Observation by Dean Ashton: A globular cluster far, far away - M81's...

Uploaded by

Dean Ashton

Observer

Dean Ashton

Observed

2022 Aug 01 - 20:00

Uploaded

2022 Aug 25 - 15:10

Objects

M81

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Constellation

Ursa Major

Field centre

RA: 09^h55^m
Dec: +69°03'
Position angle: -0°06'

Field size

0°45' × 0°32'

Equipment

Celestron 9.25 EdgeHD with 0.7x focal reducer
QHY268C Camera
Optolong L-Pro Filter

Exposure

81x600s exposures at /f7.0

Location

St Austell Cornwall

Target name

M81 GC1

Title

A globular cluster far, far away - M81's brightest GC

About this image

The inset picture of the image highlights M81's brightest globular cluster. Having read about the cluster in https://academic.oup.com/mnras/article/436/3/2763/1267147 I was able to identify it in my own image of M81 taken with a Celestron 9.25 EdgeHD scope at /f7.0. The paper refers to M81's brightest globular cluster as GC-1.

81x600s light frames of M81 were captured in February 2021 and January & February 2022.

Files associated with this observation

M81_GC1_86x600s_2021_2022_Dashton.jpg (1.9 MB)

Like this image

Martina McGovern, Brad Thomas, Dr Paul Leyland, Jim Tomney, Simon Paul Davis, Paul Whitmarsh, Mattia Piccoli, Mark Fairfax, Mr Simon Francis Dawes, David Basey, Peter Mulligan, David Davies, Dominic Ford

Comments

Dr Paul Leyland, 2022 Aug 25 - 19:46 UTC

Very nice!

Been looking for any of the others? I can provide a table of co-ordinates, which is also linked from one of my images.

Dean Ashton

Dean Ashton, 2022 Aug 28 - 12:16 UTC

Paul, I would very much appreciate the table of coordinates. I have found your excellent image and the cited reference. Thank you.

Dr Paul Leyland, 2022 Aug 29 - 16:57 UTC

Let me see what I can do.

Unfortunately the current incarnation of britastro.org makes it a PITA (or so it seems to me) to send you an email. I am, amongst others, paul.leyland (at) gmail.com. Please drop me a line.

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