$Askar 91F APO Refractor (91 mm f/5.6 Flat-Field) – Dark Clear Skies Askar PHQ65 Integrated Rotation Mechanism: Adjust brightness$

Askar 91F APO Refractor (91 mm f/5.6 Flat-Field) – Dark Clear Skies Askar PHQ65 Integrated Rotation Mechanism: Adjust brightness

Name: Askar 91F APO Refractor (91 mm f/5.6 Flat-Field) – Dark Clear Skies Askar PHQ65 Integrated Rotation Mechanism: Adjust brightness
Brand: actil.am
SKU: 51053709285
Price: 497.50 USD
Availability: InStock
Rating: 4.2421 (15 reviews)

SKU: 51053709285

4.2

USD497.50 USD546.50

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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15

Description

Integrated Rotation Mechanism: Adjust brightness with polarizing filters

adjustable squelch levels

the DC port can connect to DSO cooled cameras

4GHz generally offers better range

Askar 91F APO Refractor (91 mm f/5.6 Flat-Field) – Dark Clear Skies Askar PHQ65 Integrated Rotation Mechanism: Adjust brightnessAskar 91F Flat Field APO Astrograph The Askar 91F is a powerful 91 mm f 5. 6 flat field apochromatic refractor designed for deep sky astrophotography. With its FRA series Petzval optical design, the 91F delivers a native flat field and pinpoint stars across APS C and full frame sensors without needing an additional field flattener. Key features Aperture: 91 mm APO optics with ED glass. Focal length: 500 mm at f 5. 6 balanced between wide field and

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