Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Great Orion Nebula  ·  M 42  ·  M 43  ·  Mairan's Nebula  ·  NGC 1976  ·  NGC 1982  ·  Orion Nebula  ·  The star θ1Ori  ·  The star θ2Ori
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M42 HOO-RGB, 



    
        

            Kathy Walker
M42 HOO-RGB
Powered byPixInsight

M42 HOO-RGB

Getting plate-solving status, please wait...
M42 HOO-RGB, 



    
        

            Kathy Walker
M42 HOO-RGB
Powered byPixInsight

M42 HOO-RGB

Technical card

Imaging telescopes or lenses: Orion 200mm f/4 Newtonian astrograph

Imaging cameras: Atik 383L+ mono

Mounts: CEM60

Guiding telescopes or lenses: KW Telescopes KWIQ Guider

Guiding cameras: QHY5

Software: Pixinsight 1.8

Filters: Astrodon RGB  ·  Astrodon 5nm Oiii  ·  Astrodon 5nm Halpha

Accessory: TeleVue Paracorr Type 2


Dates:Dec. 27, 2014Jan. 19, 2021

Frames:
Astrodon 5nm Halpha: 7x120" (14') bin 1x1
Astrodon 5nm Halpha: 6x180" (18') bin 1x1
Astrodon 5nm Halpha: 4x300" (20') bin 1x1
Astrodon 5nm Halpha: 4x600" (40') bin 1x1
Astrodon 5nm Oiii: 10x420" (1h 10') bin 1x1
Astrodon Luminance: 6x10" (1') bin 1x1
Astrodon Luminance: 9x60" (9') bin 1x1
Astrodon RGB: 44x60" (44') bin 2x2

Integration: 3h 36'

Avg. Moon age: 6.08 days

Avg. Moon phase: 36.28%


Basic astrometry details

Astrometry.net job: 4213465

RA center: 05h35m03s.6

DEC center: -05°3101

Pixel scale: 1.202 arcsec/pixel

Orientation: 0.573 degrees

Field radius: 0.642 degrees


Resolution: 3148x2208

Data source: Backyard

Description

The nebula is all narrowband, with the red channel as Ha-Oiii, green as Ha+Oiii, and blue as Oiii. Luminance is Ha+Oiii. Stars are RGB.

Comments

Revisions

  • M42 HOO-RGB, 



    
        

            Kathy Walker
    Original
  • M42 HOO-RGB, 



    
        

            Kathy Walker
    B
  • Final
    M42 HOO-RGB, 



    
        

            Kathy Walker
    D

B

Description: This version uses a blended LHaOiii luminance layer, with natural-colour RGB.

Uploaded: ...

D

Description: I did a more careful stretch on this version, to bring out the faint nebula on the south and west sides. Then, after comparing the RGB and HOO versions, I blended them.

Uploaded: ...

Sky plot

Sky plot

Histogram

M42 HOO-RGB, 



    
        

            Kathy Walker