Messier 4 - NGC 6121
Photo description / processing
Messier 4 - NGC 6121
105 subs at 5 seconds each – 30 ISO, Bortle 2 – 3
Total Data: 8½ minutes
Taken with Celestron Origin using OLV software.
West Taratahi Hall, Chester Rd, Masterton, NZ.
Wednesday 20th May 2026
Stacked and processed in Siril
Messier 4 or M4 (NGC 6121) is a globular cluster in the constellation of Scorpius, located near the star Antares. It was discovered by Philippe Loys de Chéseaux in 1745 and catalogued by Charles Messier in 1764. It was the first globular cluster in which individual stars were resolved.
Technical information
- Telescope/Lens
- Celestron Origin
- Camera
- Sony Starvis IMX178
- Mount
- Celestron Evo StarSense EQ
- Guide Camera
- Celestron StarSense Autoguider
- Software
- Siril
- Location
- Masterton, New Zealand
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