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I got mine from ShoeString - Doug has always been prompt (and cheaper than JMI - who he designed similar products for).
So far I have got the GPINT auto-guider converter and DSUSB focuser from ShoeString and the PCFC Focuser from BinTel / JMI - as they had immediate stock when I had an urge!
ShoeString seem fine by me.
PS
I started set-up for piccys around 8pm last night and go distracted by family duties. When I went out at 10:30pm I found my scope was pointing at almost the exact same point in the sky (around M42) so the tracking was excellent - unguided M42 had barely moved off centre in my 22mm eyepiece for the C9.25 in 3.5 hours!
Secondly I noticed when I turned PhD autoguiding on - it sometimes crashes the PC! Ugh. I also noticed as I framed the CCD's on the Meg and SCT they poit to slightly different patches of the sky - must get them aligned just a tad better.
Thirdly when I connected the Canon to its external power supply I noticed there was a tingling in my hand holding the camera body - big worry if the powersupply isn't properly earthed. I don't desire any form of electrocution thank you!
But I noticed when I came back to seriously get going it was cloud central - so I spend until 2am fighting with trying to get bulb exposures going until I called defeat. So I pack the lab up and do the final household chores and write my query - then by 2:30am when I finished (in more ways then one) I glance outside to see not a cloud in the sky!!! Major aggrevation.
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