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Old 24-08-2008, 09:16 AM
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multiweb (Marc)
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M17 - cropped

8x4min - QHY8 - Autoguided with ED80/PHD on G11 - Celestron 5" Newtonian. Seeing was reasonably good but the air unusually warm and humid. Bit hazy. Cropped to fit under 200k. I had planned the night to have more subs and longer exposures to complement but I had to stop momentarily to do a meridian flip. When I got back on tracking I blew a fuse (litteraly) and had to pack up as I was on the field with no spares. Something new to add to my check list. Hope you like it. Thanks for looking.
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Old 24-08-2008, 10:17 AM
jase (Jason)
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Marc, there is some lovely detail present in this image, though I feel your colour balance needs some tweaks. The red channel dominates the image (seen in the attachments - PS histogram). I've highlighted the "whitespace" with a red transparent block for reference. If you raise the red channel black point to around ~27 points, I think you'll notice an improvement. Perhaps also tweak the blue a little. Overall, a great image. Thanks for sharing.
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Old 24-08-2008, 10:29 AM
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RB (Andrew)
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Shame about the fuse Marc, what a shame.
Agree with Jase, it's a great image overall and some very nice detail hidden in there.
If you tweak the channels like he suggests you'll have a cracker image.

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Old 24-08-2008, 02:51 PM
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multiweb (Marc)
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Quote:
Originally Posted by RB View Post
Shame about the fuse Marc, what a shame.
Yep... as the saying goes when it rains it pours. Here's the last sub of the series. A picture's worth a thousand words


Quote:
Originally Posted by jase View Post
Marc, there is some lovely detail present in this image, though I feel your colour balance needs some tweaks. The red channel dominates the image (seen in the attachments - PS histogram). I've highlighted the "whitespace" with a red transparent block for reference. If you raise the red channel black point to around ~27 points, I think you'll notice an improvement. Perhaps also tweak the blue a little. Overall, a great image. Thanks for sharing.
Thanks for the tips Jase. Glad you like it. I'll spend some more time reprocessing it.
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  #5  
Old 24-08-2008, 05:14 PM
beren
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Very nice Mark heaps of detail makes me eager to go further afield as well.....actually that last sub looks cool
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  #6  
Old 25-08-2008, 10:20 PM
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winensky
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Lovely image. Pity about the fuse and unfortunately, the field isn't the only place where a fault can shut you down!
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  #7  
Old 25-08-2008, 10:30 PM
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strongmanmike (Michael)
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Quote:
Here's the last sub of the series. A picture's worth a thousand words
That last sub is APOD material for sure, send it in, I recon they may be interested?

The completed image is pretty good too

Mike
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Old 25-08-2008, 11:48 PM
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multiweb (Marc)
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Thanks for the comments guys. Here's the full field at http://www.multiweb.com.au/astro/M17.jpg . Bit more details but my star shapes are still distorded the wider I get. Still some figuring out to do with my field flattening and collimation.
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