Nebulosity and taking darks

[Arthur Alchin]

I now have a combination of MacBook, Nebulosity and Meade DSI.

Can anybody tell me how to take "Darks" with Nebulosity, can't find it documented anywhere.

Thanking you

Arthur

[multiweb]

Plug your scope and shoot. :)

[White Rabbit]

just cover the end of ur scope and take images of the same duration as ur light frames. take 1for every image u take then stack them.

[Arthur Alchin]

will nebulosity automatically subtact the bad pixels??

[multiweb]

You need to do a bit of reading about calibration frames. What dark subtraction, flat fielding and bias frames do to a raw sub. If you check Craig's blog on starklabs you'll find answers to all your questions.