On 2018-04-29 04:09:26 +0000, RichA said:

On Saturday, 28 April 2018 16:01:43 UTC-4, android wrote:
On 2018-04-28 00:41:36 +0000, RichA said:

On Friday, 27 April 2018 20:40:45 UTC-4, RichA wrote:
Interesting. An in-baffle tube field flattener. I'd probably have made
it outboard and a f-stop reducer, but this still looks good. Figure
maybe $5000 for the OTA and $10,000 for a mounted scope. The mount
will likely include modern electronics, perhaps Goto. Scroll near the
bottom of the page.

https://www.cloudynights.com/topic/5...estar-5/page-8

This is actually a diffraction-limited telephoto lens of long focal length.

Can you replace the eyepiece with an T2 mount adapter? Thinking DOF here...
--
teleportation kills

Camera goes on the end, eyepiece is on the side, you turn a knob to
switch between them.

Godie! Now let's have a looksie at the weather stats... Opsis!
--
teleportation kills