[8mm] I bought this eyepiece for use on a Sky Watcher 102 mm Maksutov telescope. It has 54x magnification, an eye-filling 68 deg apparent FO, and a true FOV of 1.25 deg. This is perfect for viewing the moon and many other things, including Messier objects. The 24 mm eyepiece is large, but not too large and heavy for this small (11.5 long) telescope. It does not display noticeable vignetting, and star images are sharp from edge to edge. The 19 mm eye relief is enough you can wear glasses if needed, and if not, your eyelashes dont touch. It is half the weight and 1/3 the cost of a Nagler eyepiece, with similar performance. It is much more comfortable to use than the 25 m Ploessl which comes with the telescope.

[8mm] I bought this eyepiece for use on a Sky Watcher 102 mm Maksutov telescope. It has 54x magnification, an eye-filling 68 deg apparent FO, and a true FOV of 1.25 deg. This is perfect for viewing the moon and many other things, including Messier objects. The 24 mm eyepiece is large, but not too large and heavy for this small (11.5 long) telescope. It does not display noticeable vignetting, and star images are sharp from edge to edge. The 19 mm eye relief is enough you can wear glasses if needed, and if not, your eyelashes dont touch. It is half the weight and 1/3 the cost of a Nagler eyepiece, with similar performance. It is much more comfortable to use than the 25 m Ploessl which comes with the telescope.

[1.25"] Bought this with the 14mm and 28mm fine tuning rings (ftr) that are sold separately. The 1.25 nosepiece has a Barlow lens because if you take off the 1.25 and put it in a 2 diagonal it is 22.9mm still with the 68 afov.
With the 14 & 28mm ftr together it is 8.1mm focal length. So with one eyepiece I can get 13mm,10.8mm, 9.2mm, 8.1mm and basically 23mm focal lengths all in one eyepiece. I mainly use the 13mm and 23mm and save the 8mm for closeup views of small globular clusters and other DSOs.
It has an excellent flat field view to the edges and especially considering the price it is as good or near as good as EPs that cost three times as much. Baader hit it out of the ballpark with this one.

[8mm] Es una ocular de excelente calidad de construccin con materiales de primera y un gran eye relief. Las imgenes observadas son de gran calidad y tiene los aditamentos necesarios para astrofotografa y para cambiar los aumentos.
Una excelente compra

[1.25"] 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.

[68°] I have a 12 inch dobsonian Telescope with several eyepieces but none were photo friendly and Dobs are somewhat unconventional for photography. This is threaded for eyepiece attachment (with adapters) but still waiting on the 46mm threaded adapter so can’t comment on how it worked out. Based on basic eyepiece expectations I really like this and the many options and optional parts. Quality is exceptional, zoom detents 1.5 and 2 inch compatible make this super versatile. Eye relief is good, views in my scope are great.

[8mm] The 24mm hyperion works very well with my f6.5 achromatic telescope. Its 68 degree FOV translates to 2.4 degree true field of view on that scope, a definite step up from the eyepieces that came with the scope from Celestron. Very little chromatic aberation noticed even looking at the bright moon. The slight green halo at the top edge of the full moon was only noticed when I remembered to look for it - not a problem for me as a visual observer. Jupiter gave good views, only a little soft at the very edge of the field. The only problem I experienced is that it's on the heavy side. I can't achieve balance on my mount the way it's set up.

[9.5 mm] Fantastic view , great field.

[8mm] I have a Celestron Astro Fi 130 telescope. It came with 10mm and 25mm lenses. The 10mm field of view is so narrow that finding objects was often very difficult, even when I used the lower magnification 25mm lens to center the object.
This Alpin Astronomical Baader lens has a wider field of view than the 25 mm lens my telescope came with. When I realized that, I stopped using the 25mm lens to align my mount.

The rubberized grip is nice. This is a large lens. It weighs significantly more than the factory lenses.

I have also used this lens with a 2x barlow lens. I was able to see rings on Saturn and even some hints of banding on Jupiter. Not bad for a 130mm aperture. The wide field of view meant I could point to those planets without aligning my telescope (because they were setting and I didn't have enough visible stars or time to align) and family members had enough time to take turns viewing the planets without having the objects drift out of view.

This was one of the most expensive accessories I purchased for my telescope, but it has enhanced my enjoyment significantly.

[9.5 mm] This wide angle low power eyepiece provides a clear view with stars appearing as pin points to the edge of the field. A real valuable tool in your eyepiece collection.