013 - 02:25 AM

Beautiful detail!

#3 SGT500

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Posted 15 May 2013 - 08:01 AM

Looks really nice Robert!!! Very smooth. That camera/scope combo gives a great FOV

#4 shawnhar

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Posted 15 May 2013 - 11:04 AM

Very nice! I could live without color if my pics looked like that!

#5 zerro1

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Posted 15 May 2013 - 06:53 PM

Thank You Chris, Sal, and Shawn.

Sal, that was without a reducer/flattener. I want to give it a shot on my SCT @ f/10, I'm thinking M27... the outer nebulosity!

#6 SGT500

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Posted 15 May 2013 - 07:02 PM

You should be able to get it nicely with that sensitive camera! Just use long exposures and plenty of subs.
I just tried the Ring nebula outer nebulosity in Ha last night. Showed up nicely in individual 15min subexposures.

#7 zerro1

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Posted 15 May 2013 - 07:09 PM

With no really bright stars in the field, 10 minute subs are fine. Maybe if I dropped the gain down to 1, I could get away with much longer subs. This was at gain = 2. Early on I shot some things at gain = 3, but it's almost rediculously sensitive up there.

#8 SGT500

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Posted 15 May 2013 - 07:16 PM

whats wrong if there are bright stars? Blooming? if so take two sets of subs at different camera angles and do a median combine. The blooms will disappear completely and you will be able to use the full sensitivity of the camera

#9 zerro1

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Posted 15 May 2013 - 07:29 PM

it's a little complex with this camera config to rotate. I'm working on getting a more user friendly version built by QHY using my "extra 6303E" sensor. It will be much MUCH easier to do that in a smaller package and less thumb sized cables cluttering things up.. :grin:

#10 rigel123

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Posted 15 May 2013 - 09:07 PM

That looks really great Robert, details are very sharp.

#11 zerro1

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Posted 15 May 2013 - 10:11 PM

Thanks Warren... Hope I get a chance to get some color before too long :cloudy:

#12 CounterWeight

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Posted 16 May 2013 - 11:41 AM

Really nice! That central region can be tricky to balance in the processing and you did a great job of it. Love the filament detail too.

#13 zerro1

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Posted 16 May 2013 - 08:06 PM

Thank You Jim! It does start to blow out in the central band, I used a layer mask to blend it back in.

#14 SGT500

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Posted 16 May 2013 - 08:07 PM

Yes M17 is deceptively difficult to process. I struggled with my version quite a bit.

#15 zerro1

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Posted 18 May 2013 - 03:10 PM

it's not looking like I'll get another shot for a month. So reaching back to 2011, I found some color data to combine with the H-a.

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