Alpine Astronomical Baader Hyperion 8-24mm Mark IV Zoom Eyepiece (1.25'/2')

This is a great eyepiece. Not having to switch eyepieces with very slight refocusing if any can be called no less than perfect. I'm loving it!

I found this eyepiece to be very good, but not much better than the much lower cost 8-24mm zoom eyepieces from Celestron and Agena. The major diffference I noticed was a slightly wider field of view for all ranges selected. Is it worth the difference in cost?

The eyepeice has a sharp focus throughout its zoom range. I replaced the very good eyepeice on the celestron regal m2 65ed with the Baader and am very happy with the results . The Regal comes with a good eyepeice but the focus softens a little above 35x . The baader stays sharp ,has a wider fov and is optically superior to it in general . The only issue is that it isnt truly parfocal. The addition of this eyepeice to a very good mid level scope has made a great improvement and well worth it . I cant wait to compare this to higher end scopes i think it will compete very well.

I use this eyepiece on all my telescopes: - William Optics GT-81 refractor. - William Optics FLT-132 refractor. - Celestron Edge HD 9.25 SCT. - Coronado Hydrogen Alpha Personal Solar Telescope (PST), double stacked. I find this zoom far more convenient than switching fixed magnification eyepieces. Zooming out helps locate center the target. Zooming in shows detail. Sometimes zooming all the way in doesn't help, such as when sharpness is limited by atmospheric conditions. Great: zoom back out a notch or two for a clearer view. Look at the whole moon. Zoom in on a crater. Zoom out. Find another crater. Zoom in. Zoom out, look at the moon, then zoom in to see Jupiter's moons. Very convenient. When you zoom, you do need to refocus a bit, but that's done quickly and I don't find that a big deal. The zoom has an adjustable collar for eye relief - twist it out until your eye rests a comfortable distance from the lens. Helps avoid black spots (etc.). I like this eyepiece so much I bought two. When doing visual observation with two telescopes, I found I kept swapping this with a 2nd, fixed magnification eyepiece because the Baader is better. This solves that problem. Highly recommend this eyepiece.

I am new to high-end telescopes and accessories. I bought this with my Celestron Evolution 8 and love it. I have zero complaints. Makes for fantastic views of everything I have looked at and is so convenient. I do wish I had bought it with the matching 2.25 barlow.

I compared this eyepiece's 24mm and 8mm settings to my 25mm and 10mm eyepieces from my old Celestron on the moon and Jupiter, and the clarity seemed equal to my eye. Plus, it remains almost perfectly focused when zooming in, so it's incredibly easy to zoom out to find and center the object, then zoom in to get the details, with maybe just a minor tweak of the focus knob at the end. No need to fumble around removing one lens and popping in another.