Contains: M 42, Great Nebula in Orion, NGC 1976, The star θ2Ori, The star θ1Ori
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Orion Trapezium Cluster

Technical card

Imaging telescope or lens: TS-Optics 8" Ritchey-Chrétien Pro

Imaging camera: ZWO ASI178MC

Mount: Sky-Watcher EQ6-R

Guiding telescope or lens: Sky-Watcher AC 80/400 StarTravel

Guiding camera: ZWO ASI120MM-S

Software: GIMPLuc Coiffier DeepSkyStackerRobin Glover SharpCap

Filter: Omegon Pro UHC

Accessory: Lacerta LED Flatfield-Box

Resolution: 1189x887

Dates: Feb. 13, 2018

Frames: Omegon Pro UHC: 392x3" (gain: 192.00) 5C bin 2x2

Integration: 0.3 hours

Darks: ~400

Flats: ~20

Flat darks: ~20

Bias: ~10

Avg. Moon age: 27.36 days

Avg. Moon phase: 5.25% job: 1929118

RA center: 83.820 degrees

DEC center: -5.390 degrees

Pixel scale: 0.618 arcsec/pixel

Orientation: 251.813 degrees

Field radius: 0.127 degrees

Locations: Terrasse, Vechelde, Niedersachsen, Germany


A look at the heart of M 42, where the trapezium cluster ligthens the dark. I tried this with 3 seconds subs and relative high gain, but i think the full well capacity is reached in the center. Next time i will try without binning and gain 64, hoping that this will boost full well capacity.






Turned upside down for aesthetic reasons.

Sky plot

Sky plot


Orion Trapezium Cluster,