ASTRO-PHYSICS 400QMD Посібник із швидкого старту

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MODEL 400QMD PARTS LIST

400QMD Equatorial Head with stepper motors on right ascension and declination axes

Stainless counterweight shaft with washer stop and black plastic knob (5/16-18 threaded rod)

Dual axis quartz micro-drive control box

"Y" connector cable

D.C. power cord (cigarette lighter adapter)

Black plastic knobs with ¼-20 threaded rod

1ea. Hex keys 3/16" and 5/16"

Red caplugs

Piece of Velcro (to attach hand controller to surface of your choice)

In order to fully assemble and use your mount, you will need the following items sold separately: cradle plate, pier or

tripod, portable rechargeable battery pack and counterweights. Several sized and types are available for your

selection. Many of these items will be discussed throughout these instructions.

Several additional options will help to enhance your observing experience: polar axis telescope with illuminator; high

resolution mounted encoders and JMI computerized digital setting circles, Santa Barbara Instrument Group CCD

imaging camera/autoguider.

INTRODUCTION

If you were to take a long exposure photograph with

Polaris (often called the North Star) in the center of the

field, you would discover that all stars seem to revolve

around Polaris. This effect is due to the rotation of the

earth on its axis. Motor driven equatorial mounts were

designed to compensate for the earth's rotation by

moving the telescope at the same rate and opposite to

the earth's rotation. When the polar axis of the

telescope is pointed at the celestial pole (polar aligned)

as shown in the diagram on the right, the mount will

follow (track) the motions of the sun, moon, planets,

and stars. As a result, the object that you are

observing will appear motionless as you observe

through the eyepiece or take astrophotos.

For visual observation, a rough sighting of Polaris

through the hole in the polar axis is fine. However if

astrophotography is your goal, accurate polar

alignment is critical.

We recommend that you familiarize yourself with the

assembly and basic operation of the mount indoors.

The temperature will be comfortable, the mosquitoes at

bay, and you'll have enough light to see the illustrations

and read the manual. Please take particular note of

counterbalancing, use of the clutches and operation of

the hand controller.

ASTRO-PHYSICS

400QMD GERMAN EQUATORIAL MOUNT WITH

DUAL AXIS QUARTZ MICRO-DRIVE (400QMD)