APM photo-visual SD Triplet Apo 180 mm F/7-F/5.6

APM photo-visual SD Triplet Apo 180 mm F/7-F/5.6

The instrument is the entry into the world of really big APO refractors.
Manufacturer : APM
SKU : APM-SD-180-7-5.6
Price: 12596.64 € excl tax
Delivery date : 4-6 months
APM photo-visual SD Triplet Apo 180 mm F/7-F/5.6

This instrument is the entry into the world of really big APO refractors. This APO fills exactly the gap between our 152mm APO and the 203mm APO.
Of course, the telescope requires a really big and heavy mount. This makes the instrument only conditionally suitable for mobile use. For every observatory it is certainly a real eye-catcher.


Our specially manufactured reducers and correctors turn this optic into a high-performance photographic machine!

The 180mm SD apochromat with the large 4" RAP focuser enables astrophotography at the very highest level. With the 0.8x reducer/flattener, you can achieve a fast focal ratio of f/5.6 with full correction of the image field. This is an optimal prerequisite for full-frame photography. With it, you can easily expose objects at night. The SD optics enable a colour-pure image, so that even bright stars do not show any colour fringes.

Robust mechanics

The optical elements are essential  for a telescope. But - just as important is the mechanical construction of the tubes with its internal apertures and the focuser.
Here we have taken special care to use materials with particularly low thermal expansion. The pull-out is tilt-free and can carry heavy loads without any problems. An adequately dimensioned and adjustable dew cap is of course also included. The solid tube clamps supplied are CNC machined and also allow lateral mounting for further accessories such as viewfinders, secondary optics (guide tube ...). A carrying handle for the 26 kg instrument is of course also included.

No instrument of this performance class leaves our warehouse without an appropriate test

To guarantee the typical high quality of APM telescopes, every optic of this performance class undergoes an interferometric test at 532nm (green).

Whether you are interested in solar or planetary photography, visual observations or astrophotography of nebulae, star clusters and galaxies, this telescope will definitely inspire you.

Scope of delivery :
  • Optical tube
  • SD Apo ( FCD 100) objective 180 mm f/7, air gap
  • Broadband multicoating on all glass-air surfaces
  • Tube clamps
  • Losmandy rail
  • Carrying handle
  • 4" focuser with 1:10 reduction
  • 0.80x reducer/flattener
  • Case
  • Test report


More technical data to follow!
Products specifications
Weight over all57.2 lb
Aperture180 mm
Focal length1260 mm
CoatingBroadband Mulitcoated
Type of telescopeAPO Refractor
Focuser4" rack with 1:10 reduction ratio
LensSD Apo ( FCD 199)
Focal ratiof/7 und f/5.6
LensSD Apo (FCD 100)