I am looking to move from a 1.25" to a 2" for my CPC1100. I have looked at the TeleVue Nagler series and the Explore Scientific 82 degree series. I currently own several ES for my 1.25". Are the ES 82 comparable to the TV Nagler's? The price is almost double for the Nagler's. Will the ES get me close to the quality of image in the TV Nagler's? Are there any other eyepieces you would recommend besides these two in getting as close to the performance of the TV?
Thanks for your help with this.
In your F/10 scope, the difference between the ES82 and Naglers will be exceedingly minor.
TeleVue are designed to provide a nicely corrected field in scopes with fast focal ratios, which is why they're so expensive. The longer the focal ratio, the less advantageous it is to look through Tele Vue glass.
That's not to say they don't offer exceptional contrast and "clarity" regardless of focal ratio, but that kind of quality is much more subtle between one eyepiece line and another. Edge correction in fast focal ratio scopes tends to be the dominant quality that separates one line of eyepieces from another.
I appreciate all the comments. One last question - would you use the ES 30 or 24 as your go to EP for beginning your viewing before you start increasing your magnification?
I got a chuckle out of Vostock 1's movie analogy.
I don't know if I really start with one magnification. It depends on the object I'm looking at. If the first object is a small planetary nebula in my 12 F/5, the first eyepiece I reach for is my 3mm for 508x. If it's M31, then it's the 21mm. If it's M42, it's the 17mm ES92. If it's M13, it's the 8 Ethos.
In your scope, if you wanted a low power, wide angle eyepiece, I would lean towards the 30mm. At F/10 that will give you a brighter 3mm exit pupil, which will play nicer with aggressive line filters down the road, and give you a wider TFOV (0.88 degrees vs 0.69 degrees in the 24mm). This is just about the widest TFOV your scope can support. At 93x magnification, it's also a healthy magnification for many objects.
Edited by CrazyPanda, 18 February 2019 - 05:37 PM.