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In the recent past, my optical
astronomy has involved using a Synta
Sky-Watcher 6 inch f /8 refractor (150mm aperture
with a 1200mm focal length)
mounted on a Meade DS-16 German Equatorial pier mount.
The refractor tube balanced nicely as shown in the picture
due to the declination tangent arm being mounted backwards
where it is easily reachable for manual adjustment! Full size 611x590 pixel version of picture at left: SkyW_6f8_DS-16mount.jpg |
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A closeup of the refractor tube is also shown. The refractor
uses a two element achromat lens which appears nicely coated and
was factory rated at 1/6th wave SA if I remember correctly. And
after a straightforward collimation and startesting I believe
it is at least that good, allowing me to see a really nice
transit of Io on Jupiter. Typically several bands on Jupiter
are seen and Saturn's rings are really nicely split with
Saturn's shadow also seen on the rings. All high power
observations were aided by a Sirius Optics 1.25 inch MV-20
low pass filter. Images of a high voltage power tower about
a km away from my house with the Synta and the MV-20 clearly
showed the individual bolts with increased sharpness and
much of the violet cast removed! I traded the Synta and a
Kenwood TS-440S for a Kenwood TS-850S ham radio in 2004.
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To check out my Mathematical Physics research, visit my physics web site at URL: http://www.physics.mq.edu.au/~dalew/
Copyright 2003, 2004, 2005, 2006 by Dr Dale A. Woodside and Macquarie University, all rights reserved.
Last Modified: May 16, 2006 Dale Alan Woodside (dalew@physics.mq.edu.au) Web page Copyright © 2003, 2004, 2005, 2006 by Dr Dale A. Woodside