ASTRO-PHYSICS 600 Руководство - Страница 2
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Печатать страницу2. With the pier oriented approximately towards the pole, use the two thumbscrews at the side of the pier to make the
final fine adjustment of azimuth.
3. The pole can be viewed through the polar axis with our optional pole scope. Conversely, you may clamp a small pole
scope of your own onto the cradle plate to view the pole.
4. When the proper alignment has been achieved, snug the two side bolts lightly to secure the polar axis and recheck
alignment. If no movement has occurred, finish tightening the two bolts as much as possible to prevent movement
when the telescope and counterweights are attached.
5. Remove the hand knob and washer from the base of the counterweight shaft. Add sufficient counterweights to the
Dec. shaft to balance the telescope you intend to use. Always attach the counterweights before mounting the
telescope to prevent sudden movement of an unbalanced tube assembly, which may cause damage or injury.
Remember, counterweights are heavy and hurt like hell when they fall on your toe. Always use two hands to attach or
move them on the shaft. Reattach the hand knob and washer to the end of the declination shaft. This will help to
prevent injury if someone accidentally loosens the counterweight hand knob.
Operation of the Mounting
The mounting has a set of clutches on both axes. The large knurled knob on the back of the polar axis is the clutch for
that axis. It can be adjusted so that light pressure at the telescope will move the assembly easily, or it can be tightened
fully to prevent motion during a photographic exposure. This clutch should not be set too loose, since the motor then will
not drive the scope. The declination clutch is built into the tangent arm assembly. The thumb screws on the side of the
tangent arm engages the clutch. The Dec. motor will not drive the Dec. axis unless the declination hand knob is locked
tight. You can safely move both axes to new positions without loosening the clutches. If the scope moves by itself, even
when the clutches are tight, the scope is not counterweighted properly.
For proper operation, the telescope must be adequately counterbalanced. Start with the tube assembly balance. Loosen
the declination axis so that the tube swings freely about Dec. Slide the tube up or down in the cradle rings until it stays
put with no clutch drag. Now tighten the Dec. axis and loosen the R.A. axis. Move the counterweights up or down to
achieve balance. Remember to allow for the extra weight of diagonals, eyepieces, and finder scopes. If you find it difficult
to maintain adequate balance while changing accessories (especially with long refractors) you may want to consider
adding a sliding counterweight set to your telescope tube. Please consult the factory.
Operation of the Controller
The push button controller contains all the circuitry for driving the two motors. The four red buttons are arranged so that
left and right controls R.A., and up and down controls Dec. This is the normal orientation of objects in the eyepiece. The
buttons may be used to move an object to the desired location in the field, or to keep a guide star on a crosshair by
making tiny guiding corrections. There are two guiding modes (rates): 2x guide and 8x slew. The slew rate is for
positioning objects in the field; the guide rate is for fine guiding at high powers during astrophotography. Move the switch
to select the mode that you prefer.
Attach the power cord to the mount and plug the other end into your car's cigar lighter or into the portable battery pack.
Plug the R.A. control cable into the controller's right hand jack (as seen from above). Plug the Dec. cable into the left
hand jack. No damage will result from reversing the cables; the controller simply will not operate. With the cables in
place, one of the lamps will light to indicate operation. It is not necessary to attach the Dec. cable to the controller to run
the R.A. axis.
The controller has as SELECT button with 4 LED indicators that allow you to choose the driving rate. Three of them are
internally set for SID (sidereal), SOL (solar), and LUN (lunar). The VAR (variable) is adjustable with the right hand knob.
The other four red buttons are used to position the object in the eyepiece. Pushing the upper button will cause the object
to move "up" in the eyepiece field. If the star moves down when you push the "up" button, reverse the DEC. switch.
Pushing the right hand button will cause the star to move to the right. If it moves to the left, reverse the R.A. switch.
When properly set up, the controller buttons will cause the object to move according to your commands.
There is an LED output available in this hand controller. The output is located at the declination axis in the form of a 2-
wire phono connection. You may wire your illuminated LED reticle to this plug. Brightness is controlled with the left hand
knob on the controller labeled LED.