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M13 - Σφαιρωτό Σμήνος στον Ηρακλή

Messier 13 called the Great Globular Cluster in Hercules is a globular cluster in the constellation of Hercules. It is barely visible with the naked eye on a very clear night. Its diameter is about 23 arc minutes and it is readily viewable in small telescopes. Nearby is NGC 6207, a 12th magnitude edge-on galaxy that lies 28 arc minutes directly north east. 

double

Location / Exposure Date

Mauna Keratea obs May 2014

Telescope

Toscano RC 10" - AP CCDT67 f6

Mount

Astro-Physics 1200GTO

Guiding QHY 5IIL - lunatico 220mm Guide scope

Camera

QHY9 KAF 8300 mono CCD, Temp -25 C

Filters / Exposures

L 18x300 sec bin 1x , RGB 12x300 bin 1x

Total Exposure time

2,5 ~ hours

Software

Nebulosity 2, DSS, Photoshop CS, Starry Night

 

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