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Вот они по сто баксов вообщеhttp://www.telescopes.com/telescope-eyepieces/2-inch-eyepieces/zhumellz1009mmeyepiece.cfmЭто не ES.
Цитата: dont_panic от 25 Янв 2014 [18:15:49]Вот они по сто баксов вообщеhttp://www.telescopes.com/telescope-eyepieces/2-inch-eyepieces/zhumellz1009mmeyepiece.cfmЭто не ES. Почему не они? Очень может быть что они, В такой же обрезинке еще продаются под маркой TMB.А цена пусть не смущает. Мид тоже иногда устраивает хорошие акции, до 50% скидки и более.
Had these out again last night. It was interesting. I put them in the focuser first and was quite happy with thier performance. Never having used a 100 degree eyepiece I am having fun with these. However, once I swap to a nagler, nikon, or pentax XW and go back to the Zhumell Z100, I notice some things. The focus is softer than the Nagler, Nikon, or Pentax (which just seem to snap into focus). With the Z100, I seem to have to fool with the Focus more than the others. While a nice view, I am unable to obtain the level of tack sharp views the Nagler, nikon or pentax give. One nice thing is they are not too heavy and weigh about the same so swapping them in and out is not a problem with balance. Also not quite the contrast as the others. Again contrast is pretty good...just not up to the level of a super premium eyepiece. Not yet sure if they find a permanent place in my eyepiece case...but they have possibilities....
I had a chance last year to do a side-by-side comparison of an Ethos 17mm with a Zhumell 16mm 100 degree eyepiece, using a William Optics ZS 105 triplet. I posted my comparison in another thread a few days later, and the conclusion was the Zhumell eyepiece was useful as a paperweight. OK, so maybe not that bad, but close. Viewing the Double Cluster all of us who looked through both eyepieces could see noticeable distortion through the Zhumell eyepiece, not just at the edges but starting at the center of the field and getting progressively worse to the field stop. The Ethos showed a rich field of pinpoint stars against a black background, with easily discernible colors. The Zhumell showed bloated stars against a mottled dark gray background.You get what you pay for, or in the case of the Zhumell 16mm 100 degree eyepiece, sometimes you can less than you pay for
Да понятно что шлак