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Introduction

A dew shield protects the telescope optics from moisture in the atmosphere. As the ambient temperature drops throughout the night, dew can condense and accumulate. It is always a good idea to use the dew shield, even if you don't notice a lot of moisture in the air.

  1. Locate the Astrozap label on your dew shield. This is the outside of the dew shield. Turn the dew shield over, to the inside. Locate the lighter colored, rubber strip on the edge of the dew shield. This is where the dew shield will meet the telescope.
    • Locate the Astrozap label on your dew shield. This is the outside of the dew shield.

    • Turn the dew shield over, to the inside.

    • Locate the lighter colored, rubber strip on the edge of the dew shield. This is where the dew shield will meet the telescope.

  2. Wrap the dew shield around the edge of the telescope, aligning the lighter colored, rubber edge on the dew shield with the outer edge of the telescope tube. Wrap the dew shield around the edge of the telescope, aligning the lighter colored, rubber edge on the dew shield with the outer edge of the telescope tube.
    • Wrap the dew shield around the edge of the telescope, aligning the lighter colored, rubber edge on the dew shield with the outer edge of the telescope tube.

  3. Wrap the dew shield so that the edges overlap. Press down on the overlapping edges to secure the velcro.
    • Wrap the dew shield so that the edges overlap.

    • Press down on the overlapping edges to secure the velcro.

  4. When it comes time to remove the dew shield, simply slide it directly off the end of the tube. When it comes time to remove the dew shield, simply slide it directly off the end of the tube. When it comes time to remove the dew shield, simply slide it directly off the end of the tube.
    • When it comes time to remove the dew shield, simply slide it directly off the end of the tube.

Conclusion

This material is based upon work supported by the National Science Foundation under Grant No. 1212159. Any opinions, findings and conclusions or recommendations are those of the author(s) and do not necessarily reflect the views of the NSF.

Brittany McCrigler

Member since: 10/15/2012

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