Celestron 102mm, Инструкция по эксплуатации

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8
Attaching a Camera
To attach a camera to your Wide View Spotter:
1. Remove all visual accessories.
2. Thread the proper T-Ring onto the built-in T-Adapter threads at the end of the eyepiece
holder.
3. Mount your camera body onto the T-Ring the same as you would any other lens.
Focusing The Camera
The focusing mechanism is the same photographically and visually. However, due to the high
magnification, the micro prism focuser in your camera may "black out." If this is the case, you
will have to use the ground glass portion of your focusing screen, which itself may be dark. For
the best results, take your time. Look at your subject carefully to make sure that you have the
sharpest possible focus. To achieve a very sharp focus, consider using a focusing magnifier.
These devices are readily available from your local camera store.
If you can not get a sharp focus, check to see if your subject is closer than the near focus distance
listed in the "Technical Specification" section.
Storing Your Wide View Spotting Scope
To minimize the need to clean your spotting scope, replace all lens covers after use. The spotting
scope can be left on a tripod for display purposes or returned to its shipping carton. Since the rear
cell of your Wide View spotting scope is not sealed, the eyepiece or protective cover MUST be
placed over the opening in the rear cell when not in use. This will prevent contaminants from
entering the optical system.
Technical Specifications
Below is pertinent technical information on your Wide View spotting scope that
you may find useful.
80mm Wide View 102mm Wide View
Optical System Refractor Refractor
Aperture: 80mm (3.15") 102mm (4")
Focal Length: 400mm (16") 500mm (20")
Near Focus: with low power eyepiece ~13' ~17
Useful Power Range: 12x to 189x 15x to 240x
Linear Field of View: 131' with 20mm Eyepiece
(53' with 10mm Eyepiece) 131' with 25mm Eyepiece
(53' with 10mm Eyepiece)
Angular Field of View: 2.5° with 20mm Eyepiece
(1.0° with 10mm Eyepiece) 2.5° with 25mm Eyepiece
(1.0° with 10mm Eyepiece)
F/ratio: f/5 f/5
Length: 15.5" 21"
Weight: 4 lbs. 11 oz 5 lbs.
Note : All specifications are stated for the Wide View spotting scopes using the standard
accessories. These specifications are approximate and may change without notice.