Henry,
In the post 13 reference you mention using a TMB 4mm Supermonocentric eyepiece.
I have an old uncoated monocentric but didn't use it much.
What interested me was finding a reference to the Zeiss 1.25 inch and Pentax 0.965 inch orthoscopics being considered the best planetary eyepieces made.
With the Pentax 100mm f/12 was a set of these 0.965mm orthos, and I hadn't realised they were something special.
Optically this telescope was probably the best scope I owned and I could use up to 300x on planets and with a 3mm Clave Plossl, 400x for testing.
I gave the telescope to a friend.
Also I didn't know that the 20.5 inch f/3.9 Newtonian mirror was 1/20th wave, until the professional mirror maker told me it turned out to be that good. I suppose the Seeing was never good enough for me to realise how good it was.
Jim Hysom who made the telescope did say he was transfixed by the view of the Orion nebula and spent an hour unable to look away from the view from his dark site, some way from Cambridge.
Unfortunately he recently passed away, but leaves many fine telescopes still being used.
In the post 13 reference you mention using a TMB 4mm Supermonocentric eyepiece.
I have an old uncoated monocentric but didn't use it much.
What interested me was finding a reference to the Zeiss 1.25 inch and Pentax 0.965 inch orthoscopics being considered the best planetary eyepieces made.
With the Pentax 100mm f/12 was a set of these 0.965mm orthos, and I hadn't realised they were something special.
Optically this telescope was probably the best scope I owned and I could use up to 300x on planets and with a 3mm Clave Plossl, 400x for testing.
I gave the telescope to a friend.
Also I didn't know that the 20.5 inch f/3.9 Newtonian mirror was 1/20th wave, until the professional mirror maker told me it turned out to be that good. I suppose the Seeing was never good enough for me to realise how good it was.
Jim Hysom who made the telescope did say he was transfixed by the view of the Orion nebula and spent an hour unable to look away from the view from his dark site, some way from Cambridge.
Unfortunately he recently passed away, but leaves many fine telescopes still being used.