Astrophotography by Mario Cogo

M7 - Ptolemy Cluster (Scorpius)

M7 

Noto fin dai tempi di Tolomeo nel 130 d.C. M7 un ammasso aperto facile da osservare nelle vicinanze della coda dello Scorpione.

Formato principalmente da stelle blu molto calde dista da noi circa 980 anni luce.

- Date / Location : 06/07/2016 from Tivoli Southern Sky Guest Farm "Namibia"
- Lens / Camera : Astro-Physics "Starfire" Apo Refractor 127mm f/8 - Canon EOS 6D CDS (Baader Modified)
- Mount / Guide : Astro-Physics 1200 GTO -  Lacerta Mgen stand alone autoguider on 9x50 Finderscope
- Exposure Time : Exposures of  1 & 6 Min. (100 min Total)  @ 1600 Iso, No Dark - Yes Flat.
- Processing : Image Plus (Calibration), Registar (Alignment), Photoshop, Image Plus, SpikePro (Processing)
- Note : Good Trasparency - Temp +3C - SQM-L 21,87

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