Your cart is empty.
Your cart is empty.4.3 out of 5 stars
- #249 in Serial Cables
The Celestron RS-232 Cable is used to connect your PC or computer to NexStar computerized telescopes via a port in the hand control. The large adapter attaches to the serial port of your computer. If your computer does not have a serial port, you will need a Serial-to-USB Adapter (#18775) so that you can connect the RS-232 Cable via a USB port instead. The other end of the cable terminates in a phone-jack style plug, and simply snaps into the port designed for this purpose.
Once you have connected your computer and telescope, you can update your hand control firmware. The latest updates can be found in the Support section of this website.
Connecting a computer to your telescope will also allow you to navigate the telescope from your computer screen! There are many software programs available today that will not only display the night sky as it appears on any chosen observing night, but that will allow you to send your telescope to any object on the screen with the click of a button.
AlejandroVS
Reviewed in the United States on September 17, 2024
reliably worked.
J. Ellingson
Reviewed in the United States on February 10, 2024
Quick ship, reliable cable.
Kevin Geary
Reviewed in the United States on April 17, 2024
I was able to update the firmware in the handset and the motor drive firmware of my Celestron 127SLT. I used an old Windows XP laptop that had a hardware serial port.
Customer
Reviewed in Canada on September 24, 2023
Worked great
Laura Sorensen
Reviewed in the United States on July 8, 2020
Purchased this product for my son's Celestron 80LCM Nexstar+ Telescope.Some things I learned.1. Also pick up the USB to Serial Adapter if you don't have one or your PC/Laptop does not have a Serial Port.2. once you connect the USB to Serial Adapter go to Device Manager and check to make sure the USB to Serial installs correctly, I had to select the device and download/install the drivers to use the USB to Serial Device.3. Download the CFM (firmware Updater) from Celestron's Website, and extract the files to your desktop (I tried putting them in a folder on a drive but the program did not like it and recommended running from the desktop)4. Run the CFM to update the hand Controller, if it has issues there is a help file that will open to assist with connection5. once you start the CFM it downloads the files it needs and once it sees the hand controller you can click the option to update the firm ware, a few minutes wait and it is done.6. open your night sky software, in my case I used Celestron's CPWI, once started I selected connection and hand controller, now the telescope can be aligned and run through the software.I hope this helps. Good Luck
Alejo Macias
Reviewed in Mexico on December 22, 2019
Mami k celestreon no diga k. No se puede usar elEl telescopio nexstar 8
Eckardo
Reviewed in Germany on November 3, 2019
So, hiermit muss ich mich entschuldigen...Das Kabel funktioniert einwandfrei und erfüllt seinen Zweck zu 100%!!!Ich hatte zuerst eine schlechte Rezension geschrieben, weil ich den Fehler im Kabel vermutete, was sich nun jedoch als MEIN FEHLER erwiesen hat.Denn das Problem waren die Lötpunkte im Handcontroller. Da waren wohl ein oder mehrere nicht ganz so gut, wie sie sein müssten?! Jedenfalls habe ich alle Chips nachgelötet und siehe da... Das Update hat auf Anhieb funktioniert und der Controller ist auf dem aktuellen Stand.Also wirklich gute Ware, zu einem sehr guten Preis.Volle Punktzahl... ;-)
Ignacio Alonso
Reviewed in Spain on November 22, 2018
Necesario para conectar el portátil a un telescopio motorizado y usarlo por ejemplo con software de tipo planetario como Stellarium. Lo compré a buen precio, si no, es un accesorio un poco caro para lo que es. Lo uso con un Celestron SLT 127 y va perfecto.
Steve
Reviewed in the United States on February 27, 2016
Not much to say other than it seems to be well made. It is a simple RS232 adapter cable that adapts from the RJ22 plug on the bottom of the hand controller and converts to a standard DB9 plug. One thing to note, if you are ordered an Advanced VX mount or telescope, you do NOT need to order this cable. I was under the impression that it did not come with one, so I ordered this. When I received the AVX, there was one in the box. So now, I have a spare :)
Keir
Reviewed in the United Kingdom on September 25, 2015
Saved me having to return my telescope to the store to fix the corrupted handset software. Fast postage too.
Choctaw genealogist
Reviewed in the United States on October 29, 2014
The cable worked just fine. After the hand controller firmware failed, updating the hand controller for the Evolution telescope was problematic because instructions were sketchy and confusing. The Evolution has an Az-El mount, and the firmware kept updating for an equatorial mount. I received a shipper from Celestron and returned the hand controller, which they reprogrammed and returned to me. Now it works correctly. In the process, I discovered I may have been doing one step incorrectly, which they did differently to get the desired result. In the interim, I used a WiFi Tab 2 with SkyPortal to operate the telescope. Once operational, the Evolution telescope is great.
Peter Besenbruch
Reviewed in the United States on February 11, 2013
The cable does what it claims: It provides a 5' long link from the Celestron Nexstar hand controller to the RS-232 port of your computer. That few, if any laptops (or desktops) have an RS-232 port doesn't seem to matter to Celestron. You will need a serial port to USB adapter, meaning more expense and complication. If you want a lot of expense, Celestron will be happy to sell you one. I got .Another comment. Five feet is quite short for use in the field. Some USB adapters add length, but you may also want to budget for another extension cable.Finally, I control my mount with a Linux powered netbook running Debian Linux, and the program Cartes du Ciel. In addition I installed the package Indi-bin. The USB device that pops up on the computer is usually /dev/ttyUSB0. You will need to ensure your user is in the "dialout" group. Even then you may run into trouble "writing" to the USB device. The simplest workaround is to make /dev/ttyUSB0 universally writable by issuing the following command as root, or by prefacing the following command with "sudo":chmod 666 /dev/ttyUSB0
ElementOp
Reviewed in the United States on December 2, 2013
What can I say? This product does it's job well. I can now control my CG5-GT from my laptop via ascom. the celestron nexcontroller program allows you to do your entire polar alignment routine from you laptop, and you have PHD connection with your autoguider whihc allows you to record PEC data from your favorite pec program. I can now go out and balance my mount in the evening before it gets cold and operate everything from inside to do astrophotography without going out in the cold. I use an rs232 serial connection with a 3/4 express card adapter with my laptop, and an extension cable to reach my mount out in the yard. All I need now is a motofocus contorller and I will be staying alot warmer this winter!
Recommended Products
$12.99
$ 5 .99 $5.99
$10.99
$ 4 .99 $4.99