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 at full moon., 



    
        

            Tom Gray
M42 at full moon.
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M42 at full moon.

Getting plate-solving status, please wait...
M42 at full moon., 



    
        

            Tom Gray
M42 at full moon.
Powered byPixInsight

M42 at full moon.

Technical card

Imaging telescopes or lenses: William Optics Zenithstar II 80 ED

Imaging cameras: Meade DSI 3 Pro

Mounts: Meade Fork mount w/wedge Meade

Software: SiliconFields / Ivo Jager StarTools v1.6  ·  Penumbra (George Morimosato) v0.6  ·  Meade Envisage V4.05

Filters: Optolong L-eNhance 1.25"


Dates:Dec. 1, 2020

Frames: 48x120" (1h 36')

Integration: 1h 36'

Avg. Moon age: 15.77 days

Avg. Moon phase: 98.87%


Basic astrometry details

Astrometry.net job: 4051753

RA center: 05h35m20s

DEC center: -05°2540

Pixel scale: 2.418 arcsec/pixel

Orientation: 186.675 degrees

Field radius: 0.568 degrees


Resolution: 1347x1022

Locations: Home 'observatory' (Bortle 5), Derbyshire, United Kingdom

Data source: Backyard

Description

Taken with my WO Zenithstar II 80ED APO, mounted on my spare LX5 drive, this image consists of 96m integration with 120s unguided subs, through my Optolong L-eNhance filter. The full moon, just south of Auriga, washed out my autoguider, and was shining brightly down my scope, with surprisingly little interference. Data were captured in Envisage, stacked and aligned in Penumbra and processed in Startools with a standard workflow.

I originally bought this scope for wider-field visual use, which it does very well, on a Stellarvue M2 Alt-Az mount (a prototype with built in optical encoders, which makes finding things easy with my ArgoNavis). With just a red dot finder, I am going to have to practice my star hopping, and get used to an inverted image.

The great Orion Nebula, an expanse of Ha and OIII emissions, shows up well in narrowband, and this 54x41' apparent FOV, spans approximately 24 LY in reality.

Comments

Revisions

  • Final
    M42 at full moon., 



    
        

            Tom Gray
    Original
  • M42 at full moon., 



    
        

            Tom Gray
    B

B

Description: This version was stacked and aligned in Penumbra with HDR brightening and some sharpening. A nice smooth image, but it goes to show how much more detail is visible when processed in Startools.

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Sky plot

Sky plot

Histogram

M42 at full moon., 



    
        

            Tom Gray

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UK Astro-Imaging