Celestial hemisphere:  Northern  ·  Constellation: Orion (Ori)  ·  Contains:  IC 2159  ·  LBN 854  ·  Monkey Head Nebula  ·  NGC 2174  ·  NGC 2175  ·  Sh2-252
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NGC2174 - The Monkey Head, 



    
        

            markusd112
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NGC2174 - The Monkey Head

Revision title: Nebula and Stars separated 2nd try

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NGC2174 - The Monkey Head, 



    
        

            markusd112
Powered byPixInsight

NGC2174 - The Monkey Head

Revision title: Nebula and Stars separated 2nd try

Equipment

Filters
Optolong UV/IR 2" Filter
Guiding Telescopes Or Lenses
TS Guiderscope 50/205

Acquisition details

Dates:
Feb. 9, 2022
Frames:
Optolong UV/IR 2" Filter: 80×180(4h) (gain: 0.00) -10°C
Integration:
4h
Darks:
20
Flats:
30
Bias:
30
Avg. Moon age:
8.20 days
Avg. Moon phase:
58.61%

RA center: 06h09m41s.47

DEC center: +20°3011.10

Pixel scale: 1.753 arcsec/pixel

Orientation: 117.344 degrees

Field radius: 1.000 degrees

WCS transformation: thin plate spline

More info:Open 

Resolution: 2903x2910

File size: 12.7 MB

Locations: Heimatsternwarte, Germany, Taunus, Hessen near Frankfurt, HE, Germany

Data source: Backyard

Description

Some clear nights, but with fog in the air and the moon, but I have done my best to get this image from the Monkey Head Nebula in Orion. 4 hours RGB with my Lacerta ED APO 72/432 and the ASI533MC on my iOptron GEM28

I have recognized some black structures on the stacked image, maybe that's dust on the lenses. But I don't know, why the flats haven't elimanted them...  I have changed the flat creation to NINA and the Flat Wizard with my Lacerta FBC... Maybe there is still some problem. These flats are now 4sec. Previously with ASIair and Lacerta PWM dimmer created flats have 500ms imagaging time.

Comments

Revisions

  • NGC2174 - The Monkey Head, 



    
        

            markusd112
    Original
  • NGC2174 - The Monkey Head, 



    
        

            markusd112
    B
  • Final
    NGC2174 - The Monkey Head, 



    
        

            markusd112
    C

B

Title: 2nd Revision with StarXTerminator

Description: In this Image revision I have separated the nebula and the stars with StarXTerminator in PixInsight to preprocess both seperately. After that I have combined it again with Pixelmath

Uploaded: ...

C

Title: Nebula and Stars separated 2nd try

Description: In this revision I have split nebula and stars with StarXTerminator. In the preprocessing of the nebula part I have reduced the blue channel a little more

Uploaded: ...

Sky plot

Sky plot

Histogram

NGC2174 - The Monkey Head, 



    
        

            markusd112