Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  41 the01 Ori  ·  42 c Ori  ·  43 the02 Ori  ·  44 iot Ori  ·  45 Ori  ·  De Mairan's nebula  ·  Great Orion Nebula  ·  Hatysa  ·  IC 420  ·  Lower Sword  ·  M 42  ·  M 43  ·  M43  ·  Mairan's Nebula  ·  NGC 1973  ·  NGC 1975  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1981  ·  NGC 1982  ·  NGC1973  ·  NGC1975  ·  NGC1977  ·  NGC1980  ·  NGC1981  ·  Orion Nebula  ·  Sh2-279  ·  Sh2-281  ·  The star 42Ori  ·  And 8 more.
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Mairan's nebula, 



    
        

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Mairan's nebula

Technical card

Imaging telescopes or lenses: Celestron RASA

Imaging cameras: ZWO ASI 1600MM-Cooled ASI1600MM Cooled

Guiding telescopes or lenses: Orion 80mm GuideScope Guide scope

Guiding cameras: Orion SSAG

Software: StarTools 1.6  ·  SGP  ·  DeepSky Stacker (DSS) DSS DeepSkyStacker

Accessory: Celestron Focus Motor  ·  Adapter M42 T2/T2 M42T2  ·  Baader Ufc 2" #2459112  ·  Baader Ufc S70 RASA 8 #2459136  ·  Baader Ufc filter base#2459110  ·  Baader Ufc T2 adapter #2459115  ·  Baader Universal Filter Changer (UFC)  ·  Bahtinov mask  ·  Baader Planetarium Rasa 8 UFC  ·  Orion SSAG 80mm



Astrometry.net job: 4169190

RA center: 5h 34' 56"

DEC center: -5° 20' 9"

Pixel scale: 3.939 arcsec/pixel

Orientation: 100.905 degrees

Field radius: 1.569 degrees


Resolution: 2277x1699

Locations: Black Dog Observatory, Canada, Canada

Data source: Backyard

Description

3 hours of data taken in 2021

Ha data 70x120s average HFR: 2.4 Mean ADU: 3060
O-III data 90x60s average HFR: 2.1 Mean ADU: 4200
S-II 70x120s Average HFR: 2.90 Mean ADU: 1600 (Clear night with wind gust 15 km/h)

Original version appears to be larger due to cropping of the border.
Final version is the full frame with the full filter set.

Mixed of colors and channels: R= 50% S-II + 50% Ha, G= 85% O-III + 15% Ha, B= 100 O-III

Comments

Revisions

  • Mairan's nebula, 



    
        

            Rich Sky
    Original
  • Final
    Mairan's nebula, 



    
        

            Rich Sky
    B

B

Description: S-II data set acquired on 19-01-2021. 70x120s re-stacked and re-processed

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Mairan's nebula, 



    
        

            Rich Sky