NGC 6888 The Crescent Nebula in Cygnus
From the author of Sizing Up The Universe
21:09-22:18 EDT Aug. 7 2016, 20:40-23:21 EDT Aug. 26 2016, 20:37-23:23 EDT Aug. 27 2016
Starlight Express Trius SX-694 on 10" RCOS
Two frame mosaic
North (top) frame:
Hα = 120 mins,
OIII = 114 mins,
South (bottom) frame:
Hα = 78 mins,
OIII = 78 mins,
(in 6 min PHD2 guided increments).
21:09 EDT, August 24, 2009
Starlight Express SXV-H9 on Takahashi FSQ-106N
Hα = 70 mins,
OIII = 54 mins,
(in 2 min unguided increments).
00:31 EDT, August 8, 2004
Starlight Express SXV-H9 on Takahashi FSQ-106N
Hα =
60 mins (in 2 min unguided increments)
No flats, darks, or biases. Richardson-Lucy deconv.