Controversy in highest usefull magnification

[RT65CB-SWL]

23 hours ago, JeremyS said:

That's what I figured, John

🙂

 

 

10 hours ago, andrew s said:

Which way round do you use it?

Regards Andrew 

 

That is almost as bad-ass as my 'little one'...

...though not yet tried it with my TV 13mm Nagler type 1 or type 6... stay tuned! 😜

Edited May 18, 2020 by Philip R

[RT65CB-SWL]

OK guys and girls! ...don't say I did not warn you all ...here it is.... my 'little one' (i.e. bad-ass)...
(click any image to enlarge it... go on... you know you want to)... 😜

    

Televue 13mm Nagler type 1 (left/top) & type 6 (right/bottom).

 

The 'scope OTA is one half of a 50mm binocular that was purchased via AstroBoot and the star diagonal from an astro-outlet in Leeds, West Yorks.

The e/p's just about achieve focus as they are shown in the images.  I used the neighbours bungalow roof apex that is about 20 metres away. I then screwed in a 1.25" nosepiece extension to the e/p's and just raised the e/p's up a little [<5mm] to reach focus on a house roof that is about 210+ metres away. I did try the Sun with a solar wedge and an 18mm WA. It did focus, but did not see any 'large' sunspots.

According to my calculations; the specifications are approximate and without the star diagonal:

• objective cell: 50mm
• focal length: 110mm
• magnification: 4x (with 13mm e/p) & 3x (with 18mm e/p).
• focal ratio: f/2.2

 

Edited May 19, 2020 by Philip R

[Supernova74]

Um as someone got to much time on there hands in lockdown lol 😆 

[Paz]

We need a new category of set up for these things... Permanent set up, grab and go set up, travel set up, and.... comedy set up?!

[Supernova74]

Yes it’s a new scope at rother valley optics for hobbits