Camera accessory for telescope control that enables PC-based operation using the Celestron NexStar RS232 PC Interface Cable. Ideal for amateur astronomers who want to pick targets and guide mounts from a laptop. Will the serial connection suit modern laptop ports and observing workflows?
⚡ At a Glance
- • Image Quality: Enables software-guided framing and tracking, supporting more accurate astrophotography sessions
- • Best for: Amateur astronomers and astrophotographers using laptop-based control and planetarium software
- • Not ideal for: Users whose laptops lack serial ports or who need native USB plug-and-play connections
RS-232 to standard serial cable connects NexStar mounts to PCs for software control. Measures 62 inches and supports downloading new data into compatible telescope databases.
Precise Telescope Control – With RS-232 serial interface
An RS-232 jack on one end and a standard serial connector on the other create a direct serial link between telescope mount and computer. Standard serial signalling carries control commands from planetarium and mount-control software.
Clicking on sky maps from a laptop moves the mount for accurate pointing and easier target acquisition. Software-driven slewing reduces manual searching and speeds up observing sessions.
Easily Update Telescope Data – Thanks to downloadable database support
Certain NexStar models accept data uploads over the serial connection, allowing new object lists and orbital elements to be written into the mount database. The cable serves as the conduit for those data transfers.
Keeping the database current simplifies planning and ensures recent objects appear in software searches. Fewer manual entries save time during observing nights.
Flexible Desktop Setup – With 62-inch cable length
A 62-inch length gives ample reach from an eyepiece-height tripod to a nearby laptop or desktop. The length reduces strain on ports and avoids tight bends in the cable.
Generous reach allows comfortable laptop placement and neater cable routing at the observing site. Less need for extension leads to a tidier, safer setup.
✨ The 4 Key Reasons for Celestron NexStar RS232 PC Interface Cable
- RS-232 Connection – Enables direct serial control from most astronomy software
- Standard Serial Connector – Works with legacy telescope ports for wide compatibility
- 62-inch Length – Positions laptop comfortably without needing extension cables in most setups
- Database Download Support – Lets supported mounts receive updated object lists directly
📋 Technical Details at a Glance
- Category: Camera accessory / Telescope interface
- Brand: Celestron
- Model: 93920
- Connector A: RS-232 jack
- Connector B: Standard serial connector
❓ Frequently Asked Questions
Q: Can I control my NexStar telescope from a laptop?
A: Yes. Interface your NexStar telescope with a laptop or PC and control the mount by clicking on sky maps displayed on the computer monitor.
Q: What connectors are on the cable?
A: An RS-232 jack is on one end and a standard serial connector is on the other, allowing a serial link to the mount and PC.
Q: How long is the cable?
A: The cable measures 62 inches, offering enough reach to position a laptop near the telescope during observing sessions.
🏆 Our Verdict
Suitable for amateur astronomers and astrophotographers who prefer laptop-based planning and control. Direct RS-232 to serial hookup and database download capability simplify software-led slewing and data updates. A modest investment that delivers reliable, long-term usefulness for NexStar setups requiring PC interfacing.
