8
Care and Cleaning of
the Optics
Do not disassemble the Ritchey-Chrétien for any reason,
including to clean the mirror. A small amount of dust and par-
ticulates on the mirror’s surface will not affect performance. In
the event internal cleaning is necessary the telescope should
be shipped to Orion Telescopes and Binoculars for service.
This telescope does not contain user-servicable parts and
disassembly of the components will void the warranty. When
not in use, please use the supplied dust cap(s) to keep dust
and particulates out of the tube and off the optics.
Specifications
6" f/9 Ritchey-Chrétien
Optical configuration
Ritchey-Chrétien
Figure
Hyperbolic
Mirror material
BK-7
Mirror Coating
Enhanced, no less than
94% with SiO
2
Overcoat
Focuser
Machined Aluminum
Dual-Speed (10:1) Linear
Bearing Crayford
Accessories
Accepts 2" & 1.25"
Baffles
8 knife-edge baffles
Optical Tube
Steel
Aperture
150mm (6”)
Focal Length
1370 mm
Focal Ratio
f/9
Secondary Mirror Minor Axis 67mm
Length
406mm
Diameter
193mm
Weight
12.4 lbs.
Specifications:
8" f/8 Ritchey-Chrétien
Optical configuration
Ritchey-Chrétien
Figure
Hyperbolic
Mirror material
BK-7
Mirror Coating
Enhanced, no less than
94% with SiO
2
Overcoat
Focuser
Machined Aluminum
Dual-Speed (10:1) Linear
Bearing Crayford
Accessories
Accepts 2" & 1.25"
Baffles
10 knife-edge baffles
Optical Tube
Steel
Aperture
200mm (8")
Focal Length
1600mm
Focal Ratio
f/8
Secondary Mirror Minor Axis 90mm
Length
476mm
Diameter
230mm
Weight
15.9 lbs
