Orion 100 EQ Finder scope bracket Finder scope Focusing lock ring, Nylon thumbscrews Tensioner

Finder scope bracket

Finder scope

Focusing lock ring

Nylon thumbscrews

Tensioner

Figure 2b. Pull back on the tensioner and slide the finder scope into its bracket until the O-ring is seated in the bracket ring

Figure 2a. The 6x30 finder scope

4.Next, tighten the wingnuts at the top of the tripod legs, so the legs are securely fastened to the equatorial mount. Use the wrench and your fingers to do this.

5.Orient the equatorial mount as it appears in Figure 1, at a latitude of about 40°, i.e., so the pointer next to the latitude scale is pointing to the line at “40”. To do this, loosen one of the latitude adjusting T-bolts and then tighten the other latitude adjusting T-bolt until the pointer and the “40” line up. The declination (Dec.) and right ascension (R.A.) axes many need re-positioning (rotation) as well. Be sure to loosen the RA and Dec. lock levers before doing this. Retighten them once the equatorial mount is properly ori- ented.

6.Thread the counterweight shaft into the equatorial mount at the base of the declination axis until tight. Make sure the casting at the top of the bar is threaded clockwise as far as it will go before attaching the shaft.

7.Remove the knurled “toe saver” retaining screw on the bot- tom of the counterweight shaft and slide the counterweight onto the shaft. Make sure the counterweight lock knob is adequately loosened so the metal pin inside the counter- weight is recessed enough to allow the counterweight shaft to pass through the hole. Position the counterweight about halfway up the shaft and tighten the lock knob. Replace the toe saver on the end of the bar. The toe saver prevents the counterweight from falling on your foot if the lock knob happens to come loose.

8.Attach the two tube rings to the equatorial mount using the mounting ring attachment knobs. Place a lock washer, then a flat washer, on the shaft of each knob. With the washers attached, push the knob up through the holes in the top of the equatorial mount and rethread them into the bottom of the tube rings. Tighten the knobs securely. Open the tube rings by loosening the knurled ring clamps.

Focus lock thumbscrew

Eyepiece

90° star diagonal	Camera T-ring	2" adapter
	attachment threads	1.25" adapter

Figure 3. The Focuser of the AstroView 100

9.Lay the telescope optical tube in the tube rings. Position the optical tube in the rings so that the 1/4"-20 mounting block on the underside of the tube is centered relative to the rings. Close the rings over the tube and tighten the knurled ring clamps finger-tight to secure the telescope.

10.Attach the two slow-motion control cables to the R.A. and Dec. worm gear shafts of the equatorial mount by position- ing the small screw on the end of the cable over the indented slot on the worm gear shaft. Then tighten the screw. Use the short slow-motion control for the R.A. axis, it will stick out sideways from the mount. The longer slow- motion control moves the telescope on its Dec. axis and goes just under the optical tube, towards the focus wheels.

4