Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Great Nebula in Orion  ·  Horsehead nebula  ·  IC 432  ·  IC 434  ·  M 42  ·  M 43  ·  NGC 1975  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1981  ·  NGC 1982  ·  NGC 1990  ·  NGC 2023  ·  NGC 2024  ·  Part of the constellation Orion (Ori)  ·  The star 42Ori  ·  The star 45Ori  ·  The star Alnilam (εOri)  ·  The star Alnitak (ζOri)  ·  The star θ1Ori  ·  The star θ2Ori  ·  The star ιOri  ·  The star σOri
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Orion's sword @ Ha (2 frames mosaic), 



    
        

            Pleiades Astrophotography Team
Orion's sword @ Ha (2 frames mosaic)
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Orion's sword @ Ha (2 frames mosaic)

Technical card

Imaging telescopes or lenses: Sigma 180 mm F2,8 EX APO Macro OS HSM

Imaging cameras: QHYCCD QHY183M

Mounts: Sky-Watcher NEQ6

Software: Pixinsight

Filters: Optolong Ha 36mm 7nm


Dates:Jan. 20, 2020

Frames:Optolong Ha 36mm 7nm: 132x300" -40C bin 1x1

Integration: 11.0 hours

Darks: ~10

Flats: ~15

Bias: ~100

Avg. Moon age: 25.21 days

Avg. Moon phase: 19.65%

Bortle Dark-Sky Scale: 3.00


Basic astrometry details

Astrometry.net job: 3198200

RA center: 5h 38' 26"

DEC center: -3° 43' 15"

Pixel scale: 5.688 arcsec/pixel

Orientation: 94.927 degrees

Field radius: 3.338 degrees


Resolution: 1824x1466

Data source: Own remote observatory

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Orion's sword @ Ha (2 frames mosaic), 



    
        

            Pleiades Astrophotography Team

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