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Old 30-04-2013, 06:14 PM
ausastronomer (John Bambury)
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Quote:
Originally Posted by barx1963 View Post
although the eye relief is only 3mm more in the Ethos, 15mm as against 12mm, for a glasses wearer that is significant.

Malcolm
Hi Malcolm,

I can't quite agree with this comment. While the ETHOS have 3mm more eye relief than the Nagler T6's, it is still inadequate for use with eyeglasses IMO. It would be less than 1 eyeglass wearer in 50, who can use the TV ETHOS with eyeglasses; and take in the full FOV. So for eyeglass wearers, it isn't significant, it's a very moot point in fact. However, the extra 3mm of eye relief does provide more comfort for non eyeglass wearers.

The useable eye relief of all Televue eyepieces is in my experience less than what is stated by Televue. I believe Televue measure the eye relief from the top of the eye lens. Practically however you can never get your eye this close to the eye lens.

Cheers,
John B
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