NGC 6939 & NGC 6946 (Fireworks Galaxy)

NGC 6946 (Fireworks Galaxy) & NGC 6939

LRGB image

 

NGC6939

NGC 6939 (cropped)

 

NGC 6946 (Fireworks Galaxy)

NGC 6946 (cropped)

 

 

Target Information

  • ALTERNATIVE DESIGNATION(S):
    • NGC 6939 (right):  Collinder 423, Melotte 231
    • NGC 6946 (left): Fireworks galaxy, Arp 29
  •  TYPE:
    • NGC 6939:  open cluster
    • NGC 6946:  spiral galaxy
  • CONSTELLATION:
    • NGC 6939:  Cepheus
    • NGC 6946:  Cygnus
  • DISTANCE:
    • NGC 6939:  ~4,ooo light years
    • NGC 6946:  ~22.5 million light years

Imaging Information

  • IMAGING DATE(S):  September 2016
  • L:  10 min subs x 17, Bin 1×1
  • R:  10 min subs x 12, Bin 2×2
  • G:  10 min subs x 11, Bin 2×2
  • B:  10 min subs x 10, Bin 2×2
  • TOTAL EXPOSURE TIME:  335 mins = 5.6 hrs

Equipment

  • TELESCOPE:  Takahashi TOA-130F
  • MOUNT:  Software Bisque Paramount ME
  • CAMERA:  SBIG STL-11000XM
  • GUIDING:  TC-237 (internal autoguide chip)
  • FILTERS:  Astrodon
  • IMAGE ACQUISITION SOFTWARE:  TheSkyX, CCDAP5, FocusMax V4
  • PROCESSING SOFTWARE:  PixInsight