Observation by Graham Winstanley: M108

Uploaded by

Graham Winstanley

Observer

Graham Winstanley

Observed

2017 Mar 20 - 00:16

Uploaded

2017 May 02 - 23:25

Objects

M108

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Constellation

Ursa Major

Field centre

RA: 11^h10^m
Dec: +55°40'
Position angle: -22°29'

Field size

0°35' × 0°23'

Equipment

Skywatcher ED80
EQ6
QHY IMG2PRO at -20 deg
Guiding with ASI120MM, PHD2
Baader filters LRGB

Exposure

L 20 x 600s, RGB 20 x 200s per filter

Location

Bassingham, Lincolnshire

Target name

M108

Title

M108

About this image

Captured 20,23,24 March. Quite heavily cropped due rotation of frame when filter wheel started unscrewing. I feel that the galaxy looks red even though background neutralisation and colour calibration have been used. Processed in Pixinsight.

Files associated with this observation

M108 LRGB_0.jpg (252.6 kB)

Like this image

Dawson, Jeremy Shears, Peter Carson

Comments

Dawson, 2017 May 03 - 05:49 UTC

Nice. I agree with your comments about the galaxy having a red hue; the majority of the stars in the field of view also have a slight orange-red hue so I suspect the colour balance is just tending towards that end somewhere. Do you use a field flattener in the set up? Impressive work, well done.

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