Hi
Just finished taking and processing NGC 2440.
10 inch f5.6 Newtonian, off axis hand guided with q guider cam and guidestar on laptop monitor
Modded 350D
Idas uv/ir and Baader UHC-S filter, Baader MPCC coma corrector
near full moon.
Image is 6x5 mins ISO 400, masked with 8x2 mins ISO 200.
Ive included a full frame downsized image and a full resolution crop.
Was sooo nice to see clear skies, though some cirrus cloud patches were about.
Scott
Thanks all.
Yes it was quite high in the sky, I very carefully checked focus, and guided it as carefully as possible. The comatic guidestar was about the length of a small fingernail on the monitor, would make it hard to guide by looking through the guidescope but easier on the monitor, I just aim to keep it still, making fast or slow corrections to do so.
Scott
Many thanks
Ive looked online and am suprised to find very few images of it apart from the HST image. It is not that big but surprisingly bright.
The centre is very bright compared to the rest, I had to use masking to stop it becoming a burnt out mass. Whats amazing is seeing it so bright and colourful even on the raw subs before processing.
It would be a readily visible visual object too, trouble is with the cloudy weather Im always so desparate to photograph, I dont have the time to take off the camera and put an eyepiece on
Scott