Any good Refractor focal length 200-250mm for ToUcam Pro?

Hi,

I am looking for a refractor with 200-250mm focal length. I wish to
capture the whole full moon/sun at prime focus with my ToUcam Pro
(eclipes video). I believe that I cannot cover the whole disk with
focal length beyond this.

Could you please advise where I can find such telescope; objective
size 40-50mm is OK.

I already have Televue Ranger; but I cannot find any 0.5x reducer for
it to serve my purpose.

Thank you in advance for your suggestion
Chote