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Q:
I have an optical tube equipped with a Losmandy D dovetail mounting plate. Will this work with the improved Advanced VX (AVX) mount?
I have an optical tube equipped with a Losmandy D dovetail mounting plate. Will this work with the improved Advanced VX (AVX) mount?
No, the Losmandy D dovetail plate will not fit the improved AVX mount. The improvement to the AVX mount allows it to be used with CGE format dovetail plates, but not Losmandy D format plates. The CGE and Losmandy D formats are similar, but not exactly the same. Losmandy plates are a millimeter or so wider, but CGE plates allow more surface area contact with the dovetail clamp.
Q:
What prevents the Losmandy D plates from working with the improved AVX?
What prevents the Losmandy D plates from working with the improved AVX?
The improved AVX can accept a dovetail with a maximum width of 74.5mm. The Losmandy D plate is a bit wider than that. Also, the improved AVX requires the height of the dovetail undercut to be at least 10.2mm, and the Losmandy D has a dovetail undercut which shorter than that.
Q:
So, how do I mount my optical tube with a Losmandy D dovetail plate onto the improved AVX?
So, how do I mount my optical tube with a Losmandy D dovetail plate onto the improved AVX?
You’ll need to replace the Losmandy D dovetail plate with a compatible dovetail plate, such as the Celestron #94214 CGE Universal Mounting Plate.
Q:
I have a Losmandy D format dovetail plate, but it is not manufactured by Losmandy. Will it work with the improved AVX?
I have a Losmandy D format dovetail plate, but it is not manufactured by Losmandy. Will it work with the improved AVX?
No, if the dovetail plate uses the Losmandy D format, then it is not compatible with the improved AVX, regardless of the manufacturer of the plate.
Q:
I have an optical tube equipped with a Vixen dovetail mounting plate. Will this work with the improved AVX mount?
I have an optical tube equipped with a Vixen dovetail mounting plate. Will this work with the improved AVX mount?
Yes, the improved AVX, like the original AVX, is compatible with Vixen format dovetail plates. However, the plate must have a dovetail length of 100mm or greater.
Q:
Why does my Vixen dovetail, or CG-5 dovetail, need to have a dovetail length of at least 100mm?
Why does my Vixen dovetail, or CG-5 dovetail, need to have a dovetail length of at least 100mm?
The knobs on the AVX that hold the dovetail plate in place are spaced 90mm apart. If the dovetail length is less than 100mm, then both knobs cannot come into contact the dovetail simultaneously. See the below engineering drawing.
Q:
My optical tube has a Vixen or CG-5 dovetail plate with a dovetail length of less than 100mm. How do I mount it onto the AVX?
My optical tube has a Vixen or CG-5 dovetail plate with a dovetail length of less than 100mm. How do I mount it onto the AVX?
You’ll need to replace the dovetail plate with a compatible dovetail plate, such as the Celestron #94213 Universal Mounting Plate, CG-5.
| Manuals: | |
|---|---|
| Advanced VX Manual | Download |
| NexStar Plus Hand Control Manual | Download |
| Software & Firmware: | |
| CPWI Software | Download |
| Celestron Firmware Manager (CFM) Software | Download |
| NexRemote Telescope Control Software | Download |
| Periodic Error Correction Tool (PECTool) | Download |
| Drawings: | |
| Advanced VX Mount Dimensional Drawing | Download |
| Advanced VX Tripod Dimensional Drawing | Download |
| Other Product Files: | |
| Celestron NexStar+ Hand Control Troubleshooting Guide | Download |