Vixen Sphinx SXP - Manual (Page 54)

Chapter 5 APPLICATION
4
5
6
7
8
9
While looking into the opening of the polar axis scope on the declination body, turn the
declination body with the or direction key so that the objective lens of the polar axis
scope can be seen in the opening.
Loosen the altitude clamp lever and turn the altitude adjustment knob so that the indicator of
the altitude scale fits the latitude of your observing site. The mount is set at an altitude of
approximately 35 degrees at Vixen's factory.
While looking into the eyepiece of the polar axis scope, turn the focus ring until the reticle is in focus. Hold the eyepiece tube with the
other hand while you turn the focus ring.
Adjust the brightness of the illuminator for the polar axis scope so that the reticle is dimly illuminated.
Turn the time graduation circle by holding both sides of the bubble level so that the bubble is brought into the center of the level marks.
Check the difference between standard time meridian of your region (or country) and your observing site on a map of the area or by using a
GPS system.
If the observing site is east of standard time meridian, rotate the time-meridian offset scale in the direction as indicated by "E". If the
observing site is west of standard time meridian, rotate the time-meridian offset scale in the direction as indicated by "W". Turn the time-
meridian offset scale while holding the eyepiece tube with the other hand.
Example 1:
If you observe in Okinawa Japan, which is located at 127 degrees longitude, you need to offset by 8 degrees in the direction of W from the
central meridian of the Japan Standard Time after the calibration.
Example 2:
If you observe in Boston, MA, which is located at 71 degrees longitude, you need to offset by 4 degrees in the direction of E from the
central meridian of the Eastern Standard Time after the calibration.
Example 3:
If you observe in Dallas, TX, which is located at 97 degrees longitude, you need to offset by 7 degrees in the direction of W from the central
meridian of the Central Standard Time after the calibration.
Example 4:
If you observe in Los Angeles, which is located at 118 degrees longitude, you need to offset by 3 degrees in the direction of E from the
Central meridian of the Pacific Standard Time after the calibration.
6 6 8 8
9 9
Azimuth Adjustment Knob Azimuth Adjustment Knob
Azimuth Clamp Lever
Opening
Azimuth Clamp Lever
Opening
Altitude Scale
Reading Guide
Altitude Scale
Reading Guide
Eyepiece Knurled
Ring
Bubble
Line Marks
Eyepiece Knurled
Ring
Bubble
Line Marks
Date Graduation Circle
Time Meridian
Indicator
Date Graduation Circle
Time Meridian
Indicator
54