ASTRO-PHYSICS 900 German Equatorial Руководство - Страница 12
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MOUNT MAINTENANCE AND ALIGNMENT
Under normal operating conditions, no maintenance is required. Every 12 months, the clutch knobs (four for Dec. and
four for R.A.) should be removed, and one or two drops of light oil (3-in-1 household oil) should be put in the exposed
hole. If the R.A. and Dec. axes are attached together for a long time in outside conditions, i.e., in a permanent
observatory, then the mating surfaces should be lightly oiled or greased – if you expect to get them apart again after ten
years.
Your 900 mount is a precision instrument with very accurate worm and wheel adjustments. Please be careful if you
place the mount on a flat surface, i.e. the ground or trunk of your car. The gear alignment may be affected if the R.A.
and Dec. motor/gear box assemblies sustain undue lateral force. This is true of any fine instrument. We suggest that
you transport and store the mount in a case or in a well-padded box
NOTE:
If your battery runs low, the declination motors will stop first, although the R.A. will continue to drive until the
power is drained.
If any problems occur, please don't hesitate to contact Astro-Physics for assistance.
Recommended reading list from our staff:
The Backyard Astronomer's Guide, Terence Dickinson and Alan Dyer, Camden House Publishing, 1991. The authors,
both former editors of Astronomy magazine, offer practical insight into astronomical equipment, finding your way around
the sky, polar alignment, using setting circles, and astrophotography. This book provides excellent explanations and is
well organized and illustrated.
All About Telescopes, Sam Brown, Edmund Scientific Company, 1975. This has excellent Information regarding the
principles of mount construction and operation, using setting circles, eyepiece projection, etc. Illustrations and formulas
galore. Many of the instruments pictured are outdated, however the underlying principles are timeless.
Norton's 2000.0 Star Atlas and Reference Handbook, edited by Ian Ridpath, J. Wiley Publishers, 1989. Star maps,
information regarding polar alignment of German equatorials and observing techniques.
09-10-96
ASTRO-PHYSICS INC
11250 Forest Hills Road
Rockford, IL 61115
Telephone: (815) 282-1513
Fax: (815) 282-9847
www.astro-physics.com
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