Ritchey-Chrétien 300mm F/8

Characteristics:

Clear aperture – 300 mm;
Focal length – 2400 mm;
Primary substrate – fine annealed Supremax33; Quartz/Clearceram-HS/Zerodur (special order);
Secondary substrate – Quartz or fine annealed Supremax33;
OTA type – Serrurier Truss;
Aluminium alloy used – Type 70xx for plates; Type 60xx for anodized elements
Primary mirror cage – Carbon Fiber;
Truss tubes – Carbon Fiber.

Dimensions:

830 (L) x 400 (l) x 400 (h) mm (might differ slightly, depending on extra items chosen);
Weight – 18 kg;
Back-focus from end of back plate ~ 230 mm;
Connection thread on the back plate adapter: M117x1 – male.

Included in the price of the OTA :
*D-type (Losmandy) dovetail, 400 mm long;
*upper handle or second dovetail (can be either D-type or V-type; Customer’s choice), 250 mm long;
*side plates for increased stiffness;
*finder bracket + riser;
*precision adjustment knob for secondary mirror with 0.5-mm or 1-mm travel per full turn, Customer’s choice;
*precision tilt knobs for primary mirror with 1-mm travel per full turn;
*primary mirror fans (RCA connector);
*primary mirror dew heater (RCA connector);
*secondary mirror dew heater (RCA connector);
*Lycra truss covers, set of 3 (three). Front, secondary case and truss cover;
*aluminium cover for primary’s cage;
*Field Corrector, corrected field is ~52 mm;

Pricing :

7500 Euro, includes VAT 23%. Net export price – 6098 Euro (non EU countries) – Supremax33 primary

9225 Euro, includes VAT 23%. Net export price – 7500 Euro (non EU countries) – Quartz/ClearceramHS primary – special order

  • prices of OTAs are subject to change without notice

Optional items :
*flight case – 600 Euro, including VAT; Net price – 488 Euro.
*soft case – 220 Euro, including VAT; Net price – 179 Euro.
*focuser – various choices; please inquire for pricing.
We recommend FTF3215 as it can receive without any adaptation, using its draw tube M86 female thread, our Field Corrector.

Start typing and press Enter to search