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2" 0.95× Coma Corrector

Category： Correctors/Reducers/Flatteners

Sharpstar 2" 0.95× coma corrector can be applied to most marketable Newtonian reflective astrographs.

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Product introduction

Sharpstar 2" 0.95× coma corrector can be applied to most marketable Newtonian reflective astrographs.

It’s of high quality and easy to use. Sharpstar 2" 0.95× coma corrector is designed for APS-C imaging circles(28mm), suitable for Newtonian reflectors with focal ratio between f/3 and f/6, and aperture size from 150mm to 600mm.

The reduction factor is 0.95×, thus it can reduce the original f/4, f/5 and f/6 respectively to f/3.8, f/4.75 and f/5.7, effectively shortening the exposure time. Besides, it can improve the star shapes. The diameter of stars in the center of the field can be limited within 10um.

Specifications

Specification
Application	150-600mm, f/3-3/6 parabolic reflectors
Reduction factor	0.95×
Image circle	44mm(maximum), 28mm(optimal)
Lens	triplet structure
Outer diameter	50.8mm(2")
Back focus	56mm(starting from the field-stop-ring to the focal plane)
Length	79.7mm
Coating	full-surface multi-layer coatings
Weight	0.22kg