Celestron 80ED, Руководство пользователя

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, 2 2835 Columbia Street, Torrance, CA 90503 • Phone (310) 328-9560 • Fax (310) 212-5835
Using the Rubber Eyecups
The zoom eyepiece includes a soft rubber eyecup for eyeglass wearers. Fold
down the rubber eyecups to observe the full field of view when wearing
eyeglasses.
Focusing
To focus slowly rotate the focuser knob until the image in the
eyepiece is clear and sharp. Refocusing is usually required if the
power is changed
Changing the Magnification
Rotate the magnification ring around the zoom eyepiece to change the
power level of the spotting scope. Refocus as needed.
Photography
To use your spotting scope as a telephoto lens, remove the rubber eyecup from the top of the eyepiece. Thread an
optional t-ring for your make and model of 35mm camera onto the T-threads located at the top of the eyepiece. Attach
your 35mm camera body to the t-ring. Celestron spotting scopes have fixed apertures and, as a result, fixed f/ratios. To
properly expose your subjects photographically, you need to set your shutter speed accordingly. Most 35mm SLR
cameras offer through-the-lens metering which lets you know if your picture is under or overexposed. Adjustments for
proper exposures are made by changing the shutter speed. Consult your camera manual for specific information on
metering and changing shutter speeds.
Model 52248 52250 52251 52252 52253
Series Ultima 65 Ultima 80 Ultima 80ED Ultima 100 Ultima 100ED
Magnification
18-55x 20-60x 20-60x 22-66x 22-66x
Aperture (mm)
65 80 80 100 100
Focal Length (mm) 386 480 480 540 540
Eyepiece 7-21mm Zoom 8-24mm Zoom 8-24mm Zoom 8-24mm Zoom 8-24mm Zoom
Angular Field of
View (FOV°)
1.7° - .73° 2° - 1° 2° - 1° 1.8° - 1° 1.8° - 1°
Linear FOV
(ft. @ 1000 yd)
89@18x 38@55x
105@20x
53@60x 105@20x
53@60x
95@22x 53@66x 95@22x 53@66x
Eye Relief (mm) 18@18x 18@20x 18@20x 18@22x 18@22x
Near Focus 20ft@18x 27ft@20x 27ft@20x 33ft@23x 33ft@23x
Coating
Multi-Coated Multi-Coated Multi-Coated Multi-Coated Multi-Coated
Length (in) 13 16 16 19 19
Instrument
Weight (oz)
37 57 57 72 72
SPECIFICATIONS
35mm Camera
body T-Ring
(Optional
)
Eyepiece with rubber
eyecup removed
Spotting
Scope