Celestial hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  HD115809  ·  HD115953  ·  HD115993  ·  HD116172  ·  HD116475  ·  HD117403  ·  HD117815  ·  HD118019  ·  IC 4263  ·  IC 4277  ·  IC 4278  ·  M 51  ·  NGC 5169  ·  NGC 5173  ·  NGC 5194  ·  NGC 5195  ·  NGC 5198  ·  NGC 5229  ·  PGC 2278401  ·  PGC 2279042  ·  PGC 2279089  ·  PGC 2279104  ·  PGC 2279116  ·  PGC 2279786  ·  PGC 2279834  ·  PGC 2281644  ·  PGC 2281785  ·  PGC 2282638  ·  PGC 2282665  ·  PGC 2282749  ·  And 215 more.
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M51 wide field, Göran Nilsson
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M51 wide field

Getting plate-solving status, please wait...
M51 wide field, Göran Nilsson
Powered byPixInsight

M51 wide field

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Description

Last image for the season from my Swedish obsy. I did two unconventional things with this image. I used wide field 400 mm focal length RASA, which is rarely used for galaxies except for the few very big ones, and I used a dual-band (Ha + Oiii) filter (since the moon was out). I did manage to capture much of the weak tidal streams around M51, and numerous of the small galaxies in the neighborhood. I had hoped to detect more strong Ha structures but could only find some diffuse and faint dusty structures.

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M51 wide field, Göran Nilsson