The PinWheel Galaxy( M101 : HaLRGB)

 I had the good fortune of borrowing an APM 175/1400 LW F/8 TRIPLET from a fellow astronomy club member for the long weekend and had my fun with it. It is truly a spectacular scope.

Equipment Details : 

OTA : APM 175mm Triplet

Mount : Losmandy G11

Imaging Camera : Qsi683wsg

Guiding Camera : Lodestar X2 OAG

Filters : Astrodon LRGB + 3nm Ha

Exposure Settings : 

L : 40* 1200s

R :  20 * 600s ( Binned 2*2)

G :  20 * 600s ( Binned 2*2)

B :  20 * 600s ( Binned 2*2)

Ha : 10 * 1200s