User manual ORION TELESCOPES & BINOCULARS STARGZER5PC B

[. . . ] Please read these instructions thoroughly for proper use and care of the filters. 1. Attaching the Filters Filters require a 1. 25" or 2" telescope eyepiece that can accept threaded filters. Simply thread the filter into the eyepiece barrel until it is finger tight. [. . . ] A Moon filter solves this problem by reducing the amount of light (transmission: 13%) that gets to your eye without losing any important detail or making any color changes to the image. With the Moon filter in place, you can view lunar surface details such as maria, craters, mountains and rilles. 100 Transmission Characteristics of Orion Broadband Skyglow Filter Transmission (%) The Importance of Dark Adaptation Allowing your eyes to dark-adapt is the key to getting the most from your SkyGlow Broadband filter. Allow your eyes to darkadapt for about 20-30 minutes before you use the filter. Once the pupils in your eyes open up, you'll be able to take full advantage of the benefits of the filter. Remember, the instant you glance at a bright object like a street lamp or bright flashlight bulb, your eyes lose their dark-adaptation. You'll have to wait another 20-30 minutes for it to return. Locate the scope away from direct illumination by streetlights. Set up in the "shadows" of buildings and other objects. 80 60 20 Wavelength (nm) What You Will See The SkyGlow Broadband filter improves the contrast between sky and object but will not actually make the object brighter. Expect a very dark sky background and a somewhat dimmer but highercontrast image. The filters perform best on emission and planetary nebulas like the Orion and Owl nebulas in winter, and the Lagoon and Dumbell nebulas in summer. Try these objects for your first uses of the filter. The SkyGlow filter improves the contrast of most objects, but has considerably less effect on galaxies and stars. 0 400 450 500 550 600 650 700 Common Light Pollution Emissions q q q vs q q qv q Mercury Street Lights, s Sodium Street Lights, v Ionized Oxygen Skyglow Customer Support (800) 676-1343 Email: support@telescope. com Providing Exceptional Consumer Optical Products Since 1975 Corporate Offices (831) 763-7000 P. O. Box 1815, Santa Cruz, CA 95061 IN 202 Rev B 02/03 Oxygen III 40 Hydro-gen Beta Hydrogen Alpha 4. Color Filters The color filters will enhance your visual and photographic observation of the Moon and planets, allowing you to see greater contrast between planetary details of differing colors. How They Work Planetary surface details and atmospheric phenomena reflect sunlight as contrasting colors which we see as details on the disc of a planet. A color eyepiece filter absorbs a specific color of reflected light: for example, red. [. . . ] Before cleaning with fluid and tissue, blow any loose particles off the surface with a blower bulb or compressed air. Then apply some cleaning fluid to a tissue, never directly on the optics. Wipe the glass gently in a circular motion, then remove any excess fluid with a fresh lens tissue. [. . . ]