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Cartes losing scope connection

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#1 A. Viegas

A. Viegas


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Posted 23 June 2013 - 08:23 AM

Anyone have this problem with Cartes du Ciel losing the connection with the Celestron scope? Been happening all the time now and never before? The only change I made was a different USB hub at the scope. Could this have made such a difference? I am using a prolific chipset USB-rs232 dongle.


P.S. This is 4 repeater hub USB2.0 chain. So 20m + 2 5m non repeater segments, for total distance of about ~80ft. If my camera dropped out, then I would say its the length of the chained cables... but it does not. Just the CdC connection... :question:

#2 cn register 5

cn register 5

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Posted 23 June 2013 - 08:41 AM

Simple, it's the Prolific dongle.

I've got one and it's OK when it's connected directly to a USB port on the PC and using a short RS232 cable BUT once you use a longer RS232 cable or connect through hubs and repeaters it gets very unreliable.

Try a FTDI adaptor, they seem to be much better.


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