Messier 18

 Posted: Sep 12th, 2026
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IC
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Technical Info
Telescope/Lens: Celestron Origin
Camera: Starvis 2 IMX678
Mount: Celestron NexStar Evolution
Guide Scope: Celestron StarSense Autoguider
Software: Siril
Exposure:
93 x 5" ISO/Gain: 50
Blue, Bortle 3 zone:
 Masterton, New Zealand
8 m
3
Resolution: 1910x1376 px
Scale: 520 KB

Messier 18 – Open Cluster

93 subs at 5 seconds each – 50 ISO, Bortle 2 – 3

Total Data: 7 minutes

Taken with Celestron Origin using OLV software.

West Taratahi Hall, Chester Rd, Masterton, NZ.

Wednesday 9th September 2026

Stacked and processed in Siril

Messier 18 or M18, also designated NGC 6613 and sometimes known as the Black Swan Cluster, is an open cluster of stars in the constellation Sagittarius.

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