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Glasses and observing at a telescope
- Silversurfer
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17 years 11 months ago #33746
by Silversurfer
Martin
You can lead a horse to water but a pencil must be lead
Glasses and observing at a telescope was created by Silversurfer
I wear glasses for short sightedness with a very mild degree of astigmatism. I normally look through the ep without my glasses as using them is uncomfortable, allows in lots of stray light, makes it difficult to keep my head still and causes blackouts.
It is a pain to having to continuously take them off/ put them on when swapping between the ep and the finder scope. Another draw back is that anyone with 20/20 vision (e.g. SWMBO) has to refocus to view anything after me on the telescope.
What do other "four eyes" do, take them off or keep them on ( I'm still talking about glasses here )?
Is there any simple way to change the focus on a finder scope to suit viewing without glasses?
It is a pain to having to continuously take them off/ put them on when swapping between the ep and the finder scope. Another draw back is that anyone with 20/20 vision (e.g. SWMBO) has to refocus to view anything after me on the telescope.
What do other "four eyes" do, take them off or keep them on ( I'm still talking about glasses here )?
Is there any simple way to change the focus on a finder scope to suit viewing without glasses?
Martin
You can lead a horse to water but a pencil must be lead
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- Johnno
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17 years 11 months ago #33747
by Johnno
Kildare Astronomy Society
www.kildareastronomy.com
Replied by Johnno on topic Re: Glasses and observing at a telescope
Hi Martin
I have the exact same eyesight problems as yourself.
The finder was a real pain so I then got a telrad.
This was only a small improvement.
I then got a laser pointer with a mounting bracket from North Down Telescopes. So I just "calibrated" the pointer position in the bracket and all works well.
Now it's simply turn on the laser pointer and point and the object is always in the FOV at the eyepiece.
Hope this helps
Johnno
I have the exact same eyesight problems as yourself.
The finder was a real pain so I then got a telrad.
This was only a small improvement.
I then got a laser pointer with a mounting bracket from North Down Telescopes. So I just "calibrated" the pointer position in the bracket and all works well.
Now it's simply turn on the laser pointer and point and the object is always in the FOV at the eyepiece.
Hope this helps
Johnno
Kildare Astronomy Society
www.kildareastronomy.com
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- dmcdona
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17 years 11 months ago #33749
by dmcdona
Replied by dmcdona on topic Re: Glasses and observing at a telescope
Martin - try Televue. the have a new eyepiece accessory (Dioptrix) designed for eye-glass wearers. Reviews I have seen rave about them.
www.televue.com/engine/page.asp?ID=258
Cheers
Dave
www.televue.com/engine/page.asp?ID=258
Cheers
Dave
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- DaveGrennan
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- IFAS Astronomer of the Year 2010
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17 years 11 months ago #33756
by DaveGrennan
Regards and Clear Skies,
Dave.
J41 - Raheny Observatory.
www.webtreatz.com
Equipment List here
Replied by DaveGrennan on topic Re: Glasses and observing at a telescope
I also have heard great things about the tele-vue dioptrix.
Regards and Clear Skies,
Dave.
J41 - Raheny Observatory.
www.webtreatz.com
Equipment List here
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- Johnno
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17 years 11 months ago #33757
by Johnno
Kildare Astronomy Society
www.kildareastronomy.com
Replied by Johnno on topic Re: Glasses and observing at a telescope
The "Dioptrix" will AFAIK work only with certain Televue E/P's.
It is not suitable for Meade plossl's or many other e/p's.
Furthermore, these are specific for a given level of astigmatism. You must give your specific astigmatism level if you order one.
Might be ok if you only have Televue e/p's and do all your observing by yourself.
Johnno
It is not suitable for Meade plossl's or many other e/p's.
Furthermore, these are specific for a given level of astigmatism. You must give your specific astigmatism level if you order one.
Might be ok if you only have Televue e/p's and do all your observing by yourself.
Johnno
Kildare Astronomy Society
www.kildareastronomy.com
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- michaeloconnell
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17 years 11 months ago #33759
by michaeloconnell
Replied by michaeloconnell on topic Re: Glasses and observing at a telescope
I'm not terribly knowledge on astigmatism, but isn't this a different condition to myopia (nearsightedness)?
i.e. if you need glasses to correct myopia only, then the televue product is of no use?
i.e. if you need glasses to correct myopia only, then the televue product is of no use?
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