Observation by Paul Leyland: Segue 3 - a very small and faint globula...

Uploaded by

Dr Paul Leyland

Observer

Paul Leyland

Observed

2020 Nov 07 - 20:50

Uploaded

2022 Oct 31 - 17:03

Equipment

0.4m Dilworth Relay
Starlight Xpress 814 Trius Pro
No filter

Exposure

3150s in 53 subs

Location

Tacande Observatory, MPC J22

Target name

Segue 3,

Title

Segue 3 - a very small and faint globular cluster

About this image

Segue 3 may well be the smallest globular cluster in the galaxy. Its total luminosity is around 100-300 times solar and only 32 stars have been confidently assigned to the cluster, the brightest of which is 17th magnitude. The next half dozen or so are 19th -20th magnitude; this image goes down almost to 21.0 and show roughly half the stars in the cluster.

It was tracking down Balbinot 1, as a result of an observers' challenge, which led me to trying for Segue 3. Unfortunately, round tuits have been in short supply this last couple of years and I have only just processed the images.

Files associated with this observation

Segue_3.jpg (282.0 kB)

Like this image

Martin Lewis, David Basey, Callum Potter, Peter Carson

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