Bresser PIRSCH 25-75X100 Manual De Instrucciones página 6

Parts
1. Eyepiece / Rubber eyecups
2. Zoom
3. Focus wheel, focus ring
4. Optical tube
5. Tripod adapter thread
6. Main tube clamp
7. Fastening screw
8. Sunshade
Setting up the spotting scope
Ideally the spotting scope should be on a tripod of suitable load-
bearing capacity (obtainable as a Bresser accessory). Your spotting
scope has a tripod thread to DIN standard (5). It can therefore be
attached to any tripod with a DIN standard thread.
Important:
Remove the protective caps from the main tube and eyepiece.
Make sure they are reinserted after every use.
Controls
• Focus Knob: Look into the eyepiece (1) and rotate the focus
knob (3) in either direction to focus on an object.
• Zoom: Rotate the zoom control (2) to zoom in or out on an
object; then use the focus knob (3) to refine the focus.
4
• Moving the main tube: These spotting scopes have a main
tube clamp (7) and fastening screw (8). Turn screw (8) count-
er-clockwise to undo the main tube clamp. You can then turn
the entire main tube (4) about its own axis and thus vary the
eyepiece (1) position. To fasten the main tube in the desired
position turn the fastening screw clockwise.
• Indoor Viewing vs. Outdoor Viewing: Although you may
casually observe through an open or closed window, the best
observing is always done outdoors. Temperature differences
between inside and outside air, and the low quality of window
glass can blur images through the spotting scope.
• Sun shield: Extend the sun shield (8) in strong sunshine affect-
ing visibility. Put your hand around the spotting scope aperture
ring and simply push the shield out.
Terrestrial Observing
When viewing land objects, you will be observing through heat
waves on the earth surface. You may have noticed these heat
waves while driving down a highway during the summer. Heat
waves cause a loss of image quality.
If heat waves interfere with your viewing, try focusing at low power
to see a steadier, higher quality image. Observe in early morning
hours, before the earth has built up too much internal heat.