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ASA 8H-OK3 8" F2.8 Hyperbolic Astrograph - LOWER PRICING!

ASA 8H-OK3 8" F2.8 Hyperbolic Astrograph - LOWER PRICING!

can be shipped within 90-120 days

Price includes VAT, plus delivery

ASA Astrographs – High Quality, Stable, Perfect

ASA Astrographs have been developed with the help of experience from some of the leading astrophotographers of our time. The correctors are designed by Dipl. Phys Philipp Keller and have been perfected by use of high end materials. ASA Astrographs offer perfect image performance over a large field of view, are lightweight but stiff and have very fast focal ratio.

The tube is produced using high grade carbon fibre with internal velvet flocking. The carbon construction offers very low thermal expansion and great rigidity. This ensures that focus is very stable and there is no detectable tube flexure. As standard, the telescope is supplied with the OK3 3" Motorised focuser which has a load capacity of 6kg.

The ASA Astrograph has a very fast focal ratio. This offers good signal to noise ratio with short exposure times. Through the uncompromising optical design of Philipp Keller, the corrector lens system deployed can handle large format sensors. Even the largest sensors will have perfect correction all the way to the corners.

The H-Series Astrograph employs a hyperbolic primary mirror and a fixed integrated corrector. This provides an F2.8 focal ratio and large 60mm corrected field. The additional correction provided by the use of Hyperbolic mirror provides incredible image sharpeness and resolution.

All ASA Astrographs are manufactured from superior Suprax glass and polished to an accuracy of P/V = 1/7 Lambda. The coating is an advanced aluminium coating employing enhanced multi-layered overcoats to increase the reflectivity of telescope mirrors to 97% over a wide range of the visible spectrum. All secondary mirrors are made to the same specification.

On request, premium Astro-Sital zero expansion ceramics polished by LOMO Optics can be ordered.

Professionally Qualified

Wide field pictures of the night sky can be made very quickly and in high resolution with the H Series. This fact made the 8-inch hyperbolic ASA Astrograph the telescope of choice for the professional Super Wasp II project, a program for the search for EXO-planets, which is supported by eight universities, including the Universities of Geneva, Leicester, Queens Belfast, Warwick and the German Space Agency DLR at Berlin. Twelve hyperbolic ASA Astrographs work in a park in the immediate vicinity of the VLT at Paranal in Chile.

Aperture 200mm
Focal Length 560mm
Corrector Internal
Secondary 100mm
Focuser OK-3Z Motorised inc Software
Tube Length 556mm
Tube Diameter 255mm
Weight (Inc Focuser) 9.1kg
Corrected Field >52mm


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