Hobym Observatory Crux140 Traveler, Руководство пользователя

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HOBYM Observatory
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13. Frequently Asked Questions
 It does not guide well: There may be several reasons for low guide quality:
1.
The cable of guide CCD is not properly fixed
2.
The guide CCD is not securely fixed
3.
The payload for CRUX is exceeded or counterweight is not properly used
4.
Smoking nearby the mount
5.
There is a source of heat or an entrance where the guide camera is facing.
6.
Seeing is poor
7.
The focus of the guide CCD is not clear
8.
The guide star is too bright
9.
The guide is too dark
10.
The guide star is located at the edge of the guide CCD.
11.
There was too little movement during the guide calibration
12.
There was too much movement during the guide calibration
13.
The guide exposure was too long
14.
The guide exposure was too short
15.
Guiding speed is too fast for the focal length
16.
Guiding speed is too slow for the focal length
17.
The lens or the primary mirror of the guide telescope is not securely fixed
18.
The focal length of the guide telescope is too long
19.
The focal length of the guide telescope is too short
 What is the safe payload?
-
When the CRUX mount is appropriately loaded, the mount should not be slipped when the
telescope is mounted, the declination is completely parallel to the ground, and the power is
turned off. In case of the telescope is being slipped, the counterweight may be needed. The
safe payload for the mount is the load that does not make it be slipping, even when the power
is off.
-
When the power is supplied, the torque generated by the electromagnetic of the motor may
allow additional load, but this load should not be considered safe payload.
When testing, put your hands under the telescope to prevent any unexpected collision.
 What is the amount of periodic error?
-
The periodic error of the CRUX mount is about ±20 seconds, the same as that of a harmonic
gear. In the case of high magnification observations, the object seen by the eyepiece may be
wobbling about the diameter of the Saturn or the Jupiter. This is much larger than the periodic
error of EM200, which is about ±7 seconds. The biggest advantage of the harmonic gear
mount is that it has no backlash and a large payload compared to the weight of the mount. In
general, photography using the harmonic gear mount presupposes a guided shooting. When
taking a guided shot, its advantages are maximized, unlike the usual worm wheel mount. The
Titan TCS has a built-in PEC function. The user can take the most advantage of harmonic
gear mount using PEC function in that it eliminates the backlash.
 ASCOM Driver for CRUX series
-
The ASCOM Driver designed for Titan TCS is available. It can be downloaded from the
Download page of the HOBYM Observatory homepage. Please upgrade the old firmware to
the latest version before using it.