I did 60 Halfa. DSS only liked 30, despite of 100% set. I did stack of 60 without alignment. The result of 30 was better than 60. Do not discuss with DSS !
A faint and small nebula.
GSO 305 mm - Canon T3 - OAG - Coma Corrector
light: 5 x 2 min - ISO 1600 - Skyglow Filter
Halfa: 30 x 2 min - ISO 3200 - 12 nm
http://www.astrobin.com/110753/0/
Detail:
http://www.astrobin.com/110755/0/
note: I finish with my test to use or not the Halfa and Filter wheel. My conclusion is: it worth ! Use it !
