Messier 15

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Object data of M15

Object type: Globular star cluster (IV)
Size: 18'
Magnitude: 6.2 mag
Constellation: Peg
Distance: 33,000 Ly
Notes: M15 is about 33,000 light-years from Earth and has a diameter of 175 light-years. Messier 15 is one of the most densely packed globulars known in the Milky Way. Its core has undergone a contraction known as 'core collapse'.

Exposure data

Date: 2018-09-09 until 2018-09-18 (7 nights)
Location: Nussbach / Austria (400m)
Telescope: 12" Newtonian telescope (f=1120mm)
Camera: QSI 660wsg-8 with Astrodon filters
Binning: L 1x1 / RGB 1x1
Mount: ASA DDM85
Exposure time: L 110x2min / R 36x2min / G 36x2min / B 36x2min
Exposure time total: 7h 16min
Notes: Only data with very good seeing were used.