2″ coma corrector for Newton x0.95 (f/3 to f/6)

Coma Corrector 2" 0.95× Sharpstar

The Sharpstar 2" 0.95× coma corrector is a high-quality accessory specially designed to improve the sharpness of images obtained with Newtonian reflector astrographs. It is ideal for users of Newtonian telescopes who wish to correct coma at the edges of the field and enjoy precise, uniform stellar imaging.

Compatibility with Newtonian telescopes

This corrector is compatible with a wide range of Newtonian telescopes with focal ratios between f/3 and f/6, and apertures from 150 mm to 600 mm. It is specially optimized for APS-C format (28 mm) image circles, making it an excellent choice for astrophotographers using sensors of this size.

Technical features and benefits

This model offers a reduction factor of 0.95×, enabling the initial focal ratio to be reduced (for example, an f/4 becomes an f/3.8). By reducing the focal ratio, it shortens the exposure time required and improves the shape of stars across the entire field of view, limiting the diameter of stars in the center of the field to less than 10 microns.

• Application: Newtonian telescopes from 150 to 600 mm aperture, with f/3 to f/6 focal ratio
• Reduction factor : 0.95×
• Image circle : 44 mm (maximum), 28 mm (optimal for APS-C)
• Lens design : Triplet structure for effective correction
• Outside diameter : 50.8 mm (2 inches), compatible with standard 2-inch eyepiece holders
• Back-focus : 56 mm (measured from field ring to focal plane)
• Total length : 79.7 mm
• Coating : Multi-layer for optimum light transmission
• Weight : 0.22 kg

Why choose the Sharpstar 2" 0.95× Coma Corrector?

This corrector is an ideal choice for astronomers with Newtonian reflectors who want to perfect their images. Its design allows easy installation in most 2" eyepiece holders, and the 56mm back-focus is compatible with many imaging accessories on the market. With its triplet design and multi-layer coatings, it guarantees clear images, without glare or loss of contrast.

In short, Sharpstar's 2" 0.95× coma corrector is an essential accessory for all astrophotographers looking to optimize the quality of their images with Newtonian telescopes, by improving star sharpness and reducing the exposure time required.