Quote:
Originally Posted by Maberly1959
thats really very inventive, i hadn't thought of a mechanical intervention to prevent my dobsonian from moving
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Thank you..
I build this dob mount from available parts, in hope it will be strong and stiff enough (as it was for the original purpose - front loader washing machine drum). It is.. sort of, but this way it will be much better.
Stability to wind blow and touch varies from case to case.. and here the obvious problem was vertical shaft - too "springy".
It is also pretty loud when stepper motors are working ( I have them mounted on rubber brackets). But, the tube resonates like the cavity of the acoustic guitar. When I remove the OTA from the mount, motors can't be heard at all.
Luckily, those vibrations are not visible even at high magnification (~400x).