AP Processing Challenge 17 M97 The Owl Nebula- Gordon

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Larry 1969 United States of America
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Re: AP Processing Challenge 17 M97 The Owl Nebula- Gordon

#21

Post by Larry 1969 »


Thanks for the data Gordon!
I ran this through StarTools and I also found using the "Uncalib-1" preset in the wipe module seemed to work well...
I have been finding this to be true for my less than perfect data (ie: full moon or other weirdness going on)...
I also tried to bring out the eyes of the owl without completely losing the red in the outer shell...

Larry
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Challenge No 17-Gordon-M97 Owl.jpg
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Re: AP Processing Challenge 17 M97 The Owl Nebula- Gordon

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Post by STEVE333 »


Larry 1969 wrote: Mon May 24, 2021 1:09 am Thanks for the data Gordon!
I ran this through StarTools and I also found using the "Uncalib-1" preset in the wipe module seemed to work well...
I have been finding this to be true for my less than perfect data (ie: full moon or other weirdness going on)...
I also tried to bring out the eyes of the owl without completely losing the red in the outer shell...

Larry
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Very nice job Larry.

Steve
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Re: AP Processing Challenge 17 M97 The Owl Nebula- Gordon

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Post by Jockinireland »


Larry 1969 wrote: Mon May 24, 2021 1:09 am Thanks for the data Gordon!
I ran this through StarTools and I also found using the "Uncalib-1" preset in the wipe module seemed to work well...
I have been finding this to be true for my less than perfect data (ie: full moon or other weirdness going on)...
I also tried to bring out the eyes of the owl without completely losing the red in the outer shell...

Larry
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Thats really excellent Larry, you have so much structure in the centre and also the outer area is showing so much red. Good Job!
Scope: Skywatcher Evostar 80ED (SW 0.85 FR/FF) on a SW NEQ6Pro
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Re: AP Processing Challenge 17 M97 The Owl Nebula- Gordon

#24

Post by Gordon »


I'm really impressed with the quality of the processing I'm seeing. I enjoy seeing the different 'look' that each of you are sharing!!!
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Re: AP Processing Challenge 17 M97 The Owl Nebula- Gordon

#25

Post by Graeme1858 »


Here's a better attempt than my last one! I used Colour Balance rather than colour selective curves stretch to get the colours right.

Challenge No 17-Gordon-M97 Owl-01.jpg

The background needs darkening but I lose the nebula so a mask would be in order. Also the .jpg looks a lot worse on this laptop than it did when I processed it!

Regards

Graeme
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Re: AP Processing Challenge 17 M97 The Owl Nebula- Gordon

#26

Post by Gordon »


Gimp is a little tough to master @Graeme1858 . You've got a good start!
Gordon
Scopes: Explore Scientific ED80CF, Skywatcher 200 Quattro Imaging Newt, SeeStar S50 for EAA.
Mounts: Orion Atlas EQ-g mount & Skywatcher EQ5 Pro.
ZWO mini guider.
Image cameras: ZWO ASI1600 MM Cool, ZWO ASI533mc-Pro, ZWO ASI174mm-C (for use with my Quark chromosphere), ZWO ASI120MC
Filters: LRGB, Ha 7nm, O-III 7nm, S-II 7nm
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Re: AP Processing Challenge 17 M97 The Owl Nebula- Gordon

#27

Post by Ruud »


You know, @Graeme1858, the large view has too much noise, but the preview looks quite nice, especially with the ambience created by the yellow mist above the owl.

I tried GIMP myself on earlier challenges. GIMP is powerful but also unforgiving for mistakes and I make lots of those.

I think GIMP may soon be fitted out with adjustment layers. These will make a big difference, and the tools in G'MIC are awesome for suppressing noise and bringing out detail.

For my first attempt on this one I tried darktable (after making a 16 bit Tiff in Fitswork). I clearly need more experience with darktable. Soon, I hope, I'll come up with something presentable prepared entirely with freeware.
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Re: AP Processing Challenge 17 M97 The Owl Nebula- Gordon

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Post by Jockinireland »


Gordon wrote: Tue May 25, 2021 4:38 pm Gimp is a little tough to master @Graeme1858 . You've got a good start!
Yes I tried GIMP for a while and just could not get on with it.
Scope: Skywatcher Evostar 80ED (SW 0.85 FR/FF) on a SW NEQ6Pro
Guiding; SW Evoguide 50ED, ASI 120mm mini
Meade 8" LX200 GPS on wedge (Guided with a cheapo 50mm guidescope and a ZWO ASI 120mm mini)
Sharpstar 61EDPH II (with dedicated 0.8 reducer) with wiliam Optics 32mm uniguide
Camera: ASI2600MC pro. QHY 163M with ZWO 7nm NB filters, Canon EOS700D astro mod
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Re: AP Processing Challenge 17 M97 The Owl Nebula- Gordon

#29

Post by Ruud »


This is a darktable screenshot. The modules I used are the ones on the right hand side.
Fitswork+Darktable.png
When I opened the tiff (prepared with fitswork), darktable automatically did 11 steps of processing. I turned off the last few and then experimented. That's why the history looks a bit messy beyond step 9.

Now I finally have a fully freeware contribution to the challenge! I'm happy, though I realise that in better hands, darktable should be able to do much better. But that is for later.
7x50 Helios Apollo 8x42 Bresser Everest 73mm f/5.9 WO APO 4" f/5 TeleVue Genesis 6" f/10 Celestron 6SE 0.63x reducer 1.8, 2, 2.5 and 3x Barlows eyepieces from 4.5 to 34mm
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Re: AP Processing Challenge 17 M97 The Owl Nebula- Gordon

#30

Post by STEVE333 »


Very nice job. All for free! Pretty cool. I've never even heard of darktable. In fact, fitswork is new to me also. I followed the Gimp --> Photoshop --> Pixinsight path. Many different paths to take in AP.

Cheers,
Steve
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Re: AP Processing Challenge 17 M97 The Owl Nebula- Gordon

#31

Post by Graeme1858 »


STEVE333 wrote: Tue May 25, 2021 11:40 pm Many different paths to take in AP.

Indeed!

And David has now posted AP Processing Challenge No. 18 so we can all have another go!

viewtopic.php?f=107&t=18412

Regards

Graeme
______________________________________________
Celestron 9.25 f10 SCT, f6.3FR, CGX mount.
ASI1600MM Pro, ASI294MC Pro, ASI224MC
ZWO EFW, ZWO OAG, ASI220MM Mini.
APM 11x70 ED APO Binoculars.

https://www.averywayobservatory.co.uk/
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