Also included is a 2-inch quick-lock adapter, as well as a 2 inch-to-1.25-inch quick-lock compression-ring adapter. A Vixen style finder scope shoe is pre-installed on the focuser body. The Astro- Tech 152EDTcomes with CNC tube rings with a Losmandy style dovetail on one side and a Vixen Style dovetail/handle on the other. The dew sheild is retractable and has a locking screw. The elements are housed in a temperature compensated cell that is collimatable. This combination provides excellent color correction and is fully multi-coated.
The objective uses FK61 as a center element with Lanthanum as the rear element. The visual end of the focuser uses a 2″ to 1.25″ Secure-Lock compression ring to make sure your eyepieces are locked in. 72x Reducer Field flattener threads directly on to the rear of the focuser. The various thread sizes are M100x1 female thread, M92x1 female thread, M68x1 female thread. The focuser has many different ways to thread equipment on. The interior of the focuser is lined with micro baffles to help with stray light. The focus tube includes a threaded 4-inch anodized extension that can be removed to accommodate a binoviewer or to make room for crazy-long imaging trains. The Astro-Tech 152EDT OTA (with rings and both dovetails) weighs 29 pounds (13.1 kilograms). The triplet objective includes a low-dispersion FK-61 ED element, as well as a Lanthanum element. Orion (Beginner level: StarBlast, Space Probe, StarMax, Observer, etc.Astronomic’s Astro-Tech 152EDT f/8 triplet apo refractor ($3999US) features a massive 3-inch rack-and-pinion focuser with a built-in camera-angle adjuster.Meade (LX-90, LXD75, LS, LT, LightBridge series) **+.Celestron (FirstScope, PowerSeeker, AstroMaster, NexStar GT, NexStar SLT, LCM series) **.The telescope brands on the list that follows are listed in alphabetical order. Department store brandsĪnd Shopping Channel brands are listed collectively, since there is littleĭifference between any of them and they are generally inferior to all the other Meade, Orion, Skywatcher and Vixen, market multiple telescope lines, rangingįrom inexpensive entry level to expert/professional instruments these areīroken-down by line, type, or models where possible. Some of the larger telescope companies, such as Celestron, Which we are unfamiliar with and therefore unable to rate. ThereĪre many small companies making fine telescopes in very small numbers, most of We have tried to include a majority of the better-known telescopeīrands, but if a brand is not included, it does not mean it is no good. Ratings are to an extent subjective and debatable, but at least this list provides a starting point. More expensive to manufacture and sell than smaller scopes.
They are not based on clear aperture, although large telescopes are naturally These star ratings areīased on a combination of optical quality, physical quality, quality control
WHO MAKES ASTRO TECH TELESCOPES PLUS
We use a plus to indicate top of the category status. Good (***), Four Stars (****) is very good and Five Stars (*****) is Excellent. One Star (*) is poor, Two Stars (**) is average, Three Stars is
This article uses a simple to understand "star" By the Astronomy and Photography Online Staff
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