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Post by Deleted on Apr 30, 2014 20:09:37 GMT
Hi All, Unfortunately the older we get the worst our eyesight becomes. Normally I have to wear two sets of glasses. One set for Distance and another set for reading (Including Computer Work). When I use the eyepiece on my telescope, I try to do it with the naked eye, for a while its great but after a while my eyes start watering. I have read quite a bit about Eye-Relief in optics, not sure if I understand it fully, but I recon its the distance you can hold your eye away from the Eyepiece.
As an example, I have a 10 mm eyepiece that came as standard with my first telescope. A celestron 114EQ. Trying it on my new scope a Nexstar 8SE is OK but it plays havoc with my eye. I would like to get a new one, but would all 10 mm give me the same problem. The standard eyepiece with the 8SE is a Plossl 25 mm which seems OK.
While eye comfort is important to me I wouldn't like to sacrifice quality for it. Perhaps you could recommend an eyepiece manufacture or two, or even a range of EP's that successfully combine the two. Thanks Pete
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Post by Deleted on May 21, 2014 8:04:46 GMT
Hi Scorp
I have a similiar problem - understand what you mean.
Struggling with the optical view is the reason for my interest in this forum, and my desire to give video astronomy a try!
And yup, you're right, long eye relief eyepieces should indeed help. I found a few Baader Hyperions secondhand, which have good eye relief, and if you have the budget something like Televue Delos or Panoptic, or Pentax SW would be very good options (in my rather limited experience!), as they also combine decent eye relief with wide apparent field of view. The majority of the Hyperion range can be adjusted for focal length by means of "fine tuning rings", so one eyepiece can give you a choice of lengths/powers. I think Skywatcher also now do a range that offers 70 degree AFOV with 20mm eye relief.
Hope that helps - best of luck!
Cheers Simon
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Post by davy on May 21, 2014 9:33:19 GMT
Welcome to the forum simon
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Post by Deleted on May 21, 2014 14:51:55 GMT
Many thanks!
Discovered this forum within the last 24 hours, and it's certainly a mine of useful info and guidance.
I guess I should introduce myself properly in the correct thread - will have a go at that this evening.
All the best S
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Post by Deleted on May 22, 2014 16:05:56 GMT
Hi Simon / Davy, Thanks for the tips. Like you (Simon) my eyesight is one of the reasons I am taking up Astrophotography. As it happens, yesterday I had an appointment with my Optician. I explained the problem I have (mentioning my hobby) and told him switching glasses in the dark is a problem. Anyway, he recommended that I try out 'multifocal contact lenses', they adjust the focus (Long / Short) to where you are looking. They are custom built to the individual, after an eye test, and they cost around £25.00, which lasts a month (although he told me that most people keep them for 6 months before changing). Simply take them out at night and put them in a cleaning solution. Sounds a good investment. BTW :: A warm welcome from me, also a newb here. Cheers Pete
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