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Celestron NexStar RS-232 Cable

- Control computerized telescopes using a laptop computer or PC.
- Also used to upgrade hand control software for flash upgradable hand controls.
- For use with a USB port, you must purchase a serial to USB converter (18775).
- Cable connects to your PC's serial port.
- Length: 62"
SKU: CEL-93920
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Stock Status: IN STOCK
Ships Out Next Business Day
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Retail Price $40.00


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The Celestron NexStar RS-232 Cable connects your laptop or PC to your computerized mount. This allows you to control your scope using many popular astronomy programs.

The cable connects to your serial port. If this port is not available you can purchase a USB converter that will allow you to connect it to that port.

The Celestron NexStar RS-232 Cable cable can also be used to upgrade the control software for flash upgradeable hand controls.


Additional Info

Model Celestron NexStar RS-232 Cable
Manufacturer Celestron
Product Type RS-232 Connector for PCs and Laptops
For use with Celestron Computerized Telescopes / Mounts
Manufacturer Celestron


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Great! - Review by
Overall Score
Got this to update the firmware on the telescope hand controller, works great!
(Posted on )

Pros: light, easy to carry, price, portability

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Celestron NexStar RS-232 Cable works with Optex Serial RS-232 to USB Adapter - Review by
Overall Score
Bought the cable and Optex USB adapter to update firmware on my NexStar telescope hand control and use NexRemote software to control the telescope setup. Both the cable and adapter worked as expected after working around compatibility issues with Celestron's 'legacy' software running under Windows 10.
(Posted on )

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Item as expected, I need to get the SerialConverter for Laptop then I will know how well the cable works. - Review by
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as above
(Posted on )

Pros: light, easy to carry, portability

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RS-232 - Review by
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I received my RS-232 cable in two days which was fantastic. Great service.
(Posted on )

Pros: light, easy to carry, portability

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Celestron Limited Warranty

Celestron warrants its products to be free from defects in materials and workmanship for the length of time specified by this product to the original owner. Each product will list the warranty for it on our website.

Celestron will repair or replace the product which, upon inspection by Celestron, is found to be defective in materials or workmanship and within the definitions of the limits described below.

This warranty is effective January 1, 2012, and supersedes all other warranties as noted in brochures, instruction manuals, product packaging, etc.

This warranty does not cover products that have been subject to abuse, misuse, physically damaged, altered, or had unauthorized repairs or modifications. This warranty does not cover defects due to normal wear and tear and other conditions.

Celestron shall use reasonable efforts to repair or replace any binocular or spotting scope covered by this warranty within thirty calendar days of receipt. If it takes longer, the customer will be notified.

If warranty problems arise, or if you need assistance in using your product, please contact our Customer Service.


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