ScienceDownEast | ScienceDownEast Astrophotography | Galaxies | M081 Bodes Galaxy and M082 Cigar Galaxy | M81 and M82 using GHS

M81 and M82 using GHS

M81, Bodes Galaxy and M82, the Cigar Galaxy . M82 was discovered, along with its neighbor M81, by the German astronomer Johann Elert Bode in 1774. Located 12 million light-years from Earth in the constellation Ursa Major, M82 has an apparent magnitude of 8.4

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Total image time was 5 hours.

Exposure 11x20 min.+ 8x10 min.
GAIN 100
Camera ToupTek ATR2600C [6224 x 4168]
Optics 120mm Skywatcher Esprit on a Proxisky UMi20S Strain Wave mount
Guiding ToupTek GPM462M using Phd2
Controller Kstars on MeLe Quieter 4C
Filter Optolong L-eNhance
Location Lower Sackville, Nova Scotia.
Date 2025-03-14, 2025-03-20
Processing Processed in PixInsight.
SetiAstro Automatic DBE
SpectrophotometricColourCalibration
BlurXTerminator
NoiseXTerminator
Generalized Hyperbolic Stretch (GHS) (using Blair MacDonald's excellent YT Tutorial)
StarXTerminator
In the starless image: CurvesTransformation, MultiscaleLinearTransform
PixelMath recombination ~((~stars)*(~starless))



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