B33 Horse Head nebula

The big TS refractor acquire a lot of signal also in a light polluted sky....

(click to enlarge)

Technical details:   TS152 f/5.9 achromatic refractor + Sx H694 + FW + 1"1/4 semi Apo + Sx AO-LF

Image results from sd combining 6x1200 seconds image, image is 2x2 binned.