instruction Manual Orion® AstroView™ Equatorial Mount #9822 AstroView Equatorial Mount Customer Support (800) 676-1343 E-mail: support@telescope.com Corporate Offices (831) 763-7000 Providing Exceptional Consumer Optical Products Since 1975 89 Hangar Way, Watsonville, CA 95076 IN 192 Rev.
Declination slow-motion control cable Right ascension slow-motion control cable Declination lock lever Right ascension lock lever Polar axis finder scope Latitude scale Large counterweight Small counterweight Counterweight lock knobs Counterweight shaft Latitude adjustment T-bolts “Toe saver” Tripod leg Accessory tray bracket Accessory tray Leg lock knob Figure 1. The AstroView Equatorial Mount.
Congratulations on your purchase of a quality Orion mount. Your new AstroView Equatorial Mount was developed to work with many different telescope optical tubes. Designed for astronomical use, this precision mount allows convenient “tracking” of celestial objects as they move slowly across the sky, so they remain within your eyepiece’s field of view.
Date circle Ring with engraved time meridian indicator mark Polar scope alignment thumbscrew (3) R.A. setting circle lock thumbscrew Pointer R.A. setting circle Meridian offset scale Polar scope housing Polar axis finder scope Figure 3. The polar axis finder scope installed in the right Figure 2. To adjust the latitude angle of the equatorial mount, loosen one of the two latitude adjustment T-bolts, then tighten the other. 7.
Figure 4a Figure 4b Figure 4c Figure 4d Figure 4a, b, c, d. Proper operation of the equatorial mount requires that the telescope tube be balanced on both the R.A. and Dec. axes. (a) With the R.A. lock lever released, slide the counterweight along the counterweight shaft until it just counterbalances the tube. (b) When you let go with both hands, the tube should not drift up or down. (c) With the Dec.
Little Dipper (in Ursa Minor) Big Dipper (in Ursa Major) N.C.P. Polaris Cassiopeia ter Poin Stars Figure 6. To find Polaris in the night sky, look north and find the Big Dipper. Extend an imaginary line from the two "Pointer Stars" in the bowl of the Big Dipper. Go about five times the distance between those stars and you'll reach Polaris, which lies within 1° of the north celestial pole (NCP). Azimuth fine adjustment knobs Tripod attachment knob Figure 7.
Aligning the Polar Axis Finder Scope Aligning the polar axis finder scope so that it will accurately point at the true north pole is a two-step procedure. First, the polar axis finder must be rotated in its housing so that the small circle in which Polaris will be placed is in the proper initial position. Next, the polar axis finder must be adjusted so that it points directly along the mount’s R.A. axis. We will start by aligning the polar finder rotationally. Refer to Figure 3. 1. Loosen the R.A.
For example, if it was November 1 at 9 PM, standard time, you would rotate the telescope in R.A. until the line above the “21” (9 P.M.) on the R.A. setting circle lines up with the long line between the “10” and “11” on the date circle. The long line indicates the first day of the higher numbered month, i.e. the line between “10” and “11” marks November 1st. Optional Motor Drives for Automatic Tracking An optional DC motor drive can be mounted on the R.A.
Figure 8a Figure 8b Figure 8c Figure 8d Figure 8a,b,c,d. This illustration shows the telescope pointed in the four cardinal directions: (a) North, (b) South, (c) East, (d) West. Note that the tripod and mount have not been moved; only the telescope tube has move on the R.A. and Dec. axis. circles for finding objects; the thumbscrew is only needed for polar alignment using the polar axis finder scope.
One-Year Limited Warranty This Astroview Equatorial Mount is warranted against defects in materials or workmanship for a period of one year from the date of purchase. This warranty is for the benefit of the original retail purchaser only. During this warranty period Orion Telescopes & Binoculars will repair or replace, at Orion’s option, any warranted instrument that proves to be defective, provided it is returned postage paid to: Orion Warranty Repair, 89 Hangar Way, Watsonville, CA 95076.
