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Astrophotography and Sketching >> Beginning and Intermediate Imaging

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zerro1
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Reged: 08/02/09

Loc: Smokey Point , 48.12°N 122.25...
Re-Process , M17, Ha, 6303E
      #5861300 - 05/15/13 12:39 AM Attachment (13 downloads)

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

Edited by zerro1 (05/15/13 12:50 AM)


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DarkStarAstro
scholastic sledgehammer
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Reged: 02/22/13

Loc: Southeastern US
Re: Re-Process , M17, Ha, 6303E new [Re: zerro1]
      #5861439 - 05/15/13 03:25 AM

Beautiful detail!

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SGT500
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Re: Re-Process , M17, Ha, 6303E new [Re: DarkStarAstro]
      #5861691 - 05/15/13 09:01 AM

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

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shawnhar
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Reged: 06/25/10

Loc: Knoxville, TN
Re: Re-Process , M17, Ha, 6303E new [Re: SGT500]
      #5862011 - 05/15/13 12:04 PM

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

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zerro1
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Reged: 08/02/09

Loc: Smokey Point , 48.12°N 122.25...
Re: Re-Process , M17, Ha, 6303E new [Re: shawnhar]
      #5863030 - 05/15/13 07:53 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!


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SGT500
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Re: Re-Process , M17, Ha, 6303E new [Re: zerro1]
      #5863073 - 05/15/13 08:02 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.


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zerro1
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Loc: Smokey Point , 48.12°N 122.25...
Re: Re-Process , M17, Ha, 6303E new [Re: SGT500]
      #5863105 - 05/15/13 08:09 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.

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SGT500
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Re: Re-Process , M17, Ha, 6303E new [Re: zerro1]
      #5863130 - 05/15/13 08:16 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

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zerro1
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Reged: 08/02/09

Loc: Smokey Point , 48.12°N 122.25...
Re: Re-Process , M17, Ha, 6303E new [Re: SGT500]
      #5863148 - 05/15/13 08:29 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..

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rigel123
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Re: Re-Process , M17, Ha, 6303E new [Re: zerro1]
      #5863301 - 05/15/13 10:07 PM

That looks really great Robert, details are very sharp.

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zerro1
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Loc: Smokey Point , 48.12°N 122.25...
Re: Re-Process , M17, Ha, 6303E new [Re: rigel123]
      #5863459 - 05/15/13 11:11 PM

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

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CounterWeight
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Re: Re-Process , M17, Ha, 6303E new [Re: zerro1]
      #5864428 - 05/16/13 12:41 PM

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.

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zerro1
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Loc: Smokey Point , 48.12°N 122.25...
Re: Re-Process , M17, Ha, 6303E new [Re: CounterWeight]
      #5865871 - 05/16/13 09:06 PM

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

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SGT500
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Re: Re-Process , M17, Ha, 6303E new [Re: zerro1]
      #5865874 - 05/16/13 09:07 PM

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

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zerro1
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Reged: 08/02/09

Loc: Smokey Point , 48.12°N 122.25...
Re: Re-Process , M17, Ha, 6303E new [Re: SGT500]
      #5869652 - 05/18/13 04:10 PM Attachment (3 downloads)

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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