Author Topic: New Eyepieces  (Read 208 times)

Joe Wellard

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Re: New Eyepieces
« Reply #30 on: February 09, 2018, 08:51:22 AM »
Sorry to jump in so late on the subject. FWIW one of my telescopes is a 127mm f/12 Maksutov. Kinda-sorta what you have. I agree with Dave about exit pupils. My high power eyepiece is a 7mm focal length giving me 220x but an exit pupil of less than 0.6mm. which besides letting me see good detail of the object I have to share it with lots of floaters in my eyeball.

Sorry to say the Maksutov just isn't a wide field telescope. Here is what I use with my Mak YMMV

Low Power 24mm TV Panoptic - In your case go with the Explore Scientific 24mm 68 degree-Almost as good at half the price

Medium Power - 15mm GSO Superview 68 degree - 45 bucks. It will work great in your scope/ works great in mine.

Hi Power - 7mm Nagler - Great eyepiece but $$$. Instead I would recommend an 8mm Padigram or Starglider. Not as good as the TV but still a really decent eyepiece at 60 bucks

That is just a suggestion so Feel free one nice thing about a f/12 scope it that you don't need mega $$$$ eyepieces.

Marquez Faulkner

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Re: New Eyepieces
« Reply #31 on: February 09, 2018, 09:10:28 AM »
With many of the telescopes that I own or use, I rarely use even a 1mm exit pupil for planetary observing. For example, the 17" f/15 classical Cassegrain at the Naylor Observatory produces a magnification of 432x at a 1mm exit pupil.
Not too long ago I did happen to employ an eyepiece which produced an exit pupil of less than 1mmin the ASH 17" classical Cassegrain, namely a 14mm Explore Scientific 82 degree. This eyepiece yielded 463x and an exit pupil of 0.9mm. The reason I used the 14mm ES was to get a better look at the Type Ia supernova in NGC 4125, SN 2016coj. I could see the supernova at 324x (20mm ES 70 degree) but using 463x really made itpop out. Mitsky