User manual ORION TELESCOPES & BINOCULARS 05680

[. . . ] For large diameter mirrors, you may need to tape several sheets of paper together. Lay the primary mirror on the paper and trace its outline with a pencil (Figure 1). Next, cut out the circle you have just traced with a pair of scissors. Fold the paper circle into quarters by folding the circle precisely in half, and then folding it in half again (Figure 2). [. . . ] Secure it in place with the thumb screw on the drawtube. Then turn the LaserMate on by turning its thumb screw clockwise. Before looking into the optical tube, take a sheet of white paper and place it across the front aperture of the telescope. If you see a red laser spot on the sheet of paper, then your telescope is considerably out of collimation (Figure 8). Take note of the position of the red spot, and be careful not to place your eye in that position. Remember, it is safe to view the reflection of red laser spot the laser beam off mirror surfaces as long as the beam is not directed into your eye. Figure 8: Place a piece of white paper in front of the open tube. If you see a laser spot on the paper, be careful not to place your eye in that position. Look down the front of the optical tube. Remember to keep your eyes clear of any direct reflections of the beam. Notice the red spot on the surface of the primary mirror itself; this is the laser beam being reflected from the secondary mirror off the surface of the primary mirror. The red spot should be centered on the primary mirror's surface. If it isn't, adjustments will be need to be made to the secondary mirror's tilt (Figure 9). This is done with the secondary mirror collimation screws, usually located on the central hub of the telescope's spider vane assembly. Figure 5: Affix the ring label to the mirror surface through the hole in the template. Figure 6: The primary mirror's center is now marked, and it is ready to be reinstalled. Before You Begin Collimating Using the LaserMate Accurate collimation of your telescope's optics using the LaserMate will most easily be achieved if you do a rough collimation of the optics with your eye first. This is because if the optics are grossly misaligned, it may be confusing to interpret which surfaces the laser is being reflected off of. Refer to your telescope's instruction manual for the procedure on how to do a rough collimation with your eye. Note About Centering the Secondary Mirror Under the Focuser Centering the secondary mirror under the focuser is an adjustment that can be made with the aid of the LaserMate, but it requires marking the center of the secondary mirror in 2 laser spot on primary mirror drawtube should appear similar to Figure 11. The alignment of the mirrors should not need to be adjusted again unless the telescope is moved. If you handle the telescope gently during transport, then only slight adjustments will need to be made to the mirrors. Use the LaserMate before each observing session to check and make Figure 11: When collimated, the view looking straight down the focuser drawtube should appear similar to the above image. Before After Figure 9a, 9b: To center the red laser spot on the primary mirror, you will need to adjust the tilt of the secondary mirror. Make adjustments to the telescope's secondary mirror collimation screws until the reflection of the laser beam is centered on the primary mirror. If you have marked your primary mirror, then the red spot should fall directly in the center of the collimation target. [. . . ] When centered, the dimmer return laser spot will disappear in the much brighter exiting laser spot. person to look at the position of the red spot, the other to make adjustments to the collimation screws. Collimation of the optical system is now complete, and the view with your eyes when looking straight down the focuser Service at 1-800-447-1001 or visit our website at www. telescope. com to order a new set. In addition, the warranty is also void if the laser housing is removed from the unit, the product's label is removed, or any other attempt is made to change the laser's alignment. [. . . ]