2 replies to this topic

[dale wilson]

What are aux ports 3 & 4 used for?  How are they incorporated into an imaging train?  Can they be adapted to usb?  What options are out there to make practical use of these ports?  Does anyone have a wiring schematic on the electronics?

Lastly, has anyone ever ran cables through the mount to add power and usb ports where aux 3/4 are?

Fishing for ideas.  Thanks!

[mlord]

AUX3/AUX4 are the "two additional Aux ports" referred to in the CGX-L manual (quoted below).

 

 

 

How are they incorporated into an imaging train?

They are not.  They provide power and communications for Celestron or third-party electronic accessories.

 

 

Can they be adapted to usb

You mean, as an alternative to the USB port of the hand-controller for CPWI, ASCOM etc.?  Yes, if the right accessory (HomeBrew Gen3, aka "HBG3") is plugged into any of them.

 

 

What options are out there to make practical use of these ports?

Celestron Focus Motor, Celestron Smart Dew Controller, Celestron StarSense AutoAlign or AutoGuider, SkyPortal WiFi dongle, HomeBrew Gen3, etc.

 

Has anyone ever ran cables through the mount to add power and usb ports where aux 3/4 are?

They already have power (+12V), and they already have a good use as portals to the mount's internal communications bus.

 

 

Does anyone have a wiring schematic on the electronics?

The electronics are fairly simple in any of Celstron's mounts.  The AUX port wiring varies by mount type, but shares a common pin-out and basic interface:  https://rtr.ca/hbg3/aux_bus.html

 

 

Fishing for ideas.

See here:

https://www.cloudyni...usbrelay/page-1

https://rtr.ca/hbg3/

https://rtr.ca/hbg3/whatelse.html

Edited by mlord, 25 April 2025 - 09:02 AM.

[dale wilson]

I appreciate the response.  Gives me pause on what to do to.  

What I am hoping for, is cable management for ap.  Like what is on the SW eq8-r declination.  USB and 12v power out.