Camera adapter
Filter wheel assembly
Digital imager
1.25" nosepiece
1.25"1.25" eyepiece adapter eyepiece
1.25" nosepiece
Thumbscrew 
Filter wheel assembly
Figure 4a. The Multiple Filter Wheel with digital imager attached via
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 clock- wise 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 assem- bly, 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-threads
Some Orion telescopes feature focus adapters with exterior
Attaching an Eyepiece to the Filter Wheel
For visual use, you will need to attach the 1.25" eyepiece adapter to the Multiple Filter Wheel. To do this, thread the 1.25" adapter onto
Figure 4b. The Multiple Filter Wheel with 1.25" eyepiece attached.
the back (labeled) plate of the wheel assembly. Once the adapter is completely attached, unscrew the knurled thumbscrew until it is flush with the inside surface of the adapter and insert a 1.25" eyepiece. Secure the eyepiece by tightening the thumbscrew (Figure 4b).
Use
The Orion Multiple Filter Wheel features a helpful number system that allows you to quickly place the filter of your choice into the light path. Simply note the reference number of each filter during installation, then rotate the knurled wheel until the desired number is displayed in the small notch in the filter wheel housing (Figure 1).
When using the Multiple Filter Wheel, you may find it useful to leave one of the five threaded filter locations empty, as it provides an unfil- tered option for viewing or imaging.
Keep in mind that use of the Multiple Filter Wheel requires 20mm of inward focus travel. This will not be a problem for most telescope designs, but could be a problem for Newtonian reflectors.
Care and Storage
Feel free to leave your 1.25" filters installed in the wheel during stor- age. To avoid excessive dust buildup, be sure to attach the dustcaps prior to storing, and use a
The
One-Year Limited Warranty
This Orion 1.25" Multiple Filter Wheel is warranted against defects in materials or workmanship for a period of one year from the date of purchase. This warranty is for the benefit of the original retail purchaser only. During this warranty period Orion Telescopes & Binoculars will repair or replace, at Orion’s option, any warranted instrument that proves to be defective, provided it is returned postage paid to: Orion Warranty Repair, 89 Hangar Way, Watsonville, CA 95076. If the product is not registered, proof of purchase (such as a copy of the original invoice) is required.
This warranty does not apply if, in Orion’s judgment, the instrument has been abused, mishandled, or modified, nor does it apply to normal wear and tear. This warranty gives you specific legal rights, and you may also have other rights, which vary from state to state. For further warranty service information, contact: Customer Service Department, Orion Telescopes & Binoculars, 89 Hangar Way, Watsonville, CA 95076;
