Starguide - A Practical Guide to Astro-Photography

Addendum - Telescopes and Lenses

TS-Optics 203/1624 RC Pro

updated: 2023-06-08

Optical Design:

True RC with a hyperbolic primary and secondary mirror.

Aperture:

203 mm / 8"

Focal length:

1624 mm

Focal ratio:

f/8

Resolution:

0.58"

Reflectivity:

99% reflectivity non-tarnishing dielectric mirror coatings

Back focus:

254 mm from the tube's backside or 159 mm from the 2" receptacle of the focuser

Tube Diameter:

230 mm

Tube Length:

580 mm with focuser

Weight:

8.25 kg with focuser, plus 500 g for extension tubes

Total Obstruction by Secondary:

85 mm

Focuser:

2" Crayford focuser

Connection Thread:

M90x1

Dovetail Bars:

GP style