IN STOCK! The ultimate 5" F/10 Maksutov-Cassegrain. The preferred choice for high-end applications worldwide. Moving primary focussing. Mirrors 95% reflectivity, Meniscus lens fully multi-coated. Internal aluminium knife-edge baffle rings. Rear cell threaded to accept any SCT accessory. Padded case included. Passive cooling system around meniscus. Cream-white painted tube. Available in black to special order.
Specifications:- Clear Aperture - 127 mm
- Focal length - 1270 + 100 mm
- Focal ratio - F/10
- Back Focus - 30 - 220 mm
- Photographic field of View - 10 54'
- Tube diameter - 173 mm
- Tube length - 370 mm
- Tube weight - 3.4 kg
- Max. useful magnification - 2x per mm aperture
- Reflectitivity of mirrors - 95%
- Central obstruction - 34%
- Optical quality (for wave length 0.63 μm) - Minimum 1/6th wavefront error
- RMS - 0.041
- Body parts material - aluminium
- Primary and secondary mirrors material - K7, LK5 (Pyrex) with reflective aluminium coating and SiO2 protected
Delivery Set: Optical Tube Assembly, soft carrying case.
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