Looking for recommendations on a short-tube Newtonian for photography. F/4 sets quite a few challenges I know. Still I would like to venture in this territory because this speed would be more forgiving to the mount & guiding and also more travel friendly being basically airline compatible. For camera I'd start with a modified Nikon D5100 with this scope, not the lightest but still, lighter than a few eyepieces out there...
So far the candidates:
QUATTRO 150P with its own corrector, limited to approx 4/3rds sensor size (less than APSc) but super-fast f3.45! Expensive at first.
I am on the UK side of the pond, unsure if I can get the Apertura carbon unit here at reasonable shipping and customs costs.