Ahoy Comrades!
Finally I had a bit of free time to tweak spacing and orthogonality with my new telescope. There is still some room for improvement, but will leave it as is for now. I am kind off trading quality at f/6 (with just a flattener) for speed at f/4.5 (with a 0.75 reducer), but given my limited imaging time this is a good compromise.
Last night I collected twelve 15-minute Ha subs from Paddy in Brisbane.
CFF 105 mm with a small Riccardi reducer (about 480mm FL), f/4.5 and 3.69 micron pixels. Flats+bias were applied, no processing whatsoever except for star alignment and integration. This is a work in progress image :-)
Unadultered data:
http://www.astrobin.com/full/301118/0/
After applying a bit of PI magic:
http://www.astrobin.com/full/301118/B/
Thank you for looking!
Suavi