I apologize up front for being a long question but want to make sure everything is checked off so there is no follow up questions. I just found Astroberry a couple of days ago, downloaded and installed on a RPi 3B+ headless. I successfully connected via VNC and successfully connected my Svbony SV105 to said Pi. Now that I can go completely wireless I am going to attach this rig to my Celestron Nexstar 102SLT. The handset of the telescope has the old RJ6 connector and I have the RS-232 to RJ6 cable I used to connect to an old laptop. I am planning on buying a RS-232 to USB converter. My question is does the RS-232 to USB cable matter? In doing research I saw there are different chipsets and I want to make sure I am getting the correct one. Once again I apologize for the long post and thank you all in advance.

Hi D4rk,

Clearly, the best way is to ask to your nearest astronomy store ...

I've often used these ones on my laptop to connect to network equipment.

www.amazon.co.uk/StarTech-com-USB-Serial...lific/dp/B00GRP8EZU/

On the Raspberry Pi these will usually show up as a device most easily accessed via /dev/serial/by-id/<id-of-device>

I'd recommend using that path, rather than the /dev/ttyUSB0x devices, as they are consistent after each reboot, and don't move around (if, like me, you have 3-4 serial devices on the Pi).