Observation by Gary Eason: M81 Group

Uploaded by

Gary Eason

Observer

Gary Eason

Observed

2023 May 07 - 22:47

Uploaded

2023 May 09 - 20:54

Objects

M81
M82

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Constellation

Ursa Major

Field centre

RA: 09^h55^m
Dec: +69°16'
Position angle: +67°48'

Field size

2°06' × 1°35'

Equipment

Sky-Watcher Explorer 150P
Sky-Watcher EQ5 Pro
Nikon D750 modified
Baader MPCC III

Exposure

800 x 30" ISO 1600

Location

Colchester UK Bottle 6

Target name

M81, M82 and adjacent galaxies

Title

M81 Group

About this image

My first serious attempt at this well-known part of the sky, imaged across three nights (clouds stopped play on the first two) with bright moonlight. I am reasonably pleased with the result but there is obvious room for improvement.

Files associated with this observation

M81 Group may2023 Gary Eason merged2.jpg (1.4 MB)

Like this image

Adam Rawlinson, Gerard Cauchi, Simon Paul Davis, Alan Thomas, Jim Tomney, Miguel Araújo, Graham Winstanley, Callum Potter

Comments

Adam Rawlinson, 2023 May 09 - 21:17 UTC

The're nice! - what if any post processing are you doing?

Love the detail in M81

Also impressed there are no satellite trails

Gary Eason

Gary Eason, 2023 May 09 - 21:28 UTC

Thanks, Adam. Stacked in APP and processed in Lightroom and Photoshop (in part using StarXTerminator). In fact there are what I thought at first were two satellite trails through M82 which puzzled me because I had excised any obvious subs with trails: I concluded in the end that they must be some sort of diffraction artifacts, caused perhaps by the moonlight. Mostly massaged out in processing.

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