Astro-Physics

It is no big secret that ASTRO-PHYSICS also manufactures equatorial GoTo-mounts as well as a variety of mechanical and optical high-end accessories. The company, founded by Roland Christen in 1975, is well-known for its full-apochromatic refractors, which are still produced today and are legendary.

ASTRO-PHYSICS uses state-of-the-art CNC machine technology and hydraulic circular grinding machines to manufacture high-precision fitings. Almost every part is built from scratch in Rockford, Illinois. This does not only include the individual optics, but also the critical gears, circuit boards and components right down to the knobs and fittings.

The reliability of Astro-Physics mounts is legendary. Two "el Capitan" are working in the Antarctic for several years now, even at temperatures of -75° Celsius. Many of our customers use the same mounts for 20 years or longer without any problem and without failures.

The GTO 1100 and GTO 1600 series are especially remarkable, because they are fully transportable - despite their high instrument load. This is possible because the declination axis can be separated from the rest of the mount. Even the GTO 1600, with 90 kg instrument load, can be transported and set up by one person! In the case of the GTO 3600, the declination axis can also be separated, but this mount is transportable only to a limited extent and better used as a stationary mount. The MACH 1 completes the series. At the moment, the MACH 1 is the only mount of German design in its class, in which ALL cable connections to the telescope (CCD camera, electric focusing, etc.) are passed through the polar axis.

In short, ASTRO-PHYSICS stands for

  • sharp high-resolution optics
  • rugged vibration-free mountings
  • and easy-to-use, effective accessories.

Detailed information about the Astro-Physics German Equatorial Mount are available here.


Price list Astro Physics


Astro-Physics accessories
: Further accessories can be found on our Astro-Physics price list, this will also be listed bit by bit. Contact us and we will gladly create an individual offer for your desired device.

Grid List

Set Descending Direction

12 Item(s)

  1. Astro-Physics Mach2GTO Mount

    # 1401372

    € 11,843.69 Price excl. German VAT tax (16%): € 10,210.08
    • German Equatorial Mount with brushless Micro-step Servo System and
    • Renishaw Absolute Encoder for the ultimate in precise tracking
    • Precision-Adjust Rotating Pier Base / Hi-Res Azimuth Adjuster
    • Ideal for 6-7” refractors, 8-12” SCTs and Maks
    • With GTOCP5 Control System and Auto-Adjusting Motor/Gearboxes
    • {{block type="core/template" template="wordpress/product/shortcode-global.phtml" shortcode="[product sku=\"1401200\"]"}} available
    Learn More
  2. Astro-Physics Mach2GTO Mount (various versions available)
    From: € 11,843.69 Price excl. German VAT tax (16%): € 10,210.08
    • German Equatorial Mount with brushless Micro-step Servo System and
    • Renishaw Absolute Encoder for the ultimate in precise tracking
    • Precision-Adjust Rotating Pier Base / Hi-Res Azimuth Adjuster
    • Ideal for 6-7” refractors, 8-12” SCTs and Maks
    • With GTOCP5 Control System and Auto-Adjusting Motor/Gearboxes
    • Extended Temperature option available - various versions at the dropdown below
    • {{block type="core/template" template="wordpress/product/shortcode-global.phtml" shortcode="[product sku=\"1401200\"]"}} available
    Learn More
  3. Mount not included

    # 1400136

    € 8,529.41 Price excl. German VAT tax (16%): € 7,352.94
    • Apochromatic Triplet Objective
    • Clear aperture 130 mm (5.12"), focal length 819 mm (32.25")
    • Compact, lightweight tube assembly that can be disassembled into two parts with 3.5" Astro-Physics focuser (dual-speed mechanism of the FeatherTouch 9:1 Micro)
    • Incl. dew shield and dustcover, 2.7" 2" and 1.25" adapters as well as carrying case
    Learn More
  4. Astro-Physics GTO-1100 Mount (various versions available)

    Astro-Physics GTO-1100 Mount (various versions available)

    From: € 9,952.60 Price excl. German VAT tax (16%): € 8,579.83
    • German Equatorial Mount with Servo Motor Drive
    • the R.A. and Dec. axes split easily for a more comfortable assembly and / or transport - load easily a telescope (configuration) of over 110 lb. (50 kg)
    • with GTOCP4 Control Box and Auto-Adjusting Motor/Gearboxes, optional GTO Keypad available
    • optional with Encoders in R.A. und Dec Axis available - various versions at the dropdown below
    Learn More
  5. Astro-Physics GTO-1600 Mount (various versions available)

    Astro-Physics GTO-1600 Mount (various versions available)

