|Object name:||Constellation:||Coordinates:||Apparent size:||Visual brightness:|
|Messier 14 (NGC 6402)||Ophiuchus||17h38m / -03°15'||11'||8.3 mag|
The globular cluster Messier 14 (NGC 6402) in the constellation Ophiuchus. Messier 14 contains several hundred thousand stars and is 28,000-56,000 light-years from Earth. It is fairly highly reddened by interstellar extinction (dust in the Milky Way). The globular cluster was discovered by French astronomer Charles Messier in 1764 (source: Wikipedia).
Twenty 3-minute exposures (62 minutes total exposure) at ISO 800 taken on May 21, 2020 were added for this shot with the DeepSkyStacker software and the final image processing was done 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).