SVBONY 70/400, Руководство пользователя

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to four seconds. Then, use an optical cleaning solution and white tissue paper to
remove any remaining debris. Apply the solution to the tissue and then apply the
tissue paper to the optics. Low pressure strokes should go from the center of the
lens (or mirror) to the outer portion. Do NOT rub in circles!
You can use a commercially made lens cleaner or mix your own. A good cleaning
solution is isopropyl alcohol mixed with distilled water. The solution should be 60%
isopropyl alcohol and 40% distilled water. Or, liquid dish soap diluted with water
(a couple of drops per one quart of water) can be used.
Occasionally, you may experience dew build-up on the optics of your telescope
during an observing session. If you want to continue observing, the dew must be
removed, either with a hair dryer (on low setting) or by pointing the telescope at the
ground until the dew has evaporated.
If moisture condenses on the inside of the optics, remove the accessories from the
telescope. Place the telescope in a dustfree environment and point it down. This will
remove the moisture from the telescope tube.
To minimize the need to clean your telescope, replace all lens covers once you
have finished using it. Since the cells are NOT sealed, the covers should be placed
over the openings when not in use. This will prevent contaminants from entering the
optical tube.
Internal adjustments and cleaning should be done only by the
SVBONY
repair
department. If your telescope is in need of internal cleaning, please call the factory
for a return authorization number and price quote.
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TECHNICAL SPECIFICATIONS
TECHNICAL
SPECIFICATIONS
Optical Design
Aperture
Focal Length
Focal Ratio
Optical Coatings
Finderscope
Diagonal
Eyepieces
Barlow Lens – 3x 1.25"
Apparent Field of View
Angular Field of View
Linear Field of View :ft/1000 yards
Near Focus w/20 mm Eyepiece
Photo Tripod
Altitude Locking Knob
Maximum Length
Model
SVBONY SV501P
Refractor
70 mm (2.8")
400 mm
f/5.7
Multi-coated
5x24
Correct-Image Prism -45° 1.25"
20 mm 1.25"
N/A
20 mm @ 50°
20 mm @ 2.5°
20 mm @ 131/44
19´ (5.8 m)
SVBONY SV101 Tripod Black
Yes
138cm/54.3in.
6