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FEATURES AND SPECIFICATIONS
for mounts shipped starting in April, 2007, beginning with Ser. # M10053
R.A. worm wheel:
5.9”, (150 mm) 225 tooth aluminum
Dec. worm wheel:
5.9”, (150 mm) 225 tooth aluminum
Worm gear:
Brass, 0.709” (18 mm) diameter
R.A. shaft:
2.36”, (60 mm) diameter
R.A. Bearings
3.1”, (78 mm) diameter
R.A. thrust surface:
4.1”, (104 mm) diameter
Dec. shaft:
2.36”, (60 mm) diameter
Dec. Bearings
3.1”, (78 mm) diameter
Dec. thrust surface:
4.1”, (104 mm) diameter
Periodic Error
7 arc seconds, peak-to-peak, (+/- 3.5 arc sec) or less guaranteed
Counterweight shaft:
14.5”, (368 mm) overall, 13.6”, (345 mm) useable length, 1.125”, (29 mm) diameter,
stainless steel, removable with knob and safety washer
Optional Counterweight Shaft
10.7”, (272 mm) overall, 9.625”, (244 mm) useable length, 1.875”, (48 mm) diameter,
stainless steel, removable – requires One-piece Washerless Safety Stop (M12676).
Stores inside declination axis for travel and uses same weights as 900 and 1200
series
mounts.
Latitude range:
0 to 70 degrees with or without
polar scope attached.
Azimuth adjustment:
Approximately 25 degrees (+/- 12.5 deg. from center)
Motors:
Zero-cogging servo motors
Power Consumption:
0.4 amps at the sidereal rate
2 amps both motors slewing
Power requirements:
12 VDC, range 11.5 to 16
Weight of mount:
Total of Equatorial Head -28.5 lbs. (13.0 kg)
Dec axis - 11.5 lbs. (5.2 kg)
R.A axis - 16.0 lbs. (7.3 kg)
Pier Adapter – 1 lb. (0.5 kg)
Counterweight shaft with washer and knob - 4.1 lbs. (1.9 kg)
Optional 10.7” x 1.875” Counterweight Shaft with Safety Stop – 7.7 lbs. (3.5 kg)
Capacity of Mount:
Approximately 45 lbs. (20kg) - telescope and accessories (not including
counterweights),
depending
on
length.
Will accommodate Astro-Physics and similar
refractors up to 160mm f7.5, 8” - 11" SCT or 6” – 8” Mak Cas. These are only
guidelines. Some telescopes are long for their weight or very heavy for their size and
will require a larger mount. Note: As weight of scope and accessories increases,
proper balancing becomes more critical. See section on balancing for more
information.
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