User manual ORION TELESCOPES & BINOCULARS 09402

[. . . ] INSTRUCTION MANUAL Orion SkyView Deluxe 4. 5" EQ ® TM #9402 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. B 0199 Finder scope Finder scope alignment screws (6) Finder scope bracket Secondary mirror and three-vane spider Eyepiece Focus knob Tube ring mounting bolt Declination slow-motion control Declination setting circle Declination lock lever (not pictured) Latitude lock lever (not pictured) Counterweight shaft Counterweight Counterweight lock knob Retaining washer and knob Azimuth adjustment knobs (2) Right ascension slow-motion control Latitude adjustment knob Latitude Scale Tripod leg attachment bolt Accessory tray bracket Accessory tray Tripod leg Leg lock bolt Focuser Tube rings Tube ring clamps Primary mirror cell Collimation screws (3) (not shown) Right ascension lock lever Right ascension setting circle Polar axis finder scope Rubber foot Figure 1. SkyView Deluxe 4. 5" EQ Parts Diagram 2 Congratulations on your purchase of a quality Orion telescope. Your new SkyView Deluxe 4. 5" EQ is designed for high-resolution viewing of astronomical objects. [. . . ] 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 straight down the open focuser drawtube at the secondary (diagonal) mirror. (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 not centered in the focuser drawtube (in the direction parallel to the length of the telescope), loosen the three small alignment screws in the center hub of the spider several turns. Now hold the secondary mirror holder stationary (be careful not to touch the secondary mirror!), while turning the central Allen-head bolt. Turning the bolt clockwise will move the secondary mirror toward the front opening of the optical tube, while turning the bolt counter-clockwise will move 7 the secondary mirror toward the primary mirror. When the secondary mirror is centered in the focuser drawtube (as in Figure 4B), rotate the secondary mirror holder slightly side-to-side until the reflection of the primary mirror is as centered in the secondary mirror as it will get. Now tighten the three small alignment screws to secure the secondary mirror in that position. If the entire primary mirror reflection is not visible in the secondary mirror (as it is not in Figure 4B), adjust the tilt of the secondary mirror 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 4C. Don't worry that the reflection of the secondary mirror (the smallest circle, with your eye reflected in it) and spider are off-center (as also is the case in Figure 4C); 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 4C, 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 screws on the back end of the optical tube. The collimation screws can be turned with a Phillips-head screwdriver. The three Allen-head screws between the collimation screws lock the mirror cell in place. Then try tightening or loosening one of the Phillips-head collimation screws one turn. Look into the focuser and see if the secondary mirror reflection has moved closer to the center of the primary mirror reflection. Repeat this process on the other two collimation screws, if necessary. It will take a little trial and error to get a feel for how to tilt the mirror in this way to center the reflection. (It helps to have two people for primary mirror collimation, one to look in the focuser while the other adjusts the collimation screws. ) When the adjustment is complete, screw in the three Allen-head lock screws until they just make contact with the mirror cell, to secure the mirror tilt. The view through the Collimating Eyepiece should now resemble Figure 4D. [. . . ] To clean the primary mirror, carefully remove the mirror cell from the telescope. This is done by removing the three Phillips-head screws on the side of the mirror cell. Do not attempt to remove the mirror from the cell--it has been secured in place by both clamps and adhesive. Be careful not to touch the front surface of the mirror with your fingers! [. . . ]