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A black serial cable with DB9 and RJ9 connectors

Ruth's sister

Ruth's sister Celestron NexStar DB9 to RJ9 Serial Upgrade Cable

SKU CH-SRVC-K3470

Connects a Celestron NexStar telescope console to a serial port using a DB9 to RJ9 cable

  • Connects telescope console to PC via DB9 to RJ9 serial link
  • Enables firmware updates and computer control for NexStar models
  • New cable ensures reliable data transfer without signal loss
  • Direct replacement upgrade cable designed for Celestron NexStar telescopes

Celestron NexStar DB9 to RJ9 Cable

This serial upgrade cable connects a Celestron NexStar telescope console to a computer using a DB9-to-RJ9 link. It lets owners of compatible Celestron mounts update firmware or control the telescope from astronomy software without proprietary adapters. The cable is supplied new and ready for immediate use.

Sustained data transfer for firmware updates

During long firmware uploads or extended guiding sessions the link maintains a steady serial stream without the drop-outs common on makeshift wiring. The fixed pin-out matches the NexStar console specification so the connection stays reliable for the full duration of multi-megabyte transfers.

How it compares

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Price $8.99
Cheaper than about 60% of the 1,208 comparable items (median $9.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How much power does the Celestron NexStar DB9 to RJ9 cable draw when the telescope runs all night?

The cable is a passive serial link with no active electronics, so it draws no measurable power of its own; only the telescope and hand controller consume electricity.

Which telescope models and hand controllers must I already own for this DB9-to-RJ9 cable to work?

It connects Celestron NexStar telescopes that have a DB9 serial port on the mount to NexStar hand controllers that use an RJ9 (4P4C) jack, such as the original NexStar 5/8, NexStar GT and early NexStar SE series.

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