Loading ...
Loading ...
Loading ...
10 I ENGLISH
GENERAL OBSERVING HINTS
When using any optical instrument, there are a few things to remember to ensure you get the best possible image.
• Never look through window glass. Glass found in household windows is optically imperfect, and as a result, may vary in
thickness from one part of a window to the next. This inconsistency can and will affect the ability to focus your telescope. In
most cases, you will not be able to achieve a truly sharp image. In some cases you may actually see a double image.
• Never look across or over objects that are producing heat waves. This includes asphalt parking lots on hot summer days or
building rooftops.
• Hazy skies, fog, and mist can also make it diffi cult to focus when viewing terrestrially. You’ll see much less detail in objects
when observing in these conditions.
NOTE:
Your telescope was designed for terrestrial observation as well as celestial viewing.
TELESCOPE MAINTENANCE
While your telescope requires little maintenance, there are a few things to remember to ensure your telescope performs
at its best.
CARE AND CLEANING OF THE OPTICS
Occasionally, dust and/or moisture may build up on the telescope’s objective lens. Take extra care when cleaning your
telescope’s optical components to avoid damaging them.
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. You can also use a few drops of liquid
dish soap diluted into one quart of water.
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 dust-
free 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 fi nished using it. Since the cells are NOT
sealed, adding the lens covers will help prevent contaminants from entering the 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.
Loading ...
Loading ...