- 11 -
V
Align the Red Dot Viewfinder
(Fig. 15)
Once the red dot viewfinder is mounted on the OTA, it is time to align it so that it and the
telescope will be centered on the same spot in the sky when it is time to use it.
Although the process can be tedious, it is important to follow through on all of the steps to
avoid later frustrations that can ruin an observing session.
We recommend doing that first alignment in the daytime using a land-based target.
Be careful to do this in an area where you will not accidentally point your telescope at or
near the Sun, (see Sun Warning in this Manual).
After you have set up your telescope and attached the red dot viewfinder, find an easy,
stationary target that is at least 200 meters away. We suggest using a streetlight or the top of
a telephone pole.
Insert the eyepiece into your telescope’s eyepiece holder and center the chosen target in the
telescope’s eyepiece. Look through the red dot viewfinder and loosen or tighten the adjusting
screws until the dot is precisely centered on the same target as the telescope.
Once night falls, center the Moon or a bright star in your finder scope then check the view in
your scope. Make small adjustments as needed.
Fig. 15
Usage
=
Summary of Contents for Explore FirstLight 10" f/5 Dobsonian
Page 19: ...19...
