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Astro-Tech AT115EDT f/7 ED Triplet Refractor OTA

Astro-Tech AT115EDT f/7 ED Triplet Refractor OTA

5· 56 ratings

Best price now

$1,199.00at AstronomicsObserved Nov 3, 2026, 12:19 PM

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Our take on the Astro-Tech AT115EDT f/7 ED Triplet Refractor OTA

The Astro-Tech AT115EDT is a 115 mm f/7 apochromatic triplet refractor sold as an optical tube assembly, without a mount or tripod. The ED triplet glass and 805 mm focal length make it a strong choice for visual observing and astrophotography of the Moon, planets and brighter deep-sky targets. It is a fairly large, heavy tube for its aperture, so it wants a sturdy mount. The best new price is $1,199 at Astronomics as of November 4, 2026, and it is the only new listing, so there is no cheaper new option to compare against.

Best forVisual observers who want sharp, color-free views of planets and the MoonBeginning and intermediate astrophotographersOwners of a mid-size equatorial mount with spare payloadBuyers who want a triplet apo without paying premium-brand prices
Pros
  • ED triplet optics control false color well at f/7
  • 115 mm aperture is a real step up from 80–102 mm refractors
  • 805 mm focal length suits both visual use and imaging
  • Retractable dew shield and rotating focuser are practical touches
  • Strong owner ratings, 5 out of 5 from 56 ratings
  • Good value for a triplet apo at $1,199
Cons
  • OTA only: no mount, tripod, diagonal or eyepieces included
  • Around 13 lb tube plus accessories needs a substantial mount
  • Not a grab-and-go scope for quick backyard sessions
  • Only one new store lists it, so price competition is limited
  • Cool-down time is longer than with a small doublet

Astro-Tech AT115EDT f/7 ED Triplet Refractor OTA prices at every store

  • AstronomicsNew

    In stock

    $1,199.00Observed Nov 3, 2026, 12:19 PM
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Astro-Tech AT115EDT f/7 ED Triplet Refractor OTA price history

Lowest price we've seen: $1,199.00 on Nov 3 at Astronomics. Tracked across 1 store since Nov 3.

What reviewers say

Owners rate it very highly, with 5 out of 5 from 56 ratings. Most praise the sharp, color-free views and the build quality for the price. Complaints center on weight and the mount it demands.

Pros
  • Clean, color-free star images and lunar and planetary views
  • Solid mechanical build and smooth focuser
  • Good value compared with premium triplet refractors
Cons
  • Heavy enough to need a serious mount
  • Longer cool-down than smaller scopes
  • Accessories add significant cost on top of the OTA

Specifications

Type
Refractor
Focal Ratio
f/7
Aperture
115 mm

Questions and answers

Is the AT115EDT worth it?
For a 115 mm triplet apo at $1,199, yes, if you already own a capable mount. It delivers sharp, color-corrected views and images that compete with pricier refractors.
What mount do I need for it?
Plan on a mount rated for at least 25–30 lb payload, such as a mid-size German equatorial. The tube alone is around 13 lb before diagonal, eyepieces or a camera.
Does it come with a mount, diagonal or eyepieces?
No. It is sold as an optical tube assembly, so you supply the mount, tripod, diagonal, eyepieces and finder.
Is it good for astrophotography?
Yes. The f/7 triplet design keeps stars tight and color-free, and the 805 mm focal length frames galaxies, clusters and nebulae well on most APS-C and full-frame cameras.
How does it compare with an 80 mm or 102 mm refractor?
The 115 mm aperture gathers noticeably more light and resolves more planetary detail, at the cost of size, weight and a bigger mount requirement.
When is the best time to buy?
It is listed at $1,199 at Astronomics as of November 4, 2026, and only one store sells it new. Watch for holiday or store-wide sales, since there is no second seller to undercut that price.
Where is the Astro-Tech AT115EDT f/7 ED Triplet Refractor OTA cheapest?
At Astronomics, for $1,199.00, as of our latest check.
What do buyers say about the Astro-Tech AT115EDT f/7 ED Triplet Refractor OTA?
Rated 5 out of 5 from 56 ratings.