Orion StarSeeker IV Instruction Manual page 16

optical tube. Well collimated optics are critical for achieving the
sharpest possible images with your telescope. Precise colli-
mation of StarSeeker IV telescopes is done at the factory, and
for the StarSeeker IV refractor and Maksutov-Cassegrains, it
should never need any further adjustment. For reflectors, on
the other hand, occasional collimation of the mirrors may be
necessary.
For details on the collimation procedure for the StarSeeker IV
114mm and 130mm reflectors, refer to the page on our web-
site (www.OrionTelescopes.com) for your particular telescope
and click on the Product Support icon. There you will find col-
limation instructions.
Note that the StarSeeker IV reflectors come with a "quick col-
limation cap" (shown in Figure 2), which is used in the col-
limation procedure. Also, you'll notice that the primary mirror of
the StarSeeker IV reflector has a tiny ring (sticker) marking its
center. This "center mark" allows you to achieve a very precise
collimation; you don't have to guess where the exact center of
the mirror is.
NOTE: The center ring sticker need not ever be removed
from the primary mirror. Because it lies directly in the
shadow of the secondary mirror, its presence in no way
adversely affects the optical performance of the telescope
or the image quality. That might seem counter-intuitive,
but it's true!
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