Celestron Ambassador 80 AZ Brass Telescope Ambassador Series Manual (English, - Page 13

While your telescope requires little maintenance, there are a few things to remember that will ensure your telescope performs at its best. Care and Cleaning of the Mechanical Parts To keep the brass finish looking clean and bright, use brass polishing material. For the wood on the tripod, use furniture polish. Follow the instructions given with the polishing materials. Care and Cleaning of the Optics Occasionally, dust and/or moisture may build up on the objective lens or eyepiece of the telescope. Special care should be taken when cleaning any instrument so as not to damage the optics. If dust has built up on the optics, remove it with a brush (made of camel's hair) or a can of pressurized air. Spray at an angle to the glass surface for approximately two 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. 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 Celestron repair department. If your telescope is in need of internal cleaning, please call the factory for a return authorization number and price quote. AMBASSADOR SPECIFICATIONS Specifications Optical Design Aperture Focal Length Focal Ratio Optical Coatings Finderscope Diagonal Model # 21033 Ambassador 50AZ Refractor 50mm (2.0") 360mm f/7.2 Fully Coated n/a n/a Model # 21034 Ambassador 80AZ Refractor 80mm (3.1") 800mm f/10.0 Fully Coated 6x30 Erect Image Erect Image 45° 1.25" Eyepieces Apparent FOV - w/standard eyepiece Angular Field of View w/standard eyepiece Linear FOV w/standard eyepiece - feet @1000yds / meters @1000m Near Focus -- feet/meters H22mm (16x) Built-In 25° 1.6° 84/28 50/15 P25mm 1.25" (32x) 45° 1.4° 74/25 100/31 Mount Altitude Lock Azimuth Locking Knob Altazimuth yes yes Altazimuth yes yes Optical Tube Length 24" (61cm) Telescope Weight - pounds/kilograms 12.5/5.7 Note: Specifications are subject to change without notice or obligation 33" (84cm) 28.5/12.9 13