Astro-Physics has been producing 1200 mounts since 1992 and 900 mounts since 1994. Over those years we have learned many lessons and refined the art of mount design and production to the highest level in the industry. In 2006, the Mach1GTO was designed and built with the benefit of those years of experience. Since our design and production staff includes experienced CCD imagers, we are continually pushing all our mounts to the limits of performance. Equally important, our customers continue to offer valuable feedback and suggestions as they have throughout the years.

We are pleased to offer the following upgrades and spare parts so that you can obtain maximum performance and versatility from the Mach1GTO mount that you own. If you require a spare part not listed below, please do not hesitate to call.

Shown to the right is a detail of the new azimuth adjuster component. Its location at the back of the mount provides smooth and accurate adjustments that are easily accessible.

The kit also includes two caps that have been beautifully engraved with an AP logo, These caps will attractively fill the holes left when removing the original azimuth adjuster knobs (no longer needed) when installing the upgrade kit.

The new Machined Knob Kit (M1485KBKIT) with its three attractive CNC machined knobs is available separately. It will complete your Mach1GTO upgrade.

The upgrade kit includes: the Precision-Adjust Rotating Pier Base / Hi-Res Azimuth Adjuster and two (2) AP Logo Caps.

Substitute for original knobs in these applications:

• Attach your Mach1GTO, 400, 600 or 600E mounts to your pier or tripod. (Note: some earlier versions of the 400, 600, or 600E may require additional washers due to shallower tapped depth in mount base.)
• Azimuth lockdown knobs on your Mach1GTO or 400 mount.
• Attach your Eagle Pier Extensions (EAGLE6E8) to your EAGLE6, AWT000, SDS400, 6" Astro-Physics Piers or ADATRI.
• Attach the LM2APT adapter (fits Losmandy mount) to your EAGLE6, AWT000, SDS400, 6" Astro-Physics Piers or ADATRI.
• Any other projects for which they are suitable.

The diameter of the knob is 1.25", length of the machined portion is 1" and thread length is 0.85"

This adapter replaces the polar axis rear plate on the Mach1GTO, allowing use of our Right-Angle Polar Alignment Scope (RAPAS). The RAPAS can be used with all Mach1GTO mounts. This adapter is push/pull adjustable for precise alignment. Once adjusted, it will retain its precision, allowing the polar alignment scope to be removed and re-inserted as needed. Please see this link for additional information.

Note: This adapter is not needed for the Mach1GTO mounts shipped beginning in 2014 (serial number M10670 or later).

We also have the 13.675" x 1.125" diameter Counterweight Shaft (M8084-A) available if you need one. This is the shaft that came standard with the Mach1GTO. It is designed to use our 6 lb., and 9 lb. and 14 lb. counterweights. It requires the Machined Safety Stop Knob.

For more details, or to purchase any of these counterweight shafts or counterweight safety pieces, click here to go to our Counterweight Shafts Options Page.

Mounts used with this adapter: Mach1GTO, 400GTO, 600EGTO, 900GTO and 1200GTO

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Mach1GTO, 600EGTO and 400GTO
Berlebach Tripod owners rejoice!  This new Control Box Adapter Extension will allow the Pier/Tripod Control Box Adapter (CBAPT) to be directly attached to the Berlebach tripod…the tripod legs’ locking levers will not interfere. This simple, but vital adapter will also allow control box attachment when upscaling to 8” ATS or custom piers when imaging.  

Effective length of extension: approximately 1.8" (46mm)

Includes the following fasteners: one 5/16-18 x 5/8” BHCS and one 5/16 ID x 9/16 OD washer

Note: The Q6280KIT in the photo at left is shown as silver for easy identification in its mounted position. It is anodized black as a finished product (see above left).