Observation by Alan Thomas: IC 4665 Open Cluster in Ophiuchus

Uploaded by

Alan Thomas

Observer

Alan Thomas

Observed

2023 Aug 22 - 21:55

Uploaded

2023 Nov 02 - 15:01

Objects

IC4665

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Constellation

Ophiuchus

Field centre

RA: 17^h46^m
Dec: +05°43'
Position angle: +19°57'

Field size

0°36' × 0°27'

Equipment

Unistellar eQuinox 112mm reflector

Exposure

10min.

Location

Norbreck Observatory, Warrington, Cheshire, UK.

Target name

IC 4665 Open Cluster in Ophiuchus

Title

IC 4665 Open Cluster in Ophiuchus

About this image

This loose (Class III2p) open cluster in Ophiuchus was discovered by the Swiss astronomer Phillipe de Chéseaux in 1745. Unfortunately for him, having presented his observations to the Académie des sciences in 1746, they were promptly forgotten for the following 150 years.

Distance c.1,400ly. Apparent mag. 4.2.

Bortle 7/8, intermittent cloud.

Files associated with this observation

eVscope-20230822-215453 (2).jpg (192.3 kB)

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Callum Potter

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