Tiny telescope!

[Mognet]

The YouTube recommendation algorithm brought this up, a monolithic Schmidt-Cassegrain, and it's tiny! Rik ter Horst has been making these by hand for a while

 

[Alien 13]

I want one...

Alan

[Mognet]

9 minutes ago, Alien 13 said:

I want one...

Alan

Same here, even if to only experiement with

I'm curious as to how they perform. I couldn't find anything with a quick search, but if they are going to be using one in a satellite then they must perform well

[markse68]

me too- fascinating stuff and serious skills to accurately hand figure those tiny aspherical surfaces! 

Mark

[niallk]

...me three - I want one!

Thanks for posting 👍

[LukeSkywatcher]

Emma Chissit? (Aussie slang, for "how much is it"?).

Looks cool.

[Richard N]

On 23/10/2021 at 21:18, LukeSkywatcher said:

Emma Chissit? (Aussie slang, for "how much is it"?).

Looks cool.

Slottam Ony I suspect. 

[McQ]

Followup by the group that commissioned the tiny scopes.

 

 

[Mognet]

38 minutes ago, McQ said:

Followup by the group that commissioned the tiny scopes.

 

 

Thanks for that. It looks like they are quite capable performers, and certainly well suited to satellite and UAV use as they won't be prone to vibration related problems

[Boki Aristarh]

Nice little wonder... Must have item

[Alien 13]

11 hours ago, Mognet said:

Thanks for that. It looks like they are quite capable performers, and certainly well suited to satellite and UAV use as they won't be prone to vibration related problems

Having the reflective surface on the "inside" so to speak also means that the coating is immune from degradation so no cleaning or colimation.  Wonder how long before mobile phones start introducing this tech for real telephoto performance in a tiny package.

Alan

[andrew s]

Fascinating,  if not as original as they claim. Solid Schmidt designs were described by A. S. DeVany in "Master Optical Techniques " published in 1981. Although then the aim was f1 cameras and faster.

That was in the days when I aspired to make my own optics.  It soon passed as I don't have the right temperament! 

Regards Andrew 

[Captain Scarlet]

My copy of Sidgwick has the following page, which although it’s the 1980 edition suggests that almost everything dates to the 1971 edition:

[Mognet]

That solid Schmidt does look similar, and means that the solid telescope is not a new idea. LLNL claim to have a patent on their design, so I wonder how this would affect it. I also didn't see anything to say when Rik ter Horst had come up with his idea as it looks like he's been making them for a few years

[Priesters]

Yep, want one too but can someone tell me where/how I attach my 32mm panaview?

[Mognet]

4 hours ago, Priesters said:

Yep, want one too but can someone tell me where/how I attach my 32mm panaview?

I think we're going to need a bigger scope! Grinding a monolithic telescope of 200mm or more diameter could be a bit of a tricky prospect though