rcheshire
01-01-2011, 11:21 AM
Nothing special - wide field - wanted to capture the Flame, Horsehead, Running Man and M42 nebula. But the clouds conspired to ruin an otherwise perfect night for suburbia.
The new lens is something of an unknown quantity experientially. Just trying it out.
197 light frames, master dark and bias no flats. Processed in Pixinsight 1.69.
200mm, f/2.8, iso800, average exposure 10 -15 seconds (Canon 1000D). Suburban light, some cloud. Focus 10x live view on Sirius. Visual Polar alignment was impossible due to light and cloud - drift aligned by taking several shots adjusting for trailing until stars were as round as possible.
Hoped that the SNR would be better, background is a little grainy. 1st image has some wavelet noise reduction sharpen and wavelet contrast enhancement.
Cropping could have been a thin strip between the main features, but framing was tight. I let things drift too far in the view finder.
Critical feedback invited.
The new lens is something of an unknown quantity experientially. Just trying it out.
197 light frames, master dark and bias no flats. Processed in Pixinsight 1.69.
200mm, f/2.8, iso800, average exposure 10 -15 seconds (Canon 1000D). Suburban light, some cloud. Focus 10x live view on Sirius. Visual Polar alignment was impossible due to light and cloud - drift aligned by taking several shots adjusting for trailing until stars were as round as possible.
Hoped that the SNR would be better, background is a little grainy. 1st image has some wavelet noise reduction sharpen and wavelet contrast enhancement.
Cropping could have been a thin strip between the main features, but framing was tight. I let things drift too far in the view finder.
Critical feedback invited.