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Explore Scientific HR Coma Corrector

£267.00

Quick Overview

The Explore Scientific ES HR Coma Corrector is one of the highest quality units available on the market today. This system is disigned to work on Newtonian telescopes down to an amazing f/3 focal fatio and provides excellent field correction, dramtically diminishing the effects of coma, field curvature and astigmatism.
0510330
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Details

The Explore Scientific ES HR Coma Corrector is one of the highest quality units available on the market today. Its four element design yields a superbly corrected field with coma correction right to the edge of the field. This system is designed to work on Newtonian telescopes down to an amazing f/3 focal ratio. The Explore Scientific Coma Corrector has a 2" integrated helical focuser which allows the adjustment of spacing between the corrector's rear element and eyepieces or an imager's sensor plane - eliminating (in many cases) the need for the need to invest in additional spacer rings to acheive optimal results.


To use the HR Coma Corrector visually, you need to have at least 32mm spare inward travel at your focuser. Photographically, the Explore Scientific ES HR Coma Corrector shifts the focus outward by about 35mm - if you have no problem focusing your camera at prime focus, this unit should work without the need for extension tubes or modification.  However, we have noted that the use of this Coma Corrector with certain Canon cameras benefits from the provision of the low profile 0510362 Explore Scientific T2 Ring Canon, which adds a little more in focus travel for Canon DSLRs for certain telescopes.  Please contact us for confirmation if you're unsure of your telescope and camera configuration.


Specifications:


2" fitting
Mitigates or eliminates coma, field-curvature and astigmatism in Newtonian Telescopes
Diffraction limited performance on axis and in the field
Flattens the field
Works on a wide variety of focal lengths, down to f/3
Four-lens construction
Supplied with 1x T2 M42 (0.75tpi) thread adapter and 1x M48 (1.00tpi) thread adapter

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