Astro-Physics

ASTRO-PHYSICS: Perfection in Optics and Mechanic

First-class refractors and innovative mounts for demanding astronomers

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.

Grid List

Set Descending Direction

18 Item(s)

  1.   Astro-Physics 2.5" Field Flattener for 92mm Stowaway / older 105mm EDT Traveler

    # 1405342

    € 830.00 Price excl. German VAT tax (19%): € 697.48
    • Extends the focal length a little bit by 612mm, the resulting is f/7
    • Provides a field of view with 50 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 3,2 x 2,2 degrees at the slightly larger focal length of 644mm
    • Works perfectly with 35mm full frame cameras
    • Backfocus spacing: 2.52" (64,1mm)
    • Machined aluminum covers are included
    Learn More
  2.   Covers for Astro Physics 2,7" Field Flattener

    # 1405360

    € 190.00 Price excl. German VAT tax (19%): € 159.66
    • Machined aluminium covers for closing the Astro-Physics 2,7“ Field Flattener with 6x7 Outer Bayonet,
    • The set contains a Felted Cover for AP 2,7" Field Flattener (Bayonet Side) and Threaded Cover and Accessories with Male Threads
    • The covers have been included with all 2,7" Field Flattener purchased since summer 2009
    Learn More
  3. Astro-Physics Mach2GTO Mount (various versions available)
    From: € 16,050.00 Price excl. German VAT tax (19%): € 13,487.39
    • 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
    • Astro-Physics GTO Keypad with Keypad Protector for all GTO-Mounts (optional) (#1401200 , € 1300,-) available
    Learn More
  4.   2.7" Prime Focus Field Flattener for 130 f/8.35 StarFire EDT

    # 1405340

    € 1,290.00 Price excl. German VAT tax (19%): € 1,084.03
    • 2,7" Field flattener with 6x7 Pentax Prime Focus Camera Adapter,
    • Sutiable for 140 f/7.5 StarFire EDF, 130 f/8.35 StarFire EDT, 155 f/7 StarFire EDFS, Star130ED, Star12ED, 5" f/8 StarFire, 5" f/8 (#1405340)
    • Backfocus 3,4" +/- 1/10" (86,4 mm +/- 2,5 mm)
    • Works perfectly with 35mm full frame cameras
    • The bayonet male thread size at the rear is 3.725" x 24. Use the bayonet locking ring to secure your camera into position after you have framed your image. This allows you to rotate the camera to achieve your desired composition.
    • Machined aluminium covers are included
    Learn More
  5. 0.72x Quad Telecompressor Corrector

    # 1405380

    € 2,350.00 Price excl. German VAT tax (19%): € 1,974.79
    Learn More
  6.   Astro-Physics 0.8x CCD Telecompressor for 92mm f/6.65 Stowaway

    # 1405333

    € 830.00 Price excl. German VAT tax (19%): € 697.48
    • Astro-Physics 0,80x CCD Telecompressor for 92mm Stowaway Refractor and older 105mm EDT Traveler
    • reduces the focal length to 488mm with a focal ratio of f/5.3
    • Provides a field of view with 40 mm diameter without vignetting (APS-C Sensor) uand delivers a diffraction limited image even at the edge of the image circle
    • Is equal to a field of view with a diameter of 4.2 x 2.9 degrees
    • Works perfectly with 35mm full frame cameras
    • Backfocus spacing: 2.52" (64,1mm)
    • Machined aluminum covers are included
    Learn More
  7. Mount not included

    # 1400092

    € 5,275.00 Price excl. German VAT tax (19%): € 4,432.77
    • Apochromatic Triplet Objective
    • Clear aperture 92 mm (3,62"), focal length 612 mm (24,1"), Backfocus of 160mm (6,3“)
    • Feather Touch Micro 9:1 dual-speed reduction with rotating collar, rack and pinion
    • Multi-layer, broadband, overall transmission greater than 97% in peak visual wavelengths
    • Incl. dustcover, 2" and 1.25" adapters, mounting rings, V-Style dovetail bar as well as carrying case
    • Mount, focuser, camera and reducer - as shown in the product image - are not included in the scope of delivery.
    Learn More
  8.   Astro-Physics 2,7" Field Flattener for 130 StarFire EDFGT

