Welcome to OPT Telescopes!

My Cart

Your cart is empty

You have no items in your shopping cart.

APM 152/1200 ED APO Doublet OTA - Discontinued

Item # AM-152-1200-2.5

Quick Overview

  • This lightweight 6" ED APO Doublet from the folks at APM has a focal ratio of f/8 and a heavy-duty 2.5" focuser with 1:10 micro-focusing.
  • The two-element optical system is air-spaced, and the design features a minimal 0.2mm gap between the two for shorter than normal cool-down time.
  • Back-focus is 180mm, and the interior baffles have been designed to produce a large illuminated field.
  • This APM 152/1200 ED APO telescope comes with a 2.5" rack and pinion focuser with micro-focusing capabilities. It has a high load capacity and is guaranteed by the manufacturer against flexing under load.
  • This package also includes tube rings, a 3" Losmandy-style dovetail, a 50mm Viewfinder with bracket, and a carry case.
  • The weight of the telescope is 16.5 lb., or 23.6 lb. if you include the tube rings and dovetail plate.

APM 152mm f/8 ED APO Doublet Optical Tube Highlights…


  • This APM 6" f/8 ED Apo Doublet Refractor has an optical system that is made with Chengdu CDGM FK61 and Lanthanum H-LAF53 glass.


  • The two-element lens system is air-spaced. The gap measures only 0.2 mm, which means there will be very little air encapsulated between the two lenses to cool down. The cell has been optimized so that there is no pinching between -15°C and +40°C, and the elements can be centered in the cell with special thermo-compensated custom made Teflon screws.


  • APM developed a 2.5" rack and pinion focuser with 1:10 micro focusing for this telescope, which guarantees no bending or flexing and a high load capacity for imaging.


  • The micro-focuser includes a 2" and 1.25" adapter with newly designed collar clamps.


  • The APM 152/1200 has a back-focus of 180mm from the 2" connection, and the inner baffles are calculated for a maximum illuminated field.


  • The tube end of the telescope has a M109 x 1 and M95 x 1 threads to accept a 3" or 2.5" Starlight focuser, just in case you'd like to upgrade your focuser to a Feathertouch.


  • The dew shield of the 152mm ED APO is retractable so that the telescope can be transported very easily. At only 16.6 lb. (without the tube rings or dovetail), this telescope is great for travel, and the mount required to drive it can be a fairly lightweight model.

APM 152/1200 Specifications...


  • Type of Telescope: Doublet ED-Apochromat


  • Lens: Doublet ED-Apochromat with Glass Combination: Chengdu CDGM FK61 + Lanthanium H-LAF53


  • Color: White with black trim


  • Tube Material: Aluminium


  • Aperture: 152mm


  • Focal Ratio: f/8


  • Focal Length: 1200mm


  • Coating: Broadband Multi-Coated


  • Resolution: 0.76"


  • Magnitude Limit: 12.7


  • Max. Useful Visual Power: 300x


  • Backfocus: 180mm


  • Focuser: 2.5" Rack and Pinion Focuser with 1:10 Micro Focusing


  • Connection to Eyepiece: 2" - 1.25" with adapter


  • Viewfinder: 50mm Viewfinder with bracket


  • Tube Diameter: 156mm


  • Length During Observing: 1220mm


  • Transportation Length: 1020mm


  • Dewcap Diameter: 186mm


  • Tube Weight: 23.6 lbs. including tube rings & 3" dovetail


  • Case: Yes


  • Case Weight: 26.4 lbs.


  • Total Weight (Case & Telescope): 50.7 lbs.


  • Eyepiece Adapter: 2" and 1.25"
SKU AM-152-1200-2.5
Manufacturer APM
Telescope Series APM LW
Optical Design Refractor - Achromatic with ED Glass
Mount Type None - Optical Tube Only
Telescope Focal Length 1200mm
Telescope Aperture 6"
Telescope Focal Ratio f/8
Limiting Stellar Magnitude 12.7
Optical Tube Outer Diameter 156mm
Finder Included 10 x 50 Optical Finder
Optical Tube Weight 16.5 lbs.
Total Telescope Weight 23.6 lbs.
  • 6" ED APO Double Optical Tube
  • One Pair of Tube rings
  • 2.5" Focuser with 1:10 Microfocusing
  • Eyepiece Adapter
  • 3" Losmandy-Style Dovetail
  • 50mm Viewfinder with Bracket
  • Carrying Case

Website Design by GammaFX, Design Studio Web Design Studio