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Observation by Graham Winstanley: M51 Whirlpool galaxy

Uploaded by

Graham Winstanley

Observer

Graham Winstanley

Observed

2023 May 10 - 00:00

Uploaded

2023 Aug 10 - 21:19

Objects

The Whirlpool Galaxy (M51)
NGC5194
IC4263
IC4282
IC4277

Planetarium overlay









Constellation

Canes Venatici

Field centre

RA: 13h29m
Dec: +47°11'
Position angle: -176°45'

Field size

0°38' × 0°51'

Equipment
  • Altair Astro Wave Series 115 F7 ED Triplet
  • Atik 490ex CCD
  • Astrodon LRGB filters
  • Baade H filters
  • SW EQ6
Exposure

Lum 20 x 300s; RGB 20 x 200s per filter; Ha 5 x 300s

Location

Bassingham, Lincolnshire

Target name

M51

Title

M51 Whirlpool galaxy

About this image

Data captured between 26 April and 10 May 2023.

The reason for the delay in posting is that this is my third version of the processing with Pixinsight and Affinity Photo. The key to extracting more from the fainter parts of the image was discovering the tone mapping persona of Affinity Photo (thanks to a webinar by Nik Szymanek on Telescope Live).

The blue glow at the right hand edge is caused by a bright star just outside the field of view.

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