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  #1  
Old 04-01-2022, 10:45 AM
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Nikolas (Nik)
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First attempt at Dolphin head Nebula Edit: added a second image

Taken over 2 nights 8 hours in total 300 and 600 second images
Optolong L-extreme
ZWO Asi 294mc Pro
ASIAIR Pro for acquisition
TSoptics 130 APo and 0.75 riccardi reducer
The image from the sensor, especially Ha showed that dreaded sensor pattern that the 294mc pro is infamous for however the O3 was very clean. Combined rgb in astropixel processor then the rest in Photoshop. Gradient exterminator did a great job cleaning up the background.

I'll work on this further as soon as I set up my other machine which allows me to do better processing.
I have added a second image which I added more Ha not sure yet..
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Last edited by Nikolas; 06-01-2022 at 11:13 AM.
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  #2  
Old 04-01-2022, 11:57 AM
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floyd_2 (Dean)
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What a superb image Nik. This is one of my favourite objects and you've really captured it well.
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  #3  
Old 04-01-2022, 01:39 PM
AdamJL
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Wonderful. I’ve just tried shooting 5min subs in dark skies (no filter) and got nothing. This is a hard target and you’ve nailed it!
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  #4  
Old 04-01-2022, 01:59 PM
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Wilsil (Wilco)
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Great image, well done.
It is a hard target.
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  #5  
Old 04-01-2022, 04:05 PM
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Lovely detailed image with nice star colour.
Good one Nik

Nest
JA
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  #6  
Old 04-01-2022, 05:02 PM
RyanJones
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By far one of my favorite targets Nik. I’d love to give it a crack but I’m not sure how I’d go in Bortle 8 skies. A lovely rendition, well done.
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  #7  
Old 04-01-2022, 06:36 PM
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Nikolas (Nik)
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Thanks everyone, Ryan I took this from my backyard in Glen Iris, bortle 7 I reckon you can do it but you defo need narrowband or duo band filters depending on the camera. It is a very difficult target for sure
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Old 04-01-2022, 06:44 PM
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pkinchington (Peter (Kanga))
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Nice!
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Old 04-01-2022, 06:56 PM
Startrek (Martin)
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Nik,
Superb image for a OSC
Great detail , resolution , contrast and colour
Obviously hours and hours of quality data helps
Never attempted this object , it’s on my list
Well done indeed !!
Martin
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  #10  
Old 04-01-2022, 08:03 PM
Addos (Adam)
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great stuff! assume you did a bit of post work on udra to reduce flare/bloat?

quick question though - "dreaded sensor pattern that 294mc is infamous for"? if you see a bayer-like grid or banding it just means you didnt dither aggressively enough. i have same camera - no pattern.
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Old 04-01-2022, 08:07 PM
RyanJones
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Quote:
Originally Posted by Nikolas View Post
Thanks everyone, Ryan I took this from my backyard in Glen Iris, bortle 7 I reckon you can do it but you defo need narrowband or duo band filters depending on the camera. It is a very difficult target for sure
Really ? Wow. I may give it a go soon then. I’m going though a bit of a phase testing some different filters at the moment. It could be a good test.
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  #12  
Old 04-01-2022, 09:17 PM
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Top effort as usual Nik . Nearly made me go outside and change my target which I just started on M1
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  #13  
Old 04-01-2022, 09:22 PM
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Nikolas (Nik)
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Quote:
Originally Posted by Addos View Post
great stuff! assume you did a bit of post work on udra to reduce flare/bloat?

quick question though - "dreaded sensor pattern that 294mc is infamous for"? if you see a bayer-like grid or banding it just means you didnt dither aggressively enough. i have same camera - no pattern.

Hi Adam When I use the L-Extreme and there isn't much Ha as in this image there is a pattern that only flats remove, I dither properly and follow all the protocols but this is inherent in the 294

similar to this https://bbs.astronomy-imaging-camera...-red-pattern/4
I don't see it as much if the image is full on and it only appears with the L-Extreme
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  #14  
Old 04-01-2022, 09:31 PM
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Nikolas (Nik)
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Thanks Everyone This is a first attempt at processing this target will be playing around more when I finally get the new computer sorted
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  #15  
Old 05-01-2022, 03:22 AM
Luke125 (Luke)
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Nice going, sure is a faint one to capture
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  #16  
Old 05-01-2022, 08:44 AM
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gregbradley
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That is a superb image.
Greg
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  #17  
Old 05-01-2022, 01:42 PM
DarkArts
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Good image.
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  #18  
Old 05-01-2022, 02:42 PM
Placidus (Mike and Trish)
Narrowing the band

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Excellent.
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  #19  
Old 05-01-2022, 07:16 PM
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Andy01 (Andy)
My God it's full of stars

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Looking good Nik!
I’m working on this target as well, such a cool
& unique object - well worth taking your time on.
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  #20  
Old 05-01-2022, 07:20 PM
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Nikolas (Nik)
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Quote:
Originally Posted by Luke125 View Post
Nice going, sure is a faint one to capture
Sure is, even on the preview screen it was hard to discern at 300 seconds


Quote:
Originally Posted by gregbradley View Post
That is a superb image.
Greg
Cheers
Quote:
Originally Posted by DarkArts View Post
Good image.
Cheers
Quote:
Originally Posted by Placidus View Post
Excellent.
Cheers
Quote:
Originally Posted by Andy01 View Post
Looking good Nik!
I’m working on this target as well, such a cool
& unique object - well worth taking your time on.
I have finally set up my astro computer and gonna give it a red hot go now
OSC vs mono I don't stand a chance but will get the best I can from it. Looking forward to your image Andy
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