DiscMounts Alt-Azimuth DM-6 Manuale tecnico - Pagina 6

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Azimuth axis friction adjustment

The Azimuth axis should be adjusted with a little more tension then the

Altitude axis! There should be enough tension to insure the disc are pulled

together and not held in place just by the weight of the mount. To little friction will

result in vibration caused by the axis jumping, rather then sliding on the friction

disc.

You will find that as you become familiar with the mount, adjustments will

only be made if you change your heaviest eyepiece or telescope configuration.

While the DiscMount is new you may also see minor changes, until the friction

system settles in.

Install the rear cover plate and top cover plate. The azimuth axes can be

adjusted from the front by sliding the wrench under the Altitude axis disc. The

Altitude axis can be adjusted by sliding back the top cover plate about a ¼".

Make sure the ring knobs or screws are tight. Don't forget to put the

wrench back on the magnet located under the top cover!

Some hints

1- Once the balance and friction are close, only very slight adjustments are

required. The patent pending variable friction adjustment system will stay

wherever you set it.

2-Keep the weight spread down. If the diagonal is always being used. Do the

adjustments with the diagonal installed. As long as there is friction between the

disc the telescope will not take off and crash. If a slight imbalance occurs the

telescope will slowly rotate.

3-Focus on a star in the worse case heavy configuration and measure the

position of the focuser tube. Use this position for worse case heavy adjustments.

4-I use my telescope for astronomical, nature viewing/photography, with and

without bino's! So I have marked several positions on the dovetail with a pencil

or tape depending on the configuration to be used, then it's easy to slide the

telescope in the saddle for each configuration. Friction seldom needs to be

adjusted!

5-Art and drafting supply stores sell a masking type tape that will not leave glue

on your tube when making initial adjustments and it's easy to write on. It's made

to tape paper down and be removed without damage.

6-If you're using one eyepiece such as a zoom eyepiece, or the camera is

staying in, a rough balance is all that's needed.

7-The capability of the mount is limited to the smoothness required at the highest

power (low power is more forgiving) and the maximum friction that is comfortable

to use!

8-The DM-6 has extremely high rigidity. Vibration originates from the tripod and

the mounting system used to couple the telescope to the disc. The closer the

telescope tube is mounted to the altitude disc the less tripod vibration will be felt.