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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 M 42, 


            Giorgio Baj
 M 42
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M 42

Technical card

Imaging telescopes or lenses: Takahashi FS-128

Imaging cameras: Alta U8300

Mounts: Losmandy G11 Gemini 4

Guiding telescopes or lenses: Sky-Watcher ED 80/600

Guiding cameras: Atik 16 IC-S

Focal reducers: Takahashi F/6.2

Software: PixInsight  ·  Maxim DL

Filters: Optec Bessell B  ·  Optec Bessell V  ·  Optec Bessell R  ·  Optec Bessell Clear  ·  Optec H-Alpha 8nm

Accessory: FLI DF-2 Focuser

Dates:Jan. 16, 2010Jan. 18, 2010Jan. 19, 2010

Optec Bessell B: 6x300" -40C bin 2x2
Optec Bessell Clear: 3x300" -40C bin 1x1
Optec Bessell Clear: 3x60" -40C bin 1x1
Optec Bessell Clear: 3x600" -40C bin 1x1
Optec Bessell R: 6x300" -40C bin 2x2
Optec Bessell V: 6x300" -40C bin 2x2
Optec H-Alpha 8nm: 4x300" -40C bin 1x1
Optec H-Alpha 8nm: 4x60" -40C bin 1x1
Optec H-Alpha 8nm: 4x900" -40C bin 1x1

Integration: 3.7 hours

Avg. Moon age: 2.55 days

Avg. Moon phase: 8.40%

Bortle Dark-Sky Scale: 4.00

Mean FWHM: 3.06

Basic astrometry details

Astrometry.net job: 103550

RA center: 5h 35' 18"

DEC center: -5° 16' 1"

Pixel scale: 1.460 arcsec/pixel

Orientation: -87.678 degrees

Field radius: 0.818 degrees

Resolution: 620x455


Costellazione di Orione


Sky plot

Sky plot


 M 42, 


            Giorgio Baj