Planetary Cassegrain 400mm


Clear aperture – 400 mm;
Focal ratio – 20; Focal length – 8000 mm;
Central Obstruction – 21%;
Primary substrate – Supremax33 (special order); ULE glass (Quartz, Clearceram-HS) (standard);
Secondary substrate – Quartz;
Manual adjustments/collimation for both mirrors;
Primary cooling fans;
Primary mirror cage – Carbon Fiber;
Truss tubes – Carbon Fiber.


(approx.) – 1270 x 535 x 570 mm (includes focuser’s height);
Weight – 35 kg;
Back-focus from end of back plate – ~230 mm;
Focuser: 2” Feathertouch R&P or 2” Moonlite DC;
Focuser travel: 38 mm or 50 mm, depending on chosen focuser.


11 990 Euro, includes VAT 23%. Net export price – 9 748 Euro (non EU countries) – Supremax version – special order

13 990 Euro, includes VAT 23%. Net export price – 11 374 Euro (non EU countries) – ULE glass

  • prices of OTAs are subject to change without notice

Included accessories:

– shroud pack (secondary casing shroud, secondary cage shroud, truss shroud);
– side plates (pair);
– handle;
– primary mirror cooling fans;
– primary mirror hard cover;
– dew heater for primary mirror;
– dew heater for secondary mirror;
– 500 mm D-type dovetail;
– back-plate handles (set of 2).


*Because of high thermal inertia, present in thick Supremax33 mirrors, we highly recommend for 400 mm and bigger reflectors, the use of ULE glass for the primary mirror!


Number of units manufactured: 1
Units available for ordering: none, manufactured based on order.

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