User manual ORION TELESCOPES & BINOCULARS DELUXESTARGAZERS7-PC

[. . . ] Deluxe Stargazer's 7 Piece Filter Set #5590 Your new Orion Stargazer's 7-piece filter set will add versatility and viewing pleasure to your astronomy experience. This set contains a variable polarizing filter, a SkyGlow Broadband lightpollution filter, four color filters, and a plastic storage case. Please read these instructions thoroughly for proper use and care of the filters. 1. [. . . ] The variable polarizing Filter will not change the color of the object being viewed and will prevent eye fatigue and loss of night vision. 100 Transmission Characteristics of Orion Broadband Skyglow Filter Transmission (%) 80 The Importance of Dark Adaptation Allowing your eyes to dark-adapt is the key to getting the most from your SkyGlow filter. Allow your eyes to dark-adapt for about 20-30 minutes before you use 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. Set up in the "shadows" of buildings and other objects. 60 20 Wavelength (nm) What You Will See The SkyGlow 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 higher-contrast image. The filter performs best on emission and planetary nebulas like the Orion and Owl nebulas in winter, and the Lagoon and Dumbell nebulas in summer. The SkyGlow filter has considerably less effect on galaxies and stars. 0 Oxygen III 40 Hydro-gen Beta 400 450 500 550 600 650 Hydrogen Alpha 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 203 Rev A 08/02 Using the Polarizing Filter Insert the eyepiece with the filter attached into the telescope and focus the image. If the image is too bright or too dark, then remove the eyepiece and rotate the knurled ring on the filter a small amount. Don't turn it too much, as the filter goes from its maximum light transmission to its minimum transmission in just a 1/4 turn of the ring. Repeat this process until you have the level of brightness that you want. #58 Green 24% Transmission Enhances: · lunar surface detail · contrast of Red Spot on Jupiter · contrast of subtle red and blue hues · melt lines around polar caps on Mars · Venusian cloud patterns Terrestrial Viewing The Variable Polarizing filter can be used during the day to reduce sunlight glare from lakes, oceans, or window glass. Simply unthread the lower half from the upper half of the filter and thread either half into a 1. 25" eyepiece. Once the eyepiece is returned to the telescope and focused, rotate it in the focuser to reduce glare. You will not be able to reduce overall brightness by using only one filter, but you will be surprised at how much control you have over reflected light. Color Eyepiece 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. #15 Deep Yellow 67% Transmission Enhances: · contrast of lunar surface · polar caps and orange desert regions on Mars · orange and red features on Saturn and Jupiter · low-contrast cloud detail on Venus 5. Cleaning and Maintenance of the Filters When not in use, the filters should be kept in their protective case. Should a filter need cleaning for any reason, use the following directions to clean the filter without damage. [. . . ] Absorbing red will reveal detail of a contrasting color, blue, in this example. This lightening of similar colors and darkening of contrasting colors enhances the detail that you see. Color filters do not actually increase the level of detail, they merely make it easier to see. Color Filter Guide #80A Medium Blue 30% Transmission Enhances: · contrast of some comet tails · lunar surface detail (significantly) · Martian polar caps and high clouds · view of Venus and Mercury in orange twilight sky · orange and purple belts and white ovals of Jupiter · subtle shadings on Saturn #25 Red 14% Transmission Enhances: · Martian surface detail in larger scopes · contrast of Mercury against blue sky · contrast and cloud definition of Venus · bluish clouds of Saturn and Jupiter · contrast of Saturn's rings Orion Telescopes & Binoculars Post Office Box 1815, Santa Cruz, CA 95061 Customer Support Help Line (800) 676-1343 · Day or Evening [. . . ]