NGC 6946
(Type: Galaxy, Const: Cygnus, Mag: 8.8, Size: 14')
- 2004-Aug-18/19 -
SXV-H9 image of NGC 6946, NGC 6946 redo#1 (~f/5.2, Meade
LX10 OTA on G11 at Anza [seeing 6-8, transp 2-8 (high
thin clouds first night)], MaxIm w/ SXV guidehead
guided, no darks or flats applied. Original version
above is an LRGB composite of 190:60:50:50 minutes of
exposure (19x10 L+IR unbinned, 6:5:5x10 min unbinned
RGBs) Processing: MaxIm (alignment, stacking, DDP on
luminance, color balance (1:1:2)), Photoshop (Luminance
Corrected LRGB, fade/minimum, cropped to remove
registration boundaries). "Redo#1" has an additional
3:3:2x10 min 2x2 binned RGBs incorporated into it,
Processing: MaxIm (alignment, stacking, color
combine/balance (1:1:2)), Photoshop (levels and curves
on luminance, Luminance Corrected LRGB processing,
unsharp mask and minimum/fade on luminance, layered
50/50 with original, cropped to remove registration
boundaries).
- 5/4/2002 - HX916 image of NGC 6946 (f/6.3, Meade LX10, 62 minute total
exposure [a stack of 31 2 minute images], STV guided, binned
2x2, flat and dark frames applied, brightness and contrast
adjusted, from Anza (OCA) [transparency 7, seeing 7, tracking
6]).
- 10/28/2000 - STV image of NGC 6946 (f/3.75, Meade LX10, track and
accumulate (5 of 60 seconds), wide mode, from LBV).
- Digitized Sky Survey image of NGC
6946 for comparison.