Vixen Sphinx SXP - Manual (Page 83)

Chapter 5 APPLICATION
Mount Type
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This allows choosing a mount type either “Equatorial with Polar Setting” or “Equatorial without Polar Setting”.
Note: If the atmospheric reflection correction is in operation, it may affect the motion of RA and DEC.
* Establishing star alignment in several points spread across the sky will make the GoTo slewing and tracking more accurate.
* With the use of this option you can enjoy Go-To slewing easily without performing a polar alignment.
* Since the mount is in motion without polar alignment, the tracking is done not only in the direction of R.A but also in the direction of DEC
for correction. Choosing this option is not suitable for long exposure astro-photography.
* Since the mount is polar aligned, even a few points of star alignment will make the Go-To slewing very accurate. Adding points of the
star alignment will make the Go-To slewing perfect.
* The tracking at sidereal rate is made only in the direction of R.A and the motion in the direction of DEC is cut out. Because of this, the
accuracy of the tracking depends on how the mount has been aligned to the north (or south) celestial pole correctly. If the polar
alignment is inaccurate, your telescope will shift in the direction of DEC during the tracking.
In the “Mount Setting” menu, choose “Mount Type with the or direction key and press the key (or the key) to call up the
dialog box.
Choose your desired option the or
direction key. Press the key to enter
and leave the
The setting is defaulted to “Equatorial without Polar Setting”
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Equatorial without Polar Setting
Equatorial with Polar Setting
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