Hemisphere:  Northern  ·  Constellation: Monoceros (Mon)  ·  Contains:  NGC 2239  ·  NGC 2244  ·  Rosette nebula  ·  The star 12Mon
NGC 2237 - Rosette Nebula : second... and 3rd edition side by side  !, 



    
        

            Ewam
NGC 2237 - Rosette Nebula : second... and 3rd edition side by side  !
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NGC 2237 - Rosette Nebula : second... and 3rd edition side by side !

Acquisition details

Dates:
March 23, 2015
Frames:
34×75(42′ 30″)
Integration:
42′ 30″
Avg. Moon age:
3.51 days
Avg. Moon phase:
13.31%

Basic astrometry details

Astrometry.net job: 775941

RA center: 06h32m04s.1

DEC center: +04°5710

Orientation: -159.004 degrees

Field radius: 0.773 degrees

Resolution: 620x460

File size: 313.4 KB

Locations: La Gueule du Loup (Malonne), Namur, Namur, Belgium

Description

EUREKA ! I just discovered why gradients are a big p.i.the a..., I mean, a big problem. Till now, I was pretty much spending hours trying to solve color issues, while almost forgetting to deal properly with the gradients! Who said "silly you" ?

This VERSION C is even not with the UHC master, just my 27 broad band, with no cleaning whatsoever, just a little contrast on Ps. Thanks PI, thank Ps, thank Paul who launched the inspiration...

Next version (and final) will come with all subs and proper processing routine...

Back in Malonne, I found this clear night to try my (probably) last go at the Rosette nebula. I believe I'm near the sweet spot in terms of exposure / iso settings :

27x 45sec @3200iso ;

7x 186sec with UHC filter @ 3200iso...

O-III in the last version ;

> Last VERSION ("3rd edition") : Reloaded old subs, could use darks (never did, just used to clean manually in Ps !), stretched properly, added the previous O-III subs (that where not in this edition) and "Voilà!" ; so much experimenting and months latter, it all come together ! Next version (season approaching here) will be a full SHO one !

Comments

Revisions

  • NGC 2237 - Rosette Nebula : second... and 3rd edition side by side  !, 



    
        

            Ewam
    Original
  • NGC 2237 - Rosette Nebula : second... and 3rd edition side by side  !, 



    
        

            Ewam
    D
  • NGC 2237 - Rosette Nebula : second... and 3rd edition side by side  !, 



    
        

            Ewam
    F
  • Final
    NGC 2237 - Rosette Nebula : second... and 3rd edition side by side  !, 



    
        

            Ewam
    G

Sky plot

Sky plot

Histogram

NGC 2237 - Rosette Nebula : second... and 3rd edition side by side  !, 



    
        

            Ewam