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LDN 1235, Vdb 149, Vdb 150 and UGC 67671

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#1 Ginge

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Posted 11 October 2018 - 07:26 AM

Hi there!

 

Starting this season with an image shot in spring. Gathered a lot of exposure time but was pretty sure it wasn't going to amount to anything as the objects were pretty low in the sky glow from Oslo at the time. Had issues with moon gradients as well an haze, but after reading up on LocalNormalization in pixinsight and going over the material again I finally found a couple of exposures in each filter-stack that didn't have any problems, and used these as reference. And what LocalNorm didn't get I was able to diminish pretty well with just a handfull meticulously positioned background samples. You'd expect deeper from 26,3hrs integration time, but all in all I'm just glad all those hours weren't completely in vain. 

 

Tech specs and larger versions here: https://flic.kr/p/PMiTYs

 

 

31361502158_b8c822a90f_b.jpg

 

 

 

Best regards,

Ginge


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#2 BillHarris

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Posted 11 October 2018 - 09:39 AM

Very good!
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#3 Ginge

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Posted 11 October 2018 - 12:55 PM

Thank you very much, Bill!



#4 Jon Rista

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Posted 11 October 2018 - 01:35 PM

Very nice! I like your color...I feel the blue in this area is often over-saturated...I like the more neutral color here.


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#5 Ginge

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Posted 11 October 2018 - 01:52 PM

Thanks, Jon. One can easily go overboard with the Colour here, yes. I certainly did a couple of times before I ended up with this.

G

#6 dave59

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Posted 11 October 2018 - 05:18 PM

Very nice image. 26 hours well spent.



#7 BillHarris

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Posted 11 October 2018 - 09:25 PM

Reflection nebulas illuminated by O, B and A stars will tend toward blue. Nebulas lit by F, G and K may tend to balance towards white and K, M and N will tend towards warmer hues.
You also seem to have a nice spiral galaxy. To the right of the white star right of center.

#8 Alfredo Beltran

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Posted 11 October 2018 - 09:43 PM

Really, really nice image. Congratulations Ginge.

 

Best Regards,

 

Alfredo



#9 Ginge

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Posted 12 October 2018 - 01:19 AM

Thank you, guys!

 

I used the photometric colour calibration in PI with Average Spiral Galaxy as white reference. A very cool algorithm that works really well when especially when you can't be sure you have bare sky without nebulosity anywhere in the frame. But LRGB combination can do funny things to hues sometimes, especially in the lighter areas. Adam Block has a procedure for controlling this when combining that I'll be trying out next time. Don't understand it just yet, but have seen various examples of how colour is carried into the brighter areas after an LRGB combination that really tells me I need to learn more about the effect.

 

Best regards,

Ginge



#10 rlsarma

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Posted 12 October 2018 - 01:39 AM

Superb image. Thanks for sharing.



#11 Michael Deger

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Posted 12 October 2018 - 04:06 AM

Hi Ginge,

 

very good result of this difficult object.

 

 

All the best

Michael

 

http://www.galaxyphoto.de



#12 Ginge

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Posted 12 October 2018 - 07:32 AM

Thank you, Rajib and Michael!

 

Clear skies!

Ginge




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