|Oph||17h38m / -03°15'||11'||8.32mag|
|The globular cluster Messier 14 (NGC 6402) in the constellation Ophiuchus on May 21, 2020. Messier 14
contains several hundred thousand stars and is 28,000-56,000 light-years from Earth. It is noticeably reddened by interstellar extinction (dust). The globular
cluster was discovered by French astronomer Charles Messier in 1764 (source: Wikipedia).
Twenty 3 minute exposures at ISO 800 were added for this shot with the DeepSkyStacker software (resulting in a 1 hour 2 minute exposure) 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).|
Search chart for Messier 14. Map © 2020 "The Mag-7 Star Atlas Project", www.siaris.net. Map is slightly modified. The map can be downloaded here .