Wednesday 14 November 2012

The Cone Nebula, NGC7332 and NGC7339.

NGC2264 . The Cone nebula. This faint complex of nebulousity is entwined in the Chrismas
tree cluster in Monoceros, lying at a distance of about 2,700 light years. This image was
captured with a 10 inch, f/4.8 reflector with PHD auto-guiding. The exposure times were
three single five minute exposures using RGB filters with the camera set on times 2 bin
mode. Times 2 bin mode was also used for the luminance channel, H-alpha using five minute
sub frames and matching dark frames. The exposure time was 35 minutes in H-alpha, making a
total exposure time of 50 minutes:



NGC7332 and NGC7339. These two remote galaxies lie deep with in the constellation of
Pegasus. A ten inch, f/4.8 reflector was used unguided. 20 sixty second exposures were
stacked with matching dark frames for each RGB colour channel, making a total exposure
time of one hour: