|
I run my portable setup using 5m USB extension leads. Before I got my external power supply cable for my 350D I found that if the battery in the camera was anything much less than full, there would be some drop-outs (connection loss, files come back zero size, etc). I think it's related to cable length, temperature (cold nights) and the canon battery strength.
I don't have the problem anymore as I power the 350D from my 12v SLA.
Something I'd considered doing was just having 1 USB extension between laptop and telescope, a hub at the telescope, then short leads to the devices. I would make the hub a powered hub so that it's got plenty of grunt. Pretty much any hub could be run from a 12v SLA with some voltage converter thrown in to get to the 5v or whatever they require.
I would have gone down the line of having an intermediatory hub in the first place if my devices didn't grow one by one over time, slowly leading to more cables.
Roger
|