Just thought I would share this picture. Peter Bobroff in Canberra has sent an early picture of his 16" F4 all aluminium scope ( with Deep Sky Optics mirror ). This is the third in a series of similar design , the first two being 20" F5 ( Galaxy optics mirror ) and 16" F5 ( Deep Sky Optics mirror ) for Patrick Purcell. He reports that images are indistiguishable in quality from the F5.
He reports that his wife Judy, for whom the scope was built, can observe at the Zenith without steps. You'll notice also that the scope can be used from a seat by simply swinging the scope over the zenith. The eyepiece then angles down at 45 degrees for seated viewing
. The mirror is edge supported for either orientation. A shroud is in progress. If the scope moves anything like the F5 , it will be very stable and smooth. Hope it will be at the SPSP in April. Well done , Peter.