Image of the day

Captured by
Michael Scherman

Lagoon and Triffid Celestron C6 Hyperstar4

My Account

New to Astromart?

Register an account...

Need Help?

Affordable Planetary Eyepieces

Started by pjbilotta, 09/12/2002 04:06PM
Posted 09/12/2002 04:06PM Opening Post
While my 5mm ortho has performed admirably, I need something with longer eye relief in the 7-10mm range that will provide comparable sharpness and contrast for primarily planetary observing. Is there anything affordable ($50-$100) out there that might accomplish this for me other than high end Tele Vue, Ziess and others that I can't possibly afford?

Thanks for your recommendations.
Posted 09/12/2002 04:29PM #1
Yes, try the new Orion ED-2 at 9.5mm ($69) and/or Barlow a longer EP that has decent eye relief.
Posted 09/12/2002 09:22PM #2
My advice is to get a TeleVue 3x Barlow and
then a University Optics Ortho that works out
to whatever focal length you need. In my
experience this gives performance close to
high-end Pentax / Zeiss orthos, more eyerelief,
and at a small fraction of the cost. - John B.
Posted 09/12/2002 09:58PM #3
Check out the eyepiece reviews on http://www.excelsis.com

I have tried many eyepieces and tend to very much agree with the ratings there.
Posted 09/13/2002 01:42PM #4
Thank you all for some excellent advice. Quite a lively discussion.

It sounds like barlowing an already excellent planetary like an 7-9mm ortho or RKE may be the best solution for increased eye relief for those of us on a budget with fast scopes (mine's a 6" f/5). They lead to two additional questions . . .

Does anyone have any experience with the 5mm Ultrascopic versions that already have a barlow built in, yielding the eye relief of a 10mm. Does this perform better or worse than using a separate barlow.

And second . . . the best barlows for this application?

Thanks again!

Posted 09/18/2002 05:28PM #5
I would go with the high eye relief eyepieces from "Hands on optics" There cheap, have 20mm of relief, provide a good image, and are made by Anteres, I believe, at least that is what I was told on the phone, when I called them. All sizes also on ebay.