Ritchey - Chretien 500 - 600mm

Availability: manufactured on request; Type: reflector

Our line of Ritchey-Chretien reflectors is designed to offer non-compromising imaging quality, by integrating everything needed in a package containing high-quality hand-figured optics, top-quality finish & mechanics.

Main features:
* hand-figured Ritchey - Chretien optics
* precision adjustment of primary & secondary mirror
* portable, medium size reflector telescope
* truss type chassis design for quick cool down
* carbon fiber and aluminium alloy high quality construction.

Specifications & technical data:
Clear aperture – 500 mm; Focal ratio – F/8; Focal length – 4000 mm; Central Obstruction – 50%, linear
Clear aperture – 600 mm; Focal ratio – F/8; Focal length – 4800 mm; Central Obstruction – 50%, linear
Primary substrate – Fused Silica/Quartz
Secondary substrate – Fused Silica/Quartz
Primary mirror cage material – Carbon Fiber
Truss tubes material – Carbon Fiber.

Dimensions:
144 x 71 x 75cm (L x W x H; considers handle, dovetail & focuser added height/length)
Weight: 63 kg
Usable back-focus: ~270 mm, from back-plate
Usable back-focus: 89 mm, from corrector's housing to focal plane.

Pricing (last update in 2021):
RC500 F/8 39,900 Euro, including VAT 23%. Net export price – 32,439 Euro (non-EU countries) – Fused Silica/Quartz or Clearceram/Zerodur version
RC600 F/8 53,900 Euro, including VAT 23%. Net export price – 43,821 Euro (non-EU countries) – Fused Silica/Quartz or Clearceram/Zerodur version
* No new orders accepted - see link on homepage *

Included items:
– 3.5" Starlight Instruments focuser, rack and pinion, 38mm travel
– Electronic focusing package for secondary mirror or Electronic focuser control (motor with integrated controller, from Optec)
– Field Corrector, 60mm corrected circle diameter
– shroud pack (secondary casing shroud, secondary cage shroud, truss shroud)
– side plates (pair)
– riser + finder shoe (Starlight FSB-CH)
– primary mirror cooling fans
– primary mirror heater
– primary mirror hard cover
– secondary mirror heater
– 500 mm D-type dovetail (Losmandy)
– handle
– back-plate handles pair
– Dual controller for primary's heater and fans (manual control).

Coatings:
standard coating reflectance: 92% (SiO overcoat), included in the price.
optional enhanced coating reflectance: 96% (TiO overcoat) - please inquire for availability and pricing.

Optional accessories to consider when ordering:
Dovetail, D-type (Losmandy) = TBC
Electronic focusing package for secondary mirror (Armadillo Seletek controller, Hybrid Linear motor) = 890,00 Euro, including VAT 23%; Net price = 724,00 Euro
Electronic focuser control (motor with integrated controller, from Optec) = 660,00 Euro, including VAT 23%; Net price = 537,00 Euro
Electronic focuser control (motor + controller, from Starlight instruments) = 890,00 Euro, including VAT 23%; Net price = 724,00 Euro.

Visual accessories:
A prism or mirror diagonal will be needed, together with good quality eyepieces, to be able to extract the most of your new telescope.

Imaging accessories:
We can manufacture adapters and extensions to suit one's observing and/or imaging needs.

Number of units manufactured/ordered: 3
Units available for ordering: manufactured based on order.
Delivery time from order (approximative): 12 - 15 months.

* Prices subject to change without notice.

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