    # 1405346

    € 1,350.00 Price excl. German VAT tax (19%): € 1,134.45
    • 2,7" Field flattener with 6x7 Pentax Prime Focus Camera Adapter,
    • Sutiable for 130 f/7.5 StarFire EDF, 130 f/8.35 StarFire EDT, 155 f/7 StarFire EDFS, Star130ED, Star12ED, 5" f/8 StarFire, 5" f/8 (#1405340)can be coupled to a variety of different cameras for truly superb photographs or images with your 130 f/6.3 StarFire GT that has a 2.7" focuser
    • Backfocus 3,4" +/- 1/10" (86,4 mm +/- 2,5 mm)
    • Works perfectly with 35mm full frame cameras
    • The bayonet male thread size at the rear is 3.725" x 24. Use the bayonet locking ring to secure your camera into position after you have framed your image. This allows you to rotate the camera to achieve your desired composition.
    • Machined aluminium covers are included
    Learn More
  9.   Backfocus Spacer for 0,72x Quad Telecompressor Corrector (various versions)
    € 125.00 Price excl. German VAT tax (19%): € 105.04
    • Necessary for the 0.72x Quad Telecompressor Corrector (#1405380 , € 2350,-) for TEC APO 140 / 160 / 180 and Astro-Physics 130mm f6.3 StarFire GTX refractor to reach the required distance of 80.8 mm
      • Backfocus Spacer 22,1 mm for Astro-Physics 130mm f6.3 StarFire GTX refractor (Spacing without Backfocus Spacer 102,9 mm)
      • Backfocus Spacer 18,3 mm for TEC APO 140 f/7 (Spacing without Backfocus Spacer 99,1 mm)
      • Backfocus Spacer 17,0 mm for TEC APO 160 f/7 (Spacing without Backfocus Spacer 97,8 mm)
      • Backfocus Spacer 16,0 mm for TEC APO 180 f/7 (Spacing without Backfocus Spacer 96,8 mm)
    • Select the appropriate backfocus spacer in the dropdown menu
    Learn More
  10.   Astro-Physics Tube ringes with 4.7“, 5.5“ und 8“ (120mm, 140mm und 205mm) diameter
    € 600.00 Price excl. German VAT tax (19%): € 504.20
    • Suitable for 130 StarFire EDF-GT, 130 StarFire EDT/EDF/GTX, 175 and 180 EDT/EDF telescopes from Astro-Physics
    • Meade 127ED and other telescopes tubes of 4,7“ (120mm), 5,5“ (140mm), 8,0“ (205mm) diameter
    • For secure attachment to Astro-Physics dovetail rails.
    • The rings feature a hinged assembly with thumbscrew closure. They are felt-lined to prevent marring of your tube.
    • Please order the size that corresponds to the outside diameter of your tube assembly.
    Learn More
  11. Mount not included

    # 1400136

    € 11,150.00 Price excl. German VAT tax (19%): € 9,369.75
    • 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
  12. Astro-Physics GTO-1100 Mount (various versions available)

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

    From: € 15,500.00 Price excl. German VAT tax (19%): € 13,025.21
    • 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
  13. Astro-Physics GTO-1600 Mount (various versions available)

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

    From: € 19,200.00 Price excl. German VAT tax (19%): € 16,134.45
    • 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
  14.   Astro-Physics GTO Keypad with Keypad Protector for all GTO-Mounts (optional)

    # 1401200

    € 1,300.00 Price excl. German VAT tax (19%): € 1,092.44
    • 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 with CP1, CP2, CP3 and CP4 control box
    • firmware upgrades available through internet downloads
    Learn More
  15.   Astro-Physics GTO-CP4 Controll Box for Servo Drive for all GTO-Mounts (is included)

    # 1401101

    € 1,750.00 Price excl. German VAT tax (19%): € 1,470.59
    • 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
  16.   Astro-Physics EAGLE 6 (optional)

    # 1401030

    € 3,200.00 Price excl. German VAT tax (19%): € 2,689.08
    • 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
  17.   0,72x telecompressor and 3.5" Rotating Focuser Accessory Adapter

    # 1405375

    € 185.00 Price excl. German VAT tax (19%): € 155.46
    • 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
  18.   Astro-Physics Covers for AP130GTX Tube and 3.5" Focuser
    From: € 95.00 Price excl. German VAT tax (19%): € 79.83
    • 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

18 Item(s)