Astrophotography forum > Eyepieces Questions & Recommendations

Recommendations for a max TFOV EP for 6" f/5 reflector 1.25" barrel?

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calbeyrefrows:
I've recently acquired a classic eq-mounted Meade 6" f/5 reflector and am loaning my prior nexstar slt130 (operated as guide alt-az because motors no-worky) to great friends who are interested in astronomy but don't have a telescope.  On my old range I had the red-dot finder along with an AT Titan 32mm which were really helpful for scanning the skies and searching DSO.  On the new scope I have a barely functioning 6x30 directly finder and a 25mm Meade plossl (or even kellner?  or other?  Not sure... it is one of 2 EPs that came originally bundled with the extent in the late 80s.) .  Star hopping is not as pleasurable using the new range and I am shopping for a few updated parts to enhance the performance with this new setup.  I am planning to acquire an 8x50 RACI and maybe a cheap red-dot pointer, but I would also like to obtain an EP that will give me max or near max TFOV (so 2 a hair)  I am always working on a strict budget.

The obvious choice is a 32mm Plossl, and I will likely get one, but I am also considering shorter FL, wider AFOV choices.  I truly liked the 70* AFOV of my Titan in spite of the fact that things got a little soft at the borders.  I am also considering the fact that I really do 95% of my observing out of my driveway at a red, bordering on white zone using a horrendous streetlight shining straight on me.  There's hardly any opportunity for me to become really dark-adapted when I am viewing from home, so I am thinking the 6ish mm exit pupil from a 32mm EP will probably be squandering aperture the majority of the time anyway.

And so, I am considering an ES 24mm 68*, but it is stretching my budget and they are rarely available.  Hyperion 24mm, however, it is even more expensive and doesn't get the maximum favorable press.  Then you will find the 60* EPs.  Maybe a 25mm Starguider/HD-60?  Are there other budget choices available that I might not be aware of?  Any suggestions/advice considering my equipment and observing conditions?  Thanks!

Zachary Tenk:
TV Panoptic 24mm and ES68 24mm are the generally recommended lower focal length options to a 32mm Plossl. They are well corrected high performance ep's that will likely outperform the others you reference.
But the Astro-Tech Paradigm Dual ED/Agena Starguider Dual ED ep's are very good values through they have considerable more narrow AFOV's.
You might wait until you get your RDF up and running. I fond them very effective on widefield scopes and yours may solve your problem.

falkwinsliche:
Still stretching your budget, but after getting the 32mm plossl, consider the 20mm ES68....excellent eyepiece, probably still in stock somewheres with a bit of looking, and could probably find a used one.

biocaunico:

--- Quote ---I would get a TV 32mm plossl. It will handle the f5 focal ratio better. Excellent examples come up in the classifieds frequently.
-Rob
--- End quote ---
Why do you think a Plössl gets better if it's from TeleVue?

cesconali:

--- Quote ---
--- Quote ---I would get a TV 32mm plossl. It will handle the f5 focal ratio better. Excellent examples come up in the classifieds frequently.
-Rob

--- End quote ---
Why do you think a Plössl gets better if it's from TeleVue?
--- End quote ---
Well, what I understand is that they take more care with some things like baffling and blacking that leads to better contrast than cheap plossls, but I'm sure televue isn't the only brand that makes good ones.

Are there any available for under $100 (preferably well under and preferably available new) that stand out as better than others?

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