Like Rich mentions in his post you can use Ethernet extenders or you can use USB 2.0 active extenders. I use one in my observatory to get about 30 feet via USB 2.0. Here is a link to some active extenders available through Amazon: http://www.amazon.com/s/?ie=UTF8&keywords=usb+active+extension+cable&tag=goo... Clear skies, Dale.
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah- astronomy-bounces@mailman.xmission.com] On Behalf Of Rich Allen Sent: Tuesday, December 06, 2011 8:01 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] Astro camera
The USB 1.1 spec states a maximum length of 3 meters for low-speed devices and 5 meters for full-speed. The USB 2.0 spec also states a maximum cable length of 5 meters. There are various types of repeaters to allow for much longer distances, it all depends on how much you are willing to spend. For a home to observatory, the USB over Ethernet type adapters would give you several hundred feet for about $50 + cable.
Rich
On 12/6/2011 7:32 AM, Chuck Hards wrote:
Who can tell me what's the longest practical length for the USB camera-to-computer cable? Ten feet seems awfully short, escpially if I use this in an eventual observatory.
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