M81 (NGC3031) Bode's Galaxy and M82 (NGC3034) Cigar or Starburst Galaxy (Alastairmk)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's Galaxy · Cigar Galaxy · M 81 · M 82 · NGC 3031 · NGC 3034

M81 (NGC3031) Bode's Galaxy and M82 (NGC3034) Cigar or Starburst Galaxy, Alastairmk

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M81 (NGC3031) Bode's Galaxy and M82 (NGC3034) Cigar or Starburst Galaxy

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M81 (NGC3031) Bode's Galaxy and M82 (NGC3034) Cigar or Starburst Galaxy

Two galaxies in Ursa Major imaged through broadband (LRGB) and one narrowband (Ha) filter. Was really worth imaging in Ha to capture the starburst in M82 and the star forming nebulae in M81.

ASI1600MM-C with GAIN 10dB (0.28e/DN) cooled to -10C.

Exposures: L 142 x 180s, R 55 x 180s, G 56 x 180s, B 55 x 180s, Ha 62 x 480s for a total integration of 23.7 hours.

Fairly conventional processing in Pixinsight with emphasis on sharpening the galaxy detail and using Adam Block's small star erosion technique to de-emphasise stars and bring out the galaxies. RGB and Ha combination followed the process in the Light Vortex turorial.

Revision brightened background stars and removed artefacts at centre of nebulae.

Original
Final
B

NOVAC

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Status	Basic success
Started	...
Astrometry.net job	4351223
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M81 (NGC3031) Bode's Galaxy and M82 (NGC3034) Cigar or Starburst Galaxy

M81 (NGC3031) Bode's Galaxy and M82 (NGC3034) Cigar or Starburst Galaxy

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Contribution Index (beta):

M81 (NGC3031) Bode's Galaxy and M82 (NGC3034) Cigar or Starburst Galaxy

M81 (NGC3031) Bode's Galaxy and M82 (NGC3034) Cigar or Starburst Galaxy

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