ASTRO-PHYSICS 400QMD Краткое руководство по эксплуатации - Страница 6
Просмотреть онлайн или скачать pdf Краткое руководство по эксплуатации для Телескоп ASTRO-PHYSICS 400QMD. ASTRO-PHYSICS 400QMD 11 страниц. German equatorial mount with dual axis quartz micro-drive
Печатать страницуOPERATION OF THE QUARTZ MICRO-DRIVE CONTROLLER
The push button controller contains all the circuitry for driving the two motors. It will be operational when attached to
both the motors of the mount and a power source. There is no on-off switch. Power requirements are 12 to 16 volts
dc, 800ma. This can be supplied from a battery or an AC to DC converter.
If the voltage falls below 10 volts, the power light will go out and the motors
will quit running.
A very accurate quartz clock specifically calibrated for the drive gear is an
integral part of the controller. The calibration is made to the King sidereal
rate, which compensates for atmospheric refraction over a large part of the
sky. With this tracking rate, it is easier to maintain critical guiding at high
power. For the most sophisticated tracking of celestial objects, the
controller has a built-in provision for attaching a CCD imaging
camera/autoguider. Using the autoguider function, it is possible to take
long exposure astrophotos totally unattended. You can walk away from the
setup to enjoy other observing activities while your astrograph is in
operation.
The controller contains circuitry for storing the periodic error of the worm.
Depending on how well the initial guiding was done during the record
period, a very significant increase in guiding accuracy can be expected.
CABLES: Place the DC power cord into the phono plug outlet of the R.A.
motor box. Plug the short length of the "Y" cable into the R.A.
motor box and the long length into the Dec. motor box. Complete
the cable assembly by joining the control box cable to the "Y" cable.
The control box and motors are designed to work at 12 volts DC.
Suggested power sources include: portable rechargeable battery
pack, auto battery, or power converter for 110 volts with a minimum
output of 800ma. at 12VDC.
DRIVE ROTATION: If you are operating the 400 mount north of the
equator, the HEM (hemisphere) switch must be set to "N". If south
of the equator set the switch to "S".
PUSH BUTTONS: The four red buttons are arranged so that the left and
right buttons control the movement in right ascension and top and
bottom buttons control the declination. This is the normal
orientation of objects in the eyepiece field. If the star moves down
when you push the "N" button, move the DEC REV (Dec. Reverse)
switch into the opposite position. Pushing the right hand button "E"
should cause the star to move to the right. If it moves to the left,
move the RA REV (RA Reverse) switch to the other position. When
properly set up, the controller buttons will cause the object to move
according to your orientation at the eyepiece.
DRIVE RATES: The control box has three drive rates to choose from: SID
(sidereal), SOL (Solar), and LUN (lunar). Select the position
appropriate for the object under observation.
King Sidereal: Tracking rate for observing planets, stars
Solar:
Lunar:
SLEW RATES: There are two slew (rates): 8x and 16x slew rate. The slew
rates are for positioning objects in the field. Use the guide rates for
fine guiding at high powers during astrophotography. Move the
switch to select the mode that you prefer.
galaxies and other distant objects.
Tracking rate for observing the sun.
Tracking rate for observing the moon.