Astro-Tech AT152EDT f/8 Triplet APO Refractor OTA

A true APO using FK61 and Lanthanum in a temperature compensated cell. This is a fantastic instrument.

AT152EDT Triplet Apo Refrator Technical Highlights

Aperture: 152 mm

Focal length: 1216 mm

Focal ratio: f/8

Weight: 28 pounds

The AT152EDT is an extension of the incredibly well received EDT series from Astro-Tech.  We wanted to bring the best value and performance that we possibly could in a large refractor.  We feel this is truly a lifetime instrument.

The AT152EDT comes with a 3.7" Dual Speed Racking and Pinion focuser that rotates and has 98mm of travel.  Also, 4" of extension can be removed between the focuser and the body to change the backfocus from 140mm to 210mm.  This comes in handy for astro-photography rigs and well as binoviewers.  The interior of the focuser is lined with micro baffles to help with stray light.  The focuser has many different ways to thread equipment on.  The various thread sizes are  M100x1 female thread, M92x1 female thread, M68x1 female thread.  The optional .72x Reducer Field flattener threads directly on to the rear of the focuser.  The visual end of the focuser uses a 2" to 1.25" Secure-Lock compression ring to make sure your eyepieces are locked in.

The objective uses FK61 as a center element with Lanthanum as the rear element.  This combination provides excellent color correction and is fully multi-coated.  The elements are housed in a temperature compensated cell that is collimateable.  

The dew shield is retractable and has a locking screw.

The scope comes with CNC tube rings with a Losmandy style dovetail on one side and a Vixen Style dovetail/handle on the other.  A vixen style finder scope shoe is pre-installed on the focuser body.