    From: € 13,491.09 Price excl. German VAT tax (16%): € 11,630.25
    • German Equatorial Mount with Servo Motor Drive, replaces GTO 1200
    • the R.A. and Dec. axes split easily for a more comfortable assembly and / or transport - with 220 lb. (100 kg) instrument capacity
    • with GTOCP4 Control Box and Auto-Adjusting Motor/Gearboxes
    • optional with Encoders in R.A. und Dec Axis available - various versions at the dropdown below
    Learn More
  6.   Astro-Physics GTO Keypad with Keypad Protector for all GTO-Mounts (optional)

    # 1401200

    € 1,086.89 Price excl. German VAT tax (16%): € 936.97
    • a self-contained handheld computer that allows you to control all essential telescope functions and includes an extensive database of objects
    • more than 17,000 objects in extensive databases
    • suitable for all Astro-Physics GTO mounts incl. Keypad Protector
    • firmware upgrades available through internet downloads
    Learn More
  7. Astro-Physics GTO-CP4 Controll Box for Servo Drive for all GTO-Mounts (is included)

    # 1401101

    € 1,457.31 Price excl. German VAT tax (16%): € 1,256.30
    • Important note: the GTO-CP4 control box is not available ex stock, but can be ordered in a short time. If you're interested please inquire by mail or phone.
    • completely redesigned with modern chip technology resulting in faster processing speed and increased memory capacity for future feature additions
    • includes all features from the lastest version of the GTOCP3, all GTO mounts produced since 1998 can be easily upgraded
    • via Ethernet and WiFi connection, direct download of future firmware updates for the GTOCP4 (very quick and easy) as well as the Keypad
    • supports floating point operands to improve calculation accuracy and coordinate conversions
    • integrates all functions of the Absolute and the Precision Encoders and mechanical Limit Switches
    Learn More
  8.   Astro-Physics EAGLE 6 (optional)

    # 1401030

    € 2,012.94 Price excl. German VAT tax (16%): € 1,735.29
    • 6" portable (28 lb.), adjustable folding pier
    • additional 30 degrees of azimuth adjustment in the Pier Adapter Slots. This will greatly speed up rough polar alignment!
    • practical height range of the pier is 24" to 36"
    • uneven ground adjustment range (6.5 degrees of slope)
    • for use with the Mach1GTO German Equatorial Mount as well as the Astro-Physics 400, 600 and 600E Series Mounts produced previously
    Learn More
  9.   0.72x Quad Telecompressor Corrector for TEC Refractors and 130GTX or upgraded 130EDFGT (various versions available)
    € 1,852.10 Price excl. German VAT tax (16%): € 1,596.64
    • 0,72x Telekcompressor Corrector of Astro-Physics for TEC 140 ED/160 FL/180FL and 130mm f6.3 StarFire GTX  Refractor or upgraded 130EDFGT
    • reduces the focal length until 900 mm and gives you a focal ratio of f/5
    • incl. different backfocus spacer
    • 0,72x Telecompressor Corrector Accessory Adapter is needed
    Learn More
  10.   0,72x telecompressor and 3.5" Rotating Focuser Accessory Adapter

    # 1405375

    € 116.97 Price excl. German VAT tax (16%): € 100.84
    • Endcap for TEC Scopes and Starlight Instruments 3.5" focusers.
    • When ordering the QuadTCC for a TEC scope you will also need to order a Drawtube Endcap for the focuser. This only applies to the TEC focusers.
    Learn More
  11.   Astro-Physics 3,5" Prime Focus Field Flattener

    # 1405351

    € 1,008.91 Price excl. German VAT tax (16%): € 869.75
    • extends the focal length a little bit, the resulting is f/6.7
    • provides a field of view with 65 mm diameter without vignetting and delivers a diffraction limited image even at the edge of the image circle
    • is equal to a field of view with a diameter of 4.3 degree at the slightly larger focal length of 870 mm
    • it works perfectly, even with the large CCD-sensors which are currently used by amateur astrophotographers
    Learn More
  12.   Astro-Physics Covers for AP130GTX Tube and 3.5" Focuser
    € 48.74 Price excl. German VAT tax (16%): € 42.02
    • covers for closing the AP130GTX Tube or 3.5" Focuser - please select model from the dropdown below
    • machined aluminium covers, provide both dust and damage protection while the scope is disassembled into its components
    • ideal for travel, tube assembly that can be disassembled into two parts: the optical tube (21") and the 3.5" focuser (11")
    Learn More

Grid List

Set Descending Direction

12 Item(s)