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Filter wheel assembly to camera T-ring or imager Knurled lock ring 1.25" nosepiece 1.25" nosepiece Orion® 1.25" Multiple Filter Wheel #5520 Camera adapter Congratulations on your purchase of a quality Orion accessory. The Orion Multiple Filter Wheel allows use of up to five 1.25" filters without the time-consuming and sometimes frustrating process of removing an eyepiece or imaging system every time a different filter is needed. With its innovative design and compatibility with 1.25" Orion filters, the Orion Multiple Filter Wheel lets you dial in the details of virtually any celestial object with a simple turn of the wheel. Figure 1. The Multiple Filter Wheel Filter wheel assembly 1.25" eyepiece adapter 1.25" nosepiece Camera adapter Hex key Notch Front panel Hex key Figure 2. Partial disassembly of the filter wheel. Parts List 1 Filter wheel assembly 1 1.25" nosepiece 1 Camera adapter 1 1.25" eyepiece adapter 1 Hex key Filter Installation Use the supplied hex key to unthread the four socket head screws of the front (non-labeled) panel of the filter wheel assembly (Figure 2). Be sure to place the screws in a safe place so they do not become lost. Once all four screws have been removed, gently separate the front plate from the filter wheel. Install the 1.25" filters of your choice into the tray simply by threading them into the filter tray. You may wish to note the number designation of each installed filter for convenient reference during use. You may find it useful to leave one of the five threaded filter locations empty, providing an unfiltered option for viewing or imaging. Once you have installed all the filters you wish to use, carefully place the filter tray back into the wheel assembly. Be sure the small plastic tab fully registers with the central hole of the wheel assembly so that it “clicks” into place. Position the rear plate so that the opening is aligned with the opening of the front plate. Complete installation by reattaching the rear plate of the filter wheel assembly with the socket head screws. If you are installing an individual filter or swapping one filter for another, you can avoid partial disassembly of the filter wheel. To install an individual filter, unthread the 1.25" nosepiece from the assembly to expose the internal filter tray. Rotate the tray so the desired filter location is shown. Install the 1.25" filter by placing it on the filter tray and rotating it clockwise with your fingertips. Orion 1.25" filters feature a knurled rim which will prove helpful for this type of installation. Be careful not to touch the actual filter surface. Note: individual filter installation without disassembly may not be convenient for all users, especially those with large fingers! Attaching a Camera to the Filter Wheel The Multiple Filter Wheel can be extremely useful for astro-imaging with a camera body, be it a SLR camera, CCD, or CMOS device. To attach a SLR camera to the filter wheel, use the included camera adapter and an optional T-ring for your SLR model. Attach the side of the camera adapter without the knurled lock ring to the rear (labeled) plate of the wheel assembly by rotating it clockwise until tight. Now thread your SLR camera T-ring onto the exposed T-threads (Figure 3). Note: The filter wheel arrives with the camera adapter pre- installed. If you are using a digital imager that features T-threads, you can attach it directly to the Multiple Filter Wheel. If your digital imager has a 1.25" nosepiece, remove it to expose the T-threads. Now sim- Customer Support (800) 676-1343 E-mail: support@telescope.com Corporate Offices (831) 763-7000 89 Hangar Way, Watsonville, CA 95076 Providing Exceptional Consumer Optical Products Since 1975 © 2008-2010 Orion Telescopes & Binoculars OrionTelescopes.com IN 313 Rev D 10/10 Digital imager Camera adapter Filter wheel assembly 1.25" nosepiece 1.25" 1.25" eyepiece adapter 1.25" nosepiece eyepiece Thumbscrew Filter wheel assembly Figure 4a. The Multiple Filter Wheel with digital imager attached via T-threads. ply thread the imager onto the camera adapter, and then thread the adapter onto the rear (labeled) plate of the filter wheel assembly (Figure 4a). You can lock your camera or digital imager in a preferred position by using the camera adapter's locking ring. Once you have positioned your camera or imager, rotate the knurled locking ring counter clockwise until it locks the camera or imager into place. Attaching the Filter Wheel to a Telescope Now that you have installed your 1.25" filters into the wheel assembly, it is time to attach the filter wheel to your telescope. Using the 1.25" nosepiece If your telescope features a 1.25” focuser, adapter, or diagonal the easiest way to attach the Multiple Filter Wheel is by using the included 1.25" nosepiece. Thread the nosepiece onto the front plate of the wheel assembly. Now simply insert the nosepiece into your telescopes’ 1.25" focuser or accessory and secure by tightening the thumbscrew. Using T-thre...