ASA Astrograph N f 3,8

The N-Series Astrographs may be used for three different focal lengths, by using appropriately calculated correctors. The original focal length of the device is shortened by the 3" Wynne corrector, by a factor of 0.95, to f 3.6 . Given the matching corrector, the system can be shortened by a factor of 0.73 or extended by a factor of 1.8! As usual, in uncompromising quality! Hence, by buying the correctors, you get three telescope focal lengths with perfect picture quality united in one compact and lightweight telescope! With a few movements, the optic is adjusted in focal length and aperture ratio to the shooting situation! Example: An ASA Astrograph N 8"/f3.6 with 730 mm can also be used as 558mm f 2.75 or as 1380mm/ f 6.8 (see correctors).

New!
As of now we produce the 16” and 20” Astrographs as Truss tubes optional. This design enables a rapid adaption to the ambient temperature and decrease tube seeing. Furthermore the stiffness of the system increases at such size of optics.

ASA8N-OK3 f 3,6

Aperture: 200mm
Focal length: 720mm
Secondary: 90mm
Focuser: ASA-OK3
Corrector: 3KORRW
Image circle: 50mm
Tube: CFK-Sandwich
Price: EUR 4500,- excl. VAT and factory (Pricelist)

ASA10N-OK3 f 3,6

Aperture: 250mm
Focal length: 900mm
Secondary: 100mm
Focuser: ASA-OK3
Corrector: 3KORRW
Image circle: 50mm
Tube: CFK-Sandwich
Price: EUR 5400,- excl. VAT and factory (Pricelist)

ASA12N-OK3 f 3,6

Aperture: 300mm
Focal length: 1080mm
Secondary: 120mm
Focuser: ASA-OK3
Corrector: 3KORRW
Image circle: 50mm
Tube: CFK-Sandwich
Price: EUR 7450,- excl. VAT and factory (Pricelist)

ASA16N-OK3 f 3,6

Aperture: 400mm
Focal length: 1440mm
Secondary: 130mm
Focuser: ASA-OK3Z
Corrector: 3KORRW
Image circle: 50mm
Tube: CFK-Sandwich
Price: EUR 13750,- excl. VAT and factory (Pricelist)

ASA20N-OK3 f 3,6

Aperture: 500mm
Focal length: 1900mm
Secondary: 150mm
Focuser: ASA-OK3Z
Corrector: 3KORRW
Image circle: 50mm
Tube: CFK-Sandwich
Preis: EUR 24000,- excl. VAT and factory (Pricelist)

ASA20NG-OK3 f 3,6

Aperture: 500mm
Focal length: 1900mm
Secondary: 150mm
Focuser: ASA-OK3Z
Corrector: 3KORRW
Image circle: 50mm
Tube: CFK-Sandwich
Preis: EUR 25417,- excl. VAT and factory (Pricelist)