Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Great Nebula in Orion  ·  M 42  ·  M 43  ·  NGC 1973  ·  NGC 1975  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1982  ·  The star 42Ori  ·  The star 45Ori  ·  The star θ1Ori  ·  The star θ2Ori  ·  The star ιOri
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M42 / Orion Nebula, 



    
        

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M42 / Orion Nebula
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M42 / Orion Nebula

Getting plate-solving status, please wait...
M42 / Orion Nebula, 



    
        

            hy
M42 / Orion Nebula
Powered byPixInsight

M42 / Orion Nebula

Technical card

Imaging telescopes or lenses: Williams Optics Zenithstar 105 ED Triplet APO

Imaging cameras: ZWO ASI1600mm Pro Cooled

Mounts: Orion Atlas AZ/EQ Pro

Guiding telescopes or lenses: Williams Optics Zenithstar 105 ED Triplet APO

Guiding cameras: QHY5L-II-M

Focal reducers: William Optics 0.8x Reducer/Flattener Flat6A II

Software: Adobe Phosotshop CC  ·  KStars Ekos/INDI, Stellarmate OS  ·  Adobe Lighroom CC Classic  ·  PixInsight 1.8

Filters: Astronomik SII 31mm 6nm  ·  Astronomik OIII 31mm 6nm  ·  Astronomik Ha 31mm 6nm

Accessory: Hotech SCA Field Flatener


Dates:Nov. 17, 2019Nov. 21, 2019

Frames:
Astronomik Ha 31mm 6nm: 109x240" (gain: 139.00) -20C bin 1x1
Astronomik Ha 31mm 6nm: 71x60" (gain: 139.00) -20C bin 1x1
Astronomik OIII 31mm 6nm: 87x240" (gain: 139.00) -20C bin 1x1
Astronomik OIII 31mm 6nm: 30x60" (gain: 139.00) -20C bin 1x1
Astronomik SII 31mm 6nm: 79x240" (gain: 139.00) -20C bin 1x1
Astronomik SII 31mm 6nm: 30x60" (gain: 139.00) -20C bin 1x1

Integration: 20.5 hours

Darks: ~25

Flats: ~25

Bias: ~87

Avg. Moon age: 21.77 days

Avg. Moon phase: 53.57%

Bortle Dark-Sky Scale: 5.00


Basic astrometry details

Astrometry.net job: 3258370

RA center: 5h 35' 6"

DEC center: -5° 18' 39"

Pixel scale: 1.325 arcsec/pixel

Orientation: 62.442 degrees

Field radius: 0.898 degrees


Resolution: 3893x2943

Data source: Backyard

Description

I tried to shoot two exposures, 240s and 60s, for this narrowband M42, in hopes of not blowing out the Trapezium cluster. 60s exposures nights of 11/17/2019 - 11/20. 240s exposures on the nights of 11/21-25. About 18 hours of 240s data and ~2 hours of 60s data. SHO processing, initially in Pixinsight, and then Photoshop layers.

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M42 / Orion Nebula, 



    
        

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