Quote:
Originally Posted by ausastronomer
The reason I chose the 14mm Pentax XW over the ETHOS is solely on the basis that the ETHOS does not have enough eye relief for me to use with glasses on. For people who don't wear glasses I would substitute the 13mm ETHOS for the 14mm Pentax XW.
For people with smaller and or different design based telescopes, the above may change drastically.
Cheers,
John B
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Hi John, all,
Sorry to sidetrack from the topic but you seem to have a good knowledge of eyepieces all round....
On the subject of wearing glasses, what exactly, in layman's terms, would
having to wear glasses mean to using eyepieces in general?
I have just entered my forties and recently found that what I thought was
exceptional 20/20 vision is now on a slow, gradual, typical deterioration
of a 40 plus person.
This is obviously frustrating at times and especially so when observing.
I find I have to sway between about 1.5 diopter cheapie $2 shop glasses
to read the monitor and see stars as pinpoints, to taking them off to
look through the eyepiece.
I have recently had my eyes tested and was told I have the raw deal out of
the two typical diagnoses.
I need glasses now for reading, and I also need a slightly different diopter
for distance vision.
(The second diagnosis is: need glasses for reading and NO glasses needed
for distance....that deficiency kicks in later in life, typical late 40s).
When you mention eye relief are you talking about how good an eyepiece
would be for using glasses?
I thought eye relief meant, you can wobble around quite a bit near the
eye-cup and not get horrendous vignetting and distortion?
regards,
Steve B.