Messier 39 is an open cluster in constellation Cygnus. It is also known as NGC 7092. The cluster was discovered by Guillaume Le Gentil, a French astronomer, in 1749. It took fifteen years until Charles Messier added M39 to his catalogue.
To me, beside the actual open cluster, I like this picture because there are so many additional stars in the background.
![]() | Date | 2013/11/11 |
![]() | Location | Böblingen / Germany |
![]() | Object | Open Cluster M39 |
![]() | Camera | Atik383L+ |
![]() | Guiding | yes, DMK31AU03.AS via OAG |
![]() | Telescope | 8" GSO Newtonian |
![]() | Barlow lens | none |
![]() | Mount | EQ6Syntrek |
![]() | Cooling | -15°C |
![]() | Luminance | 5x 400s, bin: 1x1 |
![]() | Red | 5x 100s, bin: 2x2 |
![]() | Green | 5x 100s, bin: 2x2 |
![]() | Blue | 5x 100s, bin: 2x2 |
![]() | Dark | 6x |
![]() | Flat | 10x |
![]() | Total exposure | ~58m |
The image is also available in full resolution.
Clear skies!
Last updated: June 20, 2022 at 10:16 am