Quote:
Originally Posted by [1ponders]
Thanks for the information about the amp glow Andrew. I didn't know about that and it explains some issues we've been having over the past fortnight.
Cheers
BTW do you need to cover the telescope/lens with using the builtin noise reduction?
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No you don't need to cover the scope/lens when using ICNReduction.
If you expose say for 2 minutes, the total time the camera takes is 4 min.
As you know the second half (2 min) is used by the camera to do the subtraction internally so no need to cover anything, but you do need to allow for this extra time if using a remote release timer or software.
EDIT: I do however recommend covering the viewfinder as stray light will interfere with the sensor when exposing. Even a red headlamp will cast internal reflections when the mirror is open/up in the camera.