The SDC-435 was fitted with a light pollution filter
M29, Open cluster in Cygnus with a 6", f/5 Newtonian
M13, Globular cluster in Hercules with a 6", f/5 Newtonian
September 29, 2010
On September 16 I used the modified SDC-435 fitted with a light pollution filter and a 0.5 focal reducer with an f/4.8 10" Newtonian. The AGC was set to HIGH
Eastern Veil Nebula C33 with a 10" f/4.8 Newtonian, a light pollution filter and a 0.5 focal reducer
Dumbbell Nebula M27 with a 10" f/4.8 Newtonian and a light pollution filter
Ring Nebula M57 with a 10" f/4.8 Newtonian and a light pollution filter
Great Globular Cluster in Hercules, M13 with a 10" f/4.8 Newtonian and a light pollution filter
September 16, 2010
On August 30 I used the modified SDC-435 fitted with a light pollution filter at the prime focus of an f/5, 150mm Newtonian. The AGC was set this time to LOW:
September 1, 2010
On August 30 I used the modified SDC-435 fitted with a light pollution filter at the prime focus of an f/5 150mm Newtonian. The AGC was set this time to LOW which produced less saturation and lower chrominance noise in particular:
There was a bright Moon in the sky but a pleasing result was obtained
August 30, 2010
The camera was fitted with a light pollution filter and the scope with a 6.3 focal reducer. DVD was captured in high quality and 244 useful frames were extracted with VOB Frame Extractor. The frames were stacked in Registax using a dark-frame scaled correctly using Dark Frame Scaler:
M82 the cigar galaxy
August 29, 2010
The sky was quite blue but the ring nebula still made a nice real-time observational object and a reasonable image.
August 23/24, 2010
The camera was fitted with a light=pollution filter and 15 minutes of DVD were recorded at high quality for the images and dark-frames. The BMPs were extracted from the DVD VOB files using VOB Extractor. The dark frame was scaled with Dark-frame scaler and the BMPs were dark-frame corrected, de-rotated and stacked in Deep Sky Stacker.
August 15, 2010