User manual ORION TELESCOPES & BINOCULARS DELUXESTARGAZERS7-PC

[. . . ] Attaching the Filters Filters require a 1. 25" telescope eyepiece that can accept threaded filters. Any Orion 1. 25" eyepiece will work. Simply thread the filter into the eyepiece barrel until it is finger tight. [. . . ] Remember, the instant you glance at a bright object like a street lamp or bright flashlight bulb, your eyes lose their dark-adaptation. You have to wait another 20-30 minutes for it to return. Locate your telescope away from direct illumination by streetlights. 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. Try these objects for your first uses of the filter. 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. Re-insert the eyepiece and check the image again. 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. [. . . ] Use caution; rubbing too hard may scratch the glass. 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. Absorbing red will reveal detail of a contrasting color, blue, in this example. [. . . ]