Celestron SkySync GPS Accessory - All Computerized Celestron Models

  • Improved Speed and Accuracy of Alignments with this 16-channel GPS!
  • Time and Date Automatically Updated.
  • Plugs into the AUX Port on the Base of the Telescope.
  • Compatible for All Non-GPS Celestron Computerized Telescopes.
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  • Regular price $209.95
  • $149.95
  • You save: $60.00 (28%)

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Celestron SkySync GPS Accessory - All Computerized Celestron Models

The Celestron SkySync GPS Accessory improves the pointing accuracy of your initial star alignments by plugging this 16 Channel GPS module into any non-GPS Celestron telescope's drive base port. The SkySync will automatically download the exact time, date longitude and latitude from the nearest global positioning satellite.

Celestron SkySync GPS Accessory Features

  • Compatible with all non-GPS Celestron computerized telescopes.
  • Plugs into your telescope's hand control or auxiliary port.
  • Links up and automatically downloads information from orbiting global positioning satellites.
  • Kit includes SkySync GPS Accessory and two mounting straps.


Free ShippingYes
Module TypeGPS Module
Warranty2 Year Warranty
Customer Reviews
4.5 Based on 6 Reviews
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Marshall T.
United States United States
Works perfectly but...

On March 3, I purchased from OPT a Celestron CGX-L tripod and mount, a Celestron 11" HD Edge scope, a Starsense alignment camera, and several accessories. I was not able to get Starsense alignment to align the scope so I purchased a Celestron polar alignment scope and this GPS accessory. It worked perfectly, feeding my Longitude and Latitude and UTC time to the mount and Starsense. Unfortunately again, that did not solve my problem with Starsense. I used the autoalign feature of Starsense over 20 times on a night with < 10% cloud cover. Each time Starsense solved the plate images but then stated "Alignment Failed not good enough for pointing the telescope". I have contacted OPT to help me resolve the problem / replace the mount but they are unable to get resolution from Celestron. I'm hoping to have the problem resolved before clear skies become more common.

Mark I.
United States United States
Good, solid tech that works

The SkySync does its thing and then gets out of the way — just what you would want tech like this to do. I acquires GPS signals very quickly, gets the time, location and date and pushes that info to your compatible scope. Then, nothing. That is, it does not interfere with using the scope after that, which is exactly what it was designed to do. The unit is small and solid, comes with two different mounting straps and has a nice coiled cord for connecting to the telescope. Celestron did a good job on this and I expect it to last for years.

United States United States
This works well, but needs a different kind of strap.

This needs a different kind of strap for this mount.

Calvin C.
United States
Great service

Excellent service!

Paul O.
United States
Celestron SkySync from OPT

The SkySync I bought was to replace an apparently failed unit, so I'm unsure about how reliable the SkySync is; it will have to prove itself. However, OPT did an excellent job in fulfilling the order and shipping promptly. Also I was very happy to get the item on sale.

Great for this Newbie

This GPS really helps me align more quickly and accurately. I use it with the AVX mount.