Askar PHQ151 APO Refractor (151 mm Quintuplet f/7) – Dark Clear Skies IMX462 Camera Working principle

Working principle

Technical Data

There is an ever-growing demand for filters suitable for extremely fast optical systems like Celestron’s RASA and Takahashi Epsilon Astrographs

Never point an unfiltered telescope at the Sun

0 nm series delivers even better performance than previous 3

Askar PHQ151 APO Refractor (151 mm Quintuplet f/7) – Dark Clear Skies IMX462 Camera Working principleThe Askar PHQ151 is a flagship 151 mm f 7 quintuplet APO astrograph built for serious deep sky imaging. With its native flat field design, this instrument produces razor sharp stars across full frame and large format sensorsno flattener required. Key features Huge aperture: 151 mm of light gathering power. Flat field: Petzval inspired quintuplet design eliminates field curvature. Focal length: 1057 mm at f 7, perfect for galaxies and smaller nebulae.