2" 0.95× Coma Corrector

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

Video

Images

2" 0.95× Coma Corrector

2" 0.95× Coma Corrector

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