Tom Richards 1200GTO
"The 180mm EDT apo had been in storage for a year or two while I
obtained the 1200GTO mount and built a suitable observatory to hold it
all. However it all came together in July 2001, as did some of the worst
of winter weather! Now that I've got such a great mount, I'm planning
a lot of variable star work, but am still at the stage of checking my
results against published data, and working out the instrumental corrections
for the scope-camera-filter combinations to obtain reliable VRI magnitudes.
One thing is clear, the lack of aperture
compared to the big SCTs is no barrier to obtaining planetary images down
to under a half arcsec resolution- I work at 0.35 arcsec/pixel. It's not
just the superior optics, it's the minimizing of scintillation by avoiding
tube currents and dome currents. And the accuracy of the drive makes it
possible to use image frames hardly larger than the planet, so that over
20 images per minute is achievable."
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