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Old 19-11-2020, 09:06 AM
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PKay (Peter)
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NGC1531 - Interacting galaxy

Quite small at 3' X 1.4'
Magnitude 13.11 (photometric system: B)
Surface brightness 14.54 mag/arcmin^2

5 hours of 5min subs.
Cropped due to frame misalignment.

Hints and encouragement always greatly received :-)
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Old 19-11-2020, 09:16 AM
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xa-coupe (Jeff)
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Nice work...



one hint - post more like this.
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Old 19-11-2020, 10:30 AM
Startrek (Martin)
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Peter
Super image of a tiny faint fuzzy and with only a 6” aperture and 1050mm fl scope too
Well done !!
5 hours , must have been a late one
Do you dither your images now ?
Martin
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Old 19-11-2020, 11:57 AM
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PKay (Peter)
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Thanks Jeff, will try my hardest...

Hi Martin
Yes I am using a dither before each frame.
It certainly seems to help and thanks muchly for the tip!

Last night was exceptional conditions.
Aside from a cable snag during the flip and a severe lack of sleep all went well.
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Old 20-11-2020, 07:46 AM
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Sunfish (Ray)
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An interesting target and detailed image. Quite an achievement.
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  #6  
Old 20-11-2020, 12:18 PM
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I can feel the chaos of stars and planets being ripped apart :-)

nice one Peter!
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Old 21-11-2020, 06:43 AM
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PKay (Peter)
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Thanks Ray
It takes quite a bit of time to bring these to life.

Thanks Robert.
I could imagine it is quite a slow process and wonder what it looks like now, 42 million years later...
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Old 21-11-2020, 09:33 AM
jahnpahwa (JP)
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Looks unreal, Pkay, the sharpness is awesome!
Did you give it the ol' SCNR kill green in pixinsight? To me, this might improve the image and possibly bring even more detail
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Old 21-11-2020, 09:47 AM
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Anth10 (Anthony M)
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Pkay,
Your endeavour is really paying off, your work flow and setup is producing nice Astro images - a credit to you , keep it up well done. This is a beauty.
Anth
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Old 21-11-2020, 05:15 PM
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Really nice capture and great to see your continual improvement.
Alex
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  #11  
Old 21-11-2020, 09:21 PM
Zuts
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A very nice galaxy, amazing that you can get such detail with a 6 inch newt.
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  #12  
Old 22-11-2020, 08:30 AM
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PKay (Peter)
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Thanks JP, Anth, Alex & Paul.

I really get a kick out of capturing these small galaxies.

Will soon have a Ha filter so might be adding new data to the RGB images.
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Old 22-11-2020, 11:18 AM
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Anth10 (Anthony M)
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It will be a new challenge Pkay that’s for sure- I’ve got one coming via the mail on Monday after all these years-(I’m like a snail in this hobby) so I’m looking forward to trying HaRGB imaging with the modded DSLR too.
Look forward to seeing how you fair with it-
I’m busy collimating and adjusting the newt to get back into dso imaging since it’s been ages since my last capture.
All the best.
Anth
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Old 22-11-2020, 11:51 AM
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Quote:
Originally Posted by Zuts View Post
A very nice galaxy, amazing that you can get such detail with a 6 inch newt.
Pretty darn good I would say as it is only a six inch triplet not a six inch Newtonian
Alex
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  #15  
Old 22-11-2020, 11:52 PM
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rustigsmed (Russell)
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nice work peter you have some good detail here.

in terms of some hints;
the image is black clipped in all channels.
might be worth cropping it in portrait to escape the gradient to the top right - can work pretty well with the star to the right too.
the galaxy can handle some selective sharpening which will make the dust pop a bit more if you were inclined to do so.

cheers

russ
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  #16  
Old 23-11-2020, 06:49 AM
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PKay (Peter)
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Thanks for the tips Russ.

I did notice the gradient, but it was a choice of keeping the bottom right galaxy, or chopping it out.

Never tried selectively stretching the RBG channels.
I will give it a go.

Also will look at deconvolution again.
It has always been a image wrecker for me :-)

Thanks once again.
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