APM 203/1800 APO Triplet w/ CNC LW II Tube & 3.5" Feather Touch Focuser

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APM 203/1800 APO Triplet w/ CNC LW II Tube & 3.5" Feather Touch Focuser
Item # AM-203/1800-CNC
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  • The observatory-style APM 1180mm (8") f/9 Refractor sports triple air-spaced super ED APO optics.
  • Newly designed lightweight tube assembly that will easily handle visual and imaging equipment.
  • The APM 203/1800 is standard with a fully rotatable, zero image shift Starlight 3.5" Feather Touch Focuser.
  • Fully rotatable, with zero image shift, and comes with a 3.5" to 2" and 2" to 1.25" adapter.
  • Complete with tube rings, a 50mm finder bracket, 80mm extension tube and rail with weights for eyepiece balancing.
  • The APM 203/1800 telescope will arrive approximately 4 months after order is placed.
  • All APM Items are special order from Germany, and price may fluctuate due to shifting exchange rates between the Euro and the Dollar. Please call us for prices and further information if interested!


APM 203/1800 APO Triplet with CNC LW II Tube and 3.5" Feather Touch Focuser

The APM 203F/9 APO refractor is an observatory-class instrument of superb quality. Its color correction and optical performance are simply stunning, and show no additional color. Under the best conditions, this APO can show you the Encke Division of Saturn. It's also a great imaging machine for CCD as well as medium format photography (with optional field flattener).

The super strong, lightweight CNC LW II tubes incorporated into the design of the APM 203/1800 refractor are manufactured in Germany of the best materials and with fine attention to details and overall mechanical quality. The dew shield slides smoothly over the optical tube assembly without scratching the paint. The tube's internal baffles are matched for a large usable photographic field.

The Starlight Instruments Feather Touch focuser included with the APM 203/1800 APO is a full 3.5". It rotates smoothly and with zero image shift. This zero shift rotation is very important when your camera has already achieved its best focus and you would like to rotate it to the best possible position. The 50mm quick release finder bracket and dovetail base are mounted on the fully rotatable focuser, allowing you to rotate your finder, just like your camera, to the best position. The Feather Touch focuser comes with large anodized knobs, an attached 3.5" to 2" adapter and a 2" to 1.25" clamp-style adapter to protect your eyepieces and diagonals from scratches.

The included tube rings in the APM 203/1800 APO package are flat on both sides and have five tapped 1/4-20 inch holes perpendicular to the tube line with one centered. The middle two hole's center to center spacing is 60mm (2.362") and the outer two hole's spacing is 3.2" (Astro-Physics standard).

APM Telescope 203/1800 APO Triplet Refractor Features

  • Quick release 50m finder bracket and retractable dew shield included.
  • Feathertouch focuser is rotatable, offers choice of two speeds, and includes an indexed drawtube and internal brake
  • Observatory-class instrument weighs 68 lbs and is best suited for permanent installation.
  • CNC tube rings with flats on both ends.
  • 3.5 -2-1.25" eyepiece adapters with brass compression rings.
  • Triplet air-spaced Super ED APO with advanced multi-coatings.
APM Telescopes Product Number: 203/1800-CNC

Please Note: This optical tube assembly is rather front-heavy. For an additional fee, the factory will install additional weight to the rear portion of the tube, at the balancing point of your choice. If you are interested in this upgrade, please contact OPT and we will investigate your options and pricing for you. Image shows the APM 203/1800 CNC LW II with optional mount and accessories.
Additional Information

Additional Information

SKU AM-203/1800-CNC
Manufacturer APM
Telescope Series APM CNC LW II
Optical Design Refractor - Apochromatic
Mount Type None - Optical Tube Only
Warranty Not Supplied By Manufacturer
Telescope Focal Length 1800mm
Telescope Aperture 203mm
Telescope Focal Ratio f/8.8
Tube Color or Finish Gloss White
Limiting Stellar Magnitude 14.2
Optical Tube Outer Diameter 400x
Finder Included None
Focuser Size 3.5"
Length of Optical Tube 1650 mm, 2030mm while observing (dew shield)
Optical Tube Weight 68.3 lb incl. Tuberings
Included Items

Included Items

  • 203mm f/9 Optical Tube
  • 3.5" Starlight Feather Touch Focuser
  • Set CNC Tube Rings
  • 2" Extension 80 mm Long
  • 3.5" to 2" Adapter
  • 2"/1.25" Adapter
  • 50mm Finder Bracket
  • 2 Steel Rails
  • 4 Magnetic Weights for Eyepiece Balancing
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