See this thread for more info on the scope.
http://www.iceinspace.com.au/forum/s...ad.php?t=28500
First and second image is a HA of IC 4628 in Sco.
Details 4x4min at ISO 1600 with 150mm Achro at f/4.5. Astronomik HA filter.
Third is blue and green from Nebula filter HDR image and red from HA HDR image blended with ImagesPlus. Also with 150mm Achro at f/4.5.
No cooling and no accurate focusing as I still have to fit the digital calipers to the focuser.
Looks like the achro will be good for getting very dim nebulae in narrow band.
Bert