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26 I ENGLISH
larger the number), the lower the eyepiece magnification.
The shorter the focal length (i.e., the smaller the number),
the higher the magnification. Generally, you will use low-
to-moderate power when viewing. For more information on
how to determine power, see the section on “Calculating
Magnification.”
Installing the 6x30 Finderscope
The 5”, 6”, 8” and 9.25” Schmidt Cassegrain telescopes come
with 6x30 finderscopes used to help you locate and center
objects in the main field of your telescope. To accomplish this,
the finder has a built-in cross-hair reticle that shows the optical
center of the finderscope. To install the finderscope:
1. Attach the bracket to the optical tube. To do this, place
the curved portion of the bracket with the slot over the
two holes in the rear cell. The bracket should be oriented
so that the rings that hold the finder are over the telescope
tube, not the rear cell. Start threading the screws in by
hand and tighten fully with a screwdriver.
2. Partially thread-in the three nylon thumbscrews that hold
the finder in place inside the bracket. Tighten the screws
until the nylon heads are flush with the inner diameter of
the bracket ring. Do NOT thread them in completely, or
they will interfere with the placement of the finder. (Having
the screws in place when the finder is installed will be
easier than trying to insert the screws after the finder
has been installed).
3. Slide the rubber O-ring over the back of the finder
(it will NOT fit over the objective end of the finder).
It may need to be stretched a little. Once on the main
body of the finder, slide it up about one inch from the
end of the finder.
4. Rotate the finder until one cross hair is parallel to the
R.A. axis and the other is parallel to the DEC axis.
5. Slide the eyepiece end of the finder into the front of
the bracket.
6. Slightly tighten the three nylon thumb screws on the
front ring of the bracket to hold the finder in place.
7. Once on, push the finder back until the O-ring is snug
inside the back ring of the finder bracket.
8. Hand tighten the three nylon tipped thumb screws
until snug.
Installing the 9x50 Finderscope
The 8” EdgeHD and the 11” Schmidt-Cassegrain telescopes
come with 9x50 finderscopes used to help you locate and
center objects in the main field of your telescope. To
accomplish this, the finder has a built-in cross-hair reticle that
shows the optical center of the finderscope. The finderscope
must first be mounted in the included quick-release bracket
then attached to the rear cell of the telescope. To install
the finderscope:
1. Locate the finderscope mounting bracket attached to
the bottom portion of the finder bracket. Loosen the two
thumb screws to slide the mounting bracket from the
finderscope bracket.
2. Find the two holes in the rear cell of the telescope on the
top left, when looking from the back of the tube.
3. Place the mounting bracket over the two holes of the rear
cell on the optical tube.
4. Insert the screws through the bracket and into the
rear cell.
WARNING: If you remove the mounting bracket, do not
completely thread the screws back into the rear cell of the
telescope. The screws may be long enough to obstruct the
movement of, and possibly damage, the primary mirror.
With the bracket firmly attached to the telescope, you are
ready to attach the finder to the bracket.
1. Slide the O-Ring over the back of the finderscope and
position it on the tube toward the objective end of the
finderscope.
2. Slide the eyepiece end of the finderscope into the front
ring of the bracket (the front ring is the one without the
adjustment screws), then through the back ring. It may be
necessary to push down the spring loaded pivot screw so
that the finder will pass through the back ring.
3. Push the finder back until the O-Ring is snug inside the
front ring of the finder bracket.
4. Hand tighten the two alignment thumb screws until they
make contact with the finderscope.
Finderscope
Nylon Adjustment Screw
Finder Bracket
Rear Cell
Alignment
Screws
Quick Release
Screws
Pivot
Screws
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