Observation by Alan Thomas: M107 Globular Cluster in Ophiuchus

Uploaded by

Alan Thomas

Observer

Alan Thomas

Observed

2022 May 31 - 22:15

Uploaded

2022 Jun 06 - 19:00

Objects

M107

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Constellation

Ophiuchus

Field centre

RA: 16^h32^m
Dec: -13°03'
Position angle: -18°06'

Field size

0°36' × 0°27'

Equipment

Unistellar eQuinox 112mm reflector

Exposure

15min

Location

Norbreck Observatory, Warrington, Cheshire, UK.

Target name

M107 Globular Cluster in Ophiuchus

Title

M107 Globular Cluster in Ophiuchus

About this image

This loose globular cluster was discovered by Pierre Méchain in 1782. Distance c.20,900ly. The cluster is a tad old at 13.95 billion yrs!

Files associated with this observation

eVscope-20220531-221450 - Copy (2).jpg (948.1 kB)

Like this image

Callum Potter, Mark Fairfax, Dr Paul Leyland

Comments

Grant Privett, 2022 Jun 06 - 20:21 UTC

Isn't that older than the universe? :)

Alan Thomas, 2022 Jun 06 - 21:35 UTC

Indeed so. I think you will have to ask the cosmologists for an explanation. Perhaps something to do with the expansion of space. But given that the cluster lies within our galaxy, perhaps not . . .

Callum Potter, 2022 Jun 10 - 11:58 UTC

There is quite a bit of uncertainty in the ages of GCs. Although the referenced paper in Wikipedia gives 13.95 Gyr there is no error given. Another ref. I found gives 14 Gyr plus/minus 1.1 Gyr. But another more recent determination gives 12 Gyr.

I'll do a bit more of a literature review and post a note in the next deep sky update.

Alan Thomas, Dr Paul Leyland

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