• NGC 6809, Messier 55 in Sagittarius
  • NGC 6809 in Sagittarius, M55
  • NGC 6809 (Messier 55 in Sagittarius) is one of the easiest globular clusters to resolve.
  • FOV is approximately 54' × 36'; the angular size of M55 is about 19'.
  • Twelve 300 second guided subs (1 hour), Orion Sirius EQ-G mount,
  • taken at Darling Hill Observatory in Vesper, NY on 3 August 2021.
  • ZWO ASI120MM mini mono guide camera, ZWO 30mm guide scope,
  • ZWO ASI071MC Pro Cooled (0°C) Color CMOS with gain 180,
  • Orion 127mm Mak-Cass (1540mm, f/12.1).