Celestron 21046 Buku Petunjuk - Halaman 5
Jelajahi secara online atau unduh pdf Buku Petunjuk untuk Teleskop Celestron 21046. Celestron 21046 8 halaman. Powerseeker telescope series
Juga untuk Celestron 21046: Brosur & Spesifikasi (4 halaman), Spesifikasi (4 halaman)
Halaman Cetak
1.
Locate a distant daytime object and center it in a low power eyepiece in the main telescope.
2.
Look through the finderscope and take notice of the position of the same object.
3.
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.
1.
Loosen the pan handle (9) by twisting it counterclockwise one full turn.
2.
Loosen the Azimuth locking screw (13) on the PowerSeeker
3.
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.
1.
Once you have found an object in the telescope, turn the focusing knob (8) until the image is sharp.
2.
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.
3.
To achieve a truly sharp focus, never look through glass windows or across objects that produce heat waves,
such as asphalt parking lots.
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.
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 PowerSeeker
magnification, use the following formula, in which FL = focal length:
Therefore, if you use the 20mm eyepiece your magnification is 700/20 = 35x. The same formula can be applied to any
of your eyepieces.
Important!
Magnification through any telescope has its limits. These limits are determined by the laws of optics and the nature of
the human eye. Most of your viewing will be done in the range of 35x to 120x. 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.
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60 telescope has a focal length of 700mm and comes with a 20mm 1¼" eyepiece. To calculate
Magnification =
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70 only.
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FL (telescope) in mm
FL (eyepiece) in mm
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