|Pegasus||21h30m / +12°10'||18'||6.2mag|
|The globular cluster Messier 15 (NGC 7078) in the constellation Pegasus
on August 30, 2016. Messier 15 is 33'600 light-years from Earth, 175 light-years in diameter and was discovered by Jean-Dominique Maraldi
in 1746. It is one of the oldest known and one of the most densely packed globular clusters known in the Milky Way galaxy (source: Wikipedia).
Twenty-one exposures of approximately 3 minutes and six exposures of approximately 1 minute each at ISO 800 were stacked with no dark frame subtraction with Deep Sky Stacker (resulting in a 1 h 15 min exposure) and further processed in Photoshop.
|Equipment: Canon EOS 450D Baader modified camera, TeleVue Paracorr Type II coma corrector, 16" f/4.5 "Ninja" dobsonian telescope riding on a dual-axis Tom Osypowski equatorial platform, Lacerta MGEN autoguider, Lacerta off axis system (field of view comparison: image of the moon with the same equipment).|
Search chart for Messier 15. Map © 2016 "The Mag-7 Star Atlas Project", www.siaris.net. Map is modified. The map can be downloaded here .