Jump to content



Price - $2,995.00

Ad Number: 125535

Posted: 05 Jan 2018

Please sign in to message advertiser


The two most important considerations in mount design and construction are maximum strength/rigidity for a given size and accuracy of the drive system. Without this basic foundation, all other features of a mount are just superfluous frills. The Astro-Physics 400GTO was engineered to be a compact, firm platform for your high-resolution instrument. Whether your interests are purely visual or include astro-photography, a steady image in the eyepiece or camera viewfinder is extremely important.
The 400GTO is constructed of the highest quality components to provide you with years of observing pleasure. All parts are precisely machined on our computerized CNC lathe and machining center using solid or thick-wall aluminum and stainless steel. Machining tolerances are very high to achieve a tight, solid fit of all components. These are not thin-wall, weak, porous die castings as in most other mounts of comparable size. We avoid the use of any carbon steel shafts or plated steel fasteners because they will deteriorate with time. This mount will not rust or bind up and will retain its appearance and function throughout the years.
Both axes respond to fingertip pressure with unparalleled smoothness. Built-in clutches can be disengaged for smooth sweeping or locked for astrophotography. The worm gears, motors and drive components are enclosed to protect them from dirt and dust. With the 105 Traveler, the 400 mount damps out in one second when mounted on the lightweight aluminum tripod.
Your 400GTO mount can grow with your skills and interests in astronomy. You can enjoy the visual pursuits using the go-to Keypad controller and/or DigitalSky Voice software to help you find many fascinating objects. If you plan to take astro-photos, you will be pleased with the solid stability and inherent accurate tracking capability of the drive system. The GTO Control Box contains a plug-in for the CCD auto-guiding and imaging systems. These units will allow you to auto-guide astronomical photos and explore CCD imaging.
Precision machined aluminum with radiused edges
Gears and motors are fully enclosed
Gear in declination axis allows full 360 degree continuous rotation; scope can move through the zenith for photography
2.5" (6.4cm) hollow right-ascension and declination shafts maximize strength at minimum weight
Large thrust bearings form highly-stable thrust surfaces for tremendous rigidity in a small package
Removable stainless steel counterweight shaft for compact storage
Engraved setting circles with Porter Slip Ring design
Fine altitude and azimuth adjustments for quickly and accurately zeroing in on the pole in the field
Black anodized finish will retain its lustrous beauty for years
Base fits into 6" diameter pier with 0.083" wall thickness
Specifications of the Equatorial Head


  • Condition Excellent
  • Location Oceanside, CA

Advertiser Info

Powered by Classifieds

Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics