Observation by Mike Greenhill-Hooper: M81

Uploaded by

Mike Greenhill-Hooper

Observer

Mike Greenhill-Hooper

Observed

2022 Feb 05 - 22:00

Uploaded

2022 Feb 11 - 15:39

Objects

M81

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Constellation

Ursa Major

Field centre

RA: 09^h55^m
Dec: +69°03'
Position angle: +92°47'

Field size

0°28' × 0°18'

Equipment

Celestron C11 on SkyWatcher NEQ6 mount; f6.3 focal reducer
ASI294MMPro imaging camera; ASI224MC on OAG as guide camera

Exposure

4 hours of total exposure LRGB (60s) and H-alpha (120s); camera gain 121, offset 10.

Location

Miradoux, S.W. France

Target name

M81

Title

M81

About this image

Adding the H-alpha data made the image less bland colour-wise. Performed some tone stretching in Affinity Photo and obtained a more colourful image (hopefully not over-cooked!?)

Files associated with this observation

AF0 HaLRGB 0722 reprocess 6-gigapixel-art-scale-2_00x.jpg (1.4 MB)

Like this image

Mattia Piccoli, Simon Paul Davis, Manolo_Rodriguez, Tim Haymes, Graham Winstanley, David Basey, Peter Mulligan, Dean Ashton, Alan Thomas, Ron Johnson, Dominic Ford, Martina McGovern, Ian Hynes, Chris Hooker, Dr Paul Leyland

Comments

Dr Paul Leyland, 2022 Jun 13 - 18:56 UTC

A few of the globular clusters are visible in this image if you look carefully.

Mike Greenhill-Hooper, 2022 Jun 17 - 12:50 UTC

Thanks Paul for pointing this out, and referring to your painstaking work on your image of M81 in March 2019, I can indeed see some, which I am quite pleased about!

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