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APM 2" 24mm Ultra Flat Field UF Telescope Eyepiece 65 Degree AFOV
$ 92.4
- Description
- Size Guide
Description
APM 2" 24mm Ultra Flat Field Eyepiece - Excellent Condition!The 2" Ultra Flat Field Eyepiece features a high quality standard and a very compact design, which is designed to remove the field curvature at the edge, resulting in a flat, distortion-free image up to the edge of the visible field of view, even in very fast telescopes. The eyepiece has over sized eyepiece lenses for the largest possible field of view – also suitable for spectacle wearers, the eye-rubber allow a comfortable view.
All lenses have a broad-band-multi-coating (FMC) and blackened lens edges.
The barrel is equipped with a thread for 2" filters.
We bought this very gently used eyepiece from Meade. It is in excellent condition. Comes with both caps & the box. This is a very nice, high quality eyepiece!
Price includes USA shipping
We ship promptly, usually the same day - check out our feedback
Thanks!
inkfrog terapeak
This is a very popular focal length / Low-Power eyepiece that I make as a budget eyepiece using the same lenses that are found in eyepieces with the smaller diameter 1.25" barrels. The original eyepieces use the larger diameter lenses, but the manufacturers placed them above the smaller 1.25" barrel because the 1.25" is a more popular size. The smaller 1.25" barrel chokes the afov down so much ( below 40 degrees ) that they simply don't perform as well as using the same lenses in a 2 inch barrel.
This is a NEW version using higher quality XL lenses that make a big difference in performance and appearance. The new lenses have beautiful multi coatings & blackened edges to improve contrast and help eliminate the "ghosting" effect of standard lenses. This *budget 2 inch 40mm Plossl may be the best dollar value out there in a 2 inch eyepiece.
Russell Optics puts them into a 2 inch housing to make this budget 40mm Super- Plossl with 20mm eye relief and is threaded for standard 2 inch filters. The lenses are coated with anti-reflective material to reduce glare and stray light, but at the same time allowing as much light through as possible. This yields a brighter image in smaller telescope ( up to 8 inch diameter ). When the lenses are in the larger housing and 2 inch barrel it opens up the afov drastically to 55 degrees afov making it a much better performer. This is by far the least expensive way to build a low-power, budget-minded 2 inch eyepiece using all new components. These make great star-party eyepieces, and a great gift idea for that budding astronomer on a budget.
*Please note.....on Telescopes with a central obstruction ( Like SCT's, Maksutov's, or Newtonians ) a basic rule of thumb is to keep the magnification above about 35x. Once you go below 35x you stand a chance of losing contrast. If your obstruction is larger than 25% of the primary you could also get a "ghost" image of that secondary mirror.
If you have any questions or concerns I will gladly help you make the correct choice for your particular choice. Since Ebay no longer allows phone numbers or addresses in the ads ( I have NO idea how all the others are getting away with it ) You can get a hold of me at Russell Optics & Machine in Arizona , or try clicking the blue & red "ME" link next to our feedback.
S&H in the 48 states is for US Mail. Outlying areas .50.***
I ship ONLY within the USA, No foreign bids , PLEASE !!
Paypal payments are preferred , for other options please contact me for other options.