Observation by Alan Thomas: M21 Open Cluster in Sagittarius

Uploaded by

Alan Thomas

Observer

Alan Thomas

Observed

2022 Jul 31 - 00:37

Uploaded

2022 Jul 31 - 10:41

Objects

M21

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Constellation

Sagittarius

Field centre

RA: 18^h04^m
Dec: -22°28'
Position angle: -0°14'

Field size

0°32' × 0°34'

Equipment

42cm CDK17 corrected Dall-Kirkham f/6.8
FLI ProLine KAF-09000 camera
10Micron GM4000 mount

Exposure

120sec.

Location

Observatorio del Teide, Tenerife

Target name

M21 Open Cluster in Sagittarius

Title

M21 Open Cluster in Sagittarius

About this image

Another image from the COAST telescope, Tenerife. This open cluster (class I3r) was discovered by Charles Messier in June 1764.

Distance c.4,250 ly. Age c.4.6million ly.

Files associated with this observation

MESSIER21 (2).jpg (444.0 kB)

Like this image

Jeremy Shears, David Basey, Callum Potter

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