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Astro-Tech 7mm UWA 82° 1.25" Eyepiece

Regular Price: $119.95

Special Price $99.95

Availability: In stock

This 7mm Astro-Tech 82° field eyepiece is an excellent very high power, very wide field eyepiece for resolving globular clusters and closely-spaced binary stars . . .
Our Product #: ATUWA07
Astro-Tech Product #: ATUWA07

Product Description

This 82° 7mm Astro-Tech UWA eyepiece is an excellent short focal length/ultra wide field eyepiece with an outstanding price.

The optical designers used the latest computer design programs to optimize its performance. Its seven element/four group design uses low dispersion and high refractive index lenses and full multicoatings for high contrast, high resolution, and flat field images across a very wide 82° field of view. The lens edges have been blackened to improve contrast.  The eyepieces are parfocal within the UWA series.

The 7mm 82° Astro-Tech works with any telescope from a fast focal ratio reflector to a long focal length refractor or Maksutov. It's particularly good with Dobsonians and fast focal ratio refractors, providing high magnification with a very wide field of view for observing smaller globular clusters and compact nebulas.

At 12mm, the eye relief is good for such a short focal length eyepiece, although eyeglass wearers will still see a somewhat vignetted image. This isn't as much a problem as you might think, as the 82° field of view is so wide that even non-eyeglass wearers have trouble seeing the whole field at once. This is an eyepiece that shows you a "lost in space" view of space for a true full-immersion observing experience. With its unconstricted view, your eye relaxes, allowing you to easily use the "averted vision" technique to study faint details across a huge field of view.

The eyepiece has a soft fold-down rubber eyecup and comes with dust covers for both ends of the eyepiece.

Tech Details

Barrel Size 1.25"
Eye Relief 12mm
Field of view 82
Focal Length 7mm
Number of optical elements 7
Weight 6.5 ounces
Warranty 1 year


Review by:
I ordered the 10mm and the 7 at the same time. The order was placed on a Monday and my eyepieces arrived on Tuesday! The eyepieces work great, I’m very happy with my purchase, and I bought local to boot. Astronomics has became my first place to shop for gear. (Posted on 5/12/2024)
Review by:
This EP has become my new workhorse. Paired with my AT115EDT, it provides a very comfortable magnification that works perfectly for resolving planets and reasonably close double stars. The FOV is perfect from edge to edge. There are no internal reflections and overall this EP and really the entire series are a bargain at any price. Saturn last night was utterly spectacular. Highly recommended! (Posted on 8/20/2023)
Review by:
In general, we hope to get what we pay for with things; in this case I think you get more than you pay for.
I spent an evening using this in my AT102ED, also from Astronomics. My main concern was the sharpness of stars across the entire field in this f/7 scope. I was not disappointed; edge-edge the stars were pinpoint. I could also just get the entire Double Cluster in one view @102x. The Moon almost filled the view and also was sharp across the face. I was just barely able to split the Double Double in Lyra at times. This eyepiece gives me a 49' FOV at 102x and I plan to sell two other eyepieces that this replaces.
Seeing improved a bit so I opted to put this in a 2x Barlow, giving me 204x; really the limit for a 4" scope. Again, looking at the Double Double I could easily see gaps in both binaries and nice round stars anywhere in the view. M57 was faint because of the almost-full Moon, but I readily saw the smoke ring shape with the center hole.
My only complaint is the lack of an adjustable eyecup. But, I found that the position of the fixed one was good for 90% of the time. Is this on par with the Green Goodies that are an informal benchmark...not quite. But, for the price of one excellent eyepiece you can get 3 very good ones in this series and be quite happy with them. I am now looking at another one to fill a gap in my eyepiece spectrum. (Posted on 10/10/2022)
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