Cold weather imaging

Hi all

Couple of images taken when very cold about -18 c at the end

Canon xt batteries were the first thing to fail..

Nexstar scope worked fine in the cold temps though very noisy when slewing

Tried my Celestron Light polution filter in fron of the camera

Imaged M45 and M42 to test it

Results were good in that it kept stars from bloating and reduced the Chromatic Aberation