Object |
M27, RA 19:59.6 Dec 22:43 |
Exposure |
209 minutes (69 X 3 minutes) |
ISO |
1600 |
Camera |
Canon 60Da DSLR |
Optics |
200mm SkyWatcher f/5 Newtonian reflector with
Paracorr for a total focal length of 1150 mm |
Location |
Marion Bridge, N.S., St. Croix, N.S. and
Smiley's Provincial Park
|
Processing |
Calibration and stacking Images
Plus
. Masked stretching
and split star processed in Images Plus. The masked stretch limits the
increase in noise when stretching the image. After the initial stretch
the feature mask was used to split the stars from the image and SMI
processing was used to further enhance the nebula. Colour enhancement
done in LAB
colour space using Images Plus 6 beta with curves. The star
colour was enhanced by selectively increasing the red then the blue
saturation. Finally the two images were recombined and
the background brightness was set using levels
to
adjust the black point. |