Coma Correctors

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Accessories / Visual and Everything ElseComa Correctors
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Coma Correctors
In a reflecting telescope, coma makes stars at the edge of the field look like blurry comets whose tails point out radially from the center of the field. All parabolic mirrors used in Newtonian reflecting telescopes are limited in field sharpness due to coma. The faster your telescope's focal ratio, the worse the effect. Even a perfectly made 13" f/4.5 parabola has a diffraction limited field that’s only about 0.1° across.

Coma correctors are auxiliary lens systems that reduce the coma at the edges of the field to provide images that are sharp across the entire eyepiece or photographic field. You no longer have to constantly shift your scope to keep objects centered for sharp viewing.

The TeleVue coma correctors below can be used with any reflecting telescope and any eyepiece, although TeleVue eyepieces are recommended because of their excellent edge correction. The Vixen coma corrector is specific to the particular Vixen reflector listed.

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Astro-Tech photo-visual Coma Corrector and field flattener for fast focal ratio Newtonian reflectors
 
Astronomy Technologies - Astro-Tech photo-visual Coma Corrector and field flattener for fast focal ratio Newtonian reflectors 
Our Product #:  ATCC

Back-OrderedTemporarily out of stock; will charge and ship when available.
The Astro-Tech Coma Corrector is a photo/visual auxiliary lens system that fits into the 2" focusers of all f/3.5 to f/6 Newtonian reflectors to drastically reduce coma and curvature of field in visual observing and astrophotography . . .

More details . . . ] 


$135.00




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Paracorr Type 2 photo/visual
 
TeleVue - Paracorr Type 2 photo/visual 
Our Product #:  PARA2
TeleVue #: VIP-2010

In StockUsually ships within one business day.
The TeleVue Paracorr Type 2 photo/visual coma corrector drastically reduces the coma and curvature of field of all Newtonian reflectors and large aperture "no ladder" Dobsonians with focal ratios as fast as f/3 . . .

More details . . . ] 


$520.00
List Price: $625.00




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