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Message: <blockquote data-quote="BF Hammer" data-source="post: 823652" data-attributes="member: 48483">I should elaborate on my issues with the SNAP port. I believe Skywatcher just had in mind to get it to fire Canon DSLRs and assumed it would be fine with others. For the 60 second exposure time the circuit has to hold a switch (or more likely a transistor) closed for 60 seconds. If it is designed on the cheap side, I can foresee some electrical noise from driving the motor appearing on that shutter release circuit. End result being the shutter thinks the release switch opened and the exposure stops early.It's just my own conjecture. I have watched Big Clive tear down enough China goods on YouTube to be suspicious like that.</blockquote>