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Hi
Mike,
I
can't help you a bit with the electronics, but I would recommend using a two-arm
drive instead of a one-arm design. A two-arm Type 4 (if I recall correctly
from the old S&T article) will have very little error at 30 minutes if
properly polar aligned, but I believe that with a one-arm drive you will start
to see trailing after that much time. They're are not much harder to
build, since there's only one extra part.
Regardless of which way you go, I'll be interested in seeing 4x5
wide-field shots any day!
Hello! I’d like to get some
more information regarding computerized Barndoor Trackers. As I develop
my 4x5 inch camera, it seems that exposures will need to be 10 to 30 minutes
in duration. I thought I would try a single arm barndoor tracker instead
of piggybacking it to my 8 inch LX200.
I saw Tom Kracji’s note from a
couple of years ago. I am not very code or electronics literate, but I
can follow explicit directions on making the board and working with the
computer code. Can anyone direct me to info regarding the construction
of a daughter board to connect a stepper to an old laptop, and info regarding
the code to rive the stepper? Thank you and best
regards.
Mike
Heald
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