User manual ORION TELESCOPES & BINOCULARS 09036

[. . . ] INSTRUCTION MANUAL Orion SpaceProbe 4. 5" EQ ® TM #9036 Equatorial Reflecting Telescope Customer Support (800) 676-1343 E-mail: support@telescope. com Corporate Offices (831) 763-7000 Providing Exceptional Consumer Optical Products Since 1975 P. O. Box 1815, Santa Cruz, CA 95061 IN 081 0998 Secondary mirror and three-vane spider (inside tube) Spider vane thumbscrew Finder scope Finder scope alignment screws Finder scope bracket Eyepiece Tube Rings Focuser Focus knob Declination slowmotion control Declination lock knob Declination (Dec. ) setting circle Counterweight shaft Counterweight Counterweight lock knob Retaining washer and knob Right ascension lock knob Right ascension (R. A. ) setting circle Tripod leg attachment bolt Primary mirror cell Collimation screws (3) Right ascension slow-motion control Azimuth lock knob Latitude lock knob Accessory tray Accessory tray bracket Leg lock bolts Tripod leg Figure 1. Space Probe 4. 5" EQ Parts Diagram 2 Congratulations on your purchase of a quality Orion telescope!Your new SpaceProbe 4. 5" EQ Reflector is designed for high-resolution viewing of astronomical objects. [. . . ] You should see the secondary mirror centered in the drawtube, the reflection of the primary mirror centered in the secondary mirror, and the reflection of the 6 secondary mirror (and your eye) centered in the reflection of the primary mirror, as is Figure 3D (see pg. If anything is off-center, follow the collimation procedure below. It helps to put a piece of white paper on the inside of the optical tube opposite the focuser. The white paper forms a bright background behind the secondary mirror, making it easier to distinguish the mirror holder from the background. Use a Collimation Tool To aid in centering your line of sight down the focuser drawtube, and in centering the mirror reflections during collimation, it is very helpful to use a precision collimating tool containing crosshairs, such as the Orion Collimating Eyepiece #3640. Aligning the Secondary Mirror With eyepiece removed, look down the open focuser drawtube at the secondary (diagonal) mirror. It should be centered in the field of view. (It helps to adjust the secondary mirror in a brightly lit room with the telescope pointed toward a bright surface, such as white paper or a wall. ) If the secondary mirror is above or below center (in the direction perpendicular to the length of the telescope, as in Figure 3A), adjust the three-vane spider by turning the spider vane adjustment thumbscrews on the outside of the optical tube. Loosen one, then tighten another one the corresponding amount. If the secondary mirror is to the left or right of center (in the direction parallel to the length of the telescope) in the focuser drawtube, loosen the three small Phillips-head alignment screws in the center hub of the spider a few turns. Now rotate the cylindrical secondary mirror holder forward or back on the large center screw, while holding the screw head with a Phillips screwdriver. When the mirror is centered in the focuser drawtube (as in Figure 3B), rotate it slightly side to side until the reflection of the primary mirror is as centered in the secondary mirror as it will get. It still may not be perfectly centered yet, but that is OK. Now tighten the three small Phillips-head alignment screws to secure the secondary mirror in that position. If the entire primary mirror reflection still is not visible in the secondary mirror (as it is not in Figure 3B), adjust the tilt of the secondary mirror further by alternately loosening one of the three alignment screws a turn or two and tightening another one. The goal is to center the primary mirror reflection in the secondary mirror, as depicted in Figure 3C. Don't worry that the reflection of the secondary mirror (the smallest circle with your eye in it) and spider are off-center (as also is the case in Figure 3C); you will fix that in the next step. Adjusting the Primary Mirror The final adjustment is made to the primary mirror. It will need adjustment if, as in Figure 3C, the secondary mirror is centered under the focuser and the reflection of the primary mirror is centered in the secondary mirror, but the small reflection of the secondary mirror (with your eye inside) is off-center. The tilt of the primary is adjusted with the three collimation thumbscrews on the back end of the optical tube. The Phillips-head screws adjacent to the collimation screws lock the mirror cell in place. Adjusting the tilt requires a "push-pull" technique involving adjustment of one collimation thumbscrew and its corresponding lock screw at a time. [. . . ] Fill a clean sink, free of abrasive cleanser, with room-temperature water, a few drops of liquid dishwashing detergent, and if possible, a capful of rubbing alcohol. Submerge the mirror (aluminized face up) in the water and let it soak for several minutes (or hours if it's a very dirty mirror). Wipe the mirror under water with clean cotton balls, using extremely light pressure and stroking in straight lines across the surface. Use one ball for each wipe across the mirror. [. . . ]