User manual CELESTRON POWERSEEKER SQUARE 70 Instruction Manual

[. . . ] However, there are a few things to be aware of before using your telescope that will ensure your safety and protect your equipment. NEVER LOOK DIRECTLY AT THE SUN WITH THE NAKED EYE OR WITH A TELESCOPE. NEVER POINT YOUR TELESCOPE AT THE SUN UNLESS YOU'RE USING THE PROPER SOLAR FILTER. NEVER USE YOUR TELESCOPE TO PROJECT AN IMAGE OF THE SUN ONTO ANY SURFACE, OR USE AN EYEPIECE SOLAR FILTER OR A HERSCHEL WEDGE. [. . . ] The finder bracket has a small tab on its base that slides into the opening located on the left side of the telescope tube (between the silver telescope tube and the black rear cell). Once installed, you can pivot the bracket into the desired position and secure it using the locking screw. 4 Aligning the Finderscope 1. Locate a distant daytime object and center it in a low power eyepiece in the main telescope. Look through the finderscope and take notice of the position of the same object. Without moving the main telescope, turn the adjustment thumb screws located around the finderscope bracket until the crosshairs of the finder are centered on the alignment object. Finding Objects 1. Loosen the pan handle (9) by twisting it counterclockwise one full turn. Look through the finderscope and pan the telescope until the object appears in the field of view. Once it's in the field, tighten the pan handle and azimuth lock. Focusing 1. Once you have found an object in the telescope, turn the focusing knob (8) until the image is sharp. To focus on an object that is nearer than your current target, turn the focusing knob toward the eyepiece (i. e. , so that the focusing tube moves away from the front of the telescope). For more distant objects, turn the focusing knob in the opposite direction. To achieve a truly sharp focus, never look through glass windows or across objects that produce heat waves, such as asphalt parking lots. Image Orientation 1. The PowerSeeker uses an erect image diagonal to give you correct images when viewing land or celestial objects. However, the finderscope will always give inverted (up-side-down and backwards) images. Magnification The magnification (or power) of a telescope varies depending upon the focal length of the eyepiece being used and the focal length of the telescope. The PowerSeeker2 60 telescope has a focal length of 700mm and comes with a 20mm 1¼" eyepiece. To calculate magnification, use the following formula, in which FL = focal length: Magnification = FL (telescope) in mm FL (eyepiece) in mm Important! Therefore, if you use the 20mm eyepiece your magnification is 700/20 = 35x. These limits are determined by the laws of optics and the nature of the human eye. Higher powers are used mainly for lunar and sometimes planetary observing where you can greatly enlarge the image and the atmospheric conditions are near perfect. The images at extremely high powers magnify the image, but remember that the contrast will be very low due to the high magnification. For the brightest images with the most contrast, start by using the lower power eyepiece with a smaller image scale. 5 The following magnification levels can be achieved when using the standard eyepiece in conjunction with the 3x Barlow lens: PowerSeeker 602 Eyepiece Magnification 20mm 4mm 35x 175x Mag. with 3x Barlow Lens 105x 525x PowerSeeker 702 Eyepiece Magnification 20mm 4mm 45x 225x Mag. with 3x Barlow Lens 135x 675x TELESCOPE MAINTENANCE With proper care, your telescope should rarely need any maintenance work. [. . . ] CELESTRON EXPRESSLY DISCLAIMS ANY LOST PROFITS, GENERAL, SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES WHICH MAY RESULT FROM BREACH OF ANY WARRANTY, OR ARISING OUT OF THE USE OR INABILITY TO USE ANY CELESTRON PRODUCT. ANY WARRANTIES WHICH ARE IMPLIED AND WHICH CANNOT BE DISCLAIMED SHALL BE LIMITED IN DURATION TO A TERM OF TWO YEARS FROM THE DATE OF ORIGINAL RETAIL PURCHASE. Some states do not allow the exclusion or limitation of incidental or consequential damages or limitation on how long an implied warranty lasts, so the above limitations and exclusions may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. [. . . ]