From the site.
It incorporates a 20" mirror operating at f4, giving it a 80" focal length.This is a reasonably "fast" optical configuration yielding splendid wide field images of deep sky objects. Planetary observations should really be attempted using the 14" Meade LX200.
The scope was developed and manufactured by Pulsar Optical company.
The top cage is rotatable so giving ease of observations, I have personally tested collimation during rotation and it held reasonably well. As always with this type of configuration you will always loose some degree of collimation, the trick is to observe one part of the sky fully before attempting to rotate the cage, so decreasing the likelihood of loss of collimation.
The primary mirror is fitted with cooling fans and a dew heater is fitted to the secondary mirror. There is room for a motor to be fitted to the polar axis so that we can track objects, hence the equatorial mount. Presently we are attempting to locate a motor suitable for the job, any suggestions gladly welcomed by all.
20" Split Ring Equatorial
This telescope is a prototype design of a split ring equatorial style scope, with a truss tube design.
Optical Design Newtonian
Clear Aperture 508mm(20")
Focal Length Focal Ratio 2032mm f/4 (80")
Telescope Mounting Equatorial
They also have a 14" Meade LX200R
Optical Design Schmidt Cassegrain
Clear Aperture 356mm(14")
Focal Length Focal Ratio 3556mm f/10 (14")
Maximum Practical Visual Power 850X (14")
Telescope Mounting heavy-duty fork type; double-tine
Primary Mirror Lock included (progressivTHtension)
Zero Image-Shift Micro Focuser included (4-speed) All models
Viewfinder 8 x 50mm
GPS, True-level and North sensors included (16-channel GPS receiver)
Pointing Precision, High Precision Mode 1-arc min.
Autostar® II Hand Controller included (147,541 object database)
Slew Speeds: RA and Dec: 0TH1x to1.0x sidereal,
variable in0.01x increments; 2x, 8x,
16x, 64x, 128x sidereal;
1°/sec. to 8°/sec.,
variable in 0.1° increments
Tracking Rates sidereal, lunar, or custom-selected
from 2000 incremental rates
Primary, Secondary Mirrors Pyrex® glass grade-A
Correcting Plate/Lens Water white glass
Optical coatings UHTC