9
Figure 2-15
Figure 2-16
Figure 2-17
To align the finderscope with the main telescope:
1.
Remove the front lens cap of the telescope and both caps from the finderscope. Locate a distant
daytime object (at least ¼ mile/0.4km away) and center it in the main telescope.
2.
Look through the finderscope (the eyepiece end of the finderscope which has the smaller diameter
lens) and take notice of the position of the same object.
3.
Without moving the main telescope, turn the thumbscrews of the finderscope brackets until the
crosshairs of the finderscope are centered on the object chosen with the main telescope. This may
take a number of attempts to get it properly centered as you loosen one and tighten another of the
thumbscrews of each bracket.
4.
If the image through the finderscope is not sharp (out of focus), you will need to adjust the
finderscope so you can obtain a sharp focus through it. Locate the ring on the finderscope (it is
between the objective lens and the finderscope bracket) and turn it counterclockwise to loosen it a
few turns. Then turn the front objective piece in or out until a sharp focus is achieved. Lastly,
tighten the ring.
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The diagonal is a prism that diverts the light at a 45° angle to the light path of the telescope. This allows you
to observe in a position that is more comfortable than if you had to look straight through. This diagonal is an
erect image model that corrects the image to be right side up and oriented correctly left-to-right which is
much easier to use for terrestrial observing. Also, the diagonal can be rotated to any position which is most
favorable for you. To install the diagonal and eyepiece:
1.
Remove the cap at the rear of the telescope by unthreading it counterclockwise – Figure 2-18.
2.
Insert the small barrel of the diagonal into the rear opening of the telescope. Make sure the
thumbscrew on the telescope does not protrude into the opening before installation. Once the
diagonal is inserted, tighten the thumbscrew to hold it in place – Figure 2-19.
3.
Put the barrel of the eyepiece into the diagonal and tighten the thumbscrew of the diagonal to hold
the eyepiece in place and tighten the thumbscrew – Figure 2-20. Again, when doing this make
sure the thumbscrew is not protruding into the diagonal before inserting the eyepiece.
4.
The standard eyepiece can be changed to other optional eyepieces (for lower or higher power) by
reversing the procedure in step 3 above.
Figure 2-18
Figure 2-19
Figure 2-20
