ASTRO-PHYSICS GTO KEYPAD Addendum - Page 10

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GTO Quick Star Drift Method of Polar Alignment Quick Reference Sheet

1.● Rough●align●the●mount

2.● Slew●to●star●near●the●zenith.●This●will●be●the●"Altitude●Star."

a)● Double●check●correct●mount●orientation.

b)● Line●up●finderscopes●crosshairs●with●direction●buttons

c)● Center●the●star●with●the●direction●buttons

d)● Re-calibrate.

3.● Set●Meridian●Delay:●

**Star●in●west●(RA●value●<●"z"●or●LST●value)●–●advance●

<1W>●●●●

**Star●in●East●(RA●value●>●"z"●or●LST●value)●–●set●back●

<1E>

4.● Select●Altitude●Star●again●and●GoTo.

5.● Make●Altitude●Adjustments.

a)● E-W●Error●=●orthogonality.●●Correct●half●with●E●or●W●

direction●button.

b)● Orthogonality●part●2.●●●Correct●remaining●E-W●error●

with●finderscope●adjustment●screws.

c)● N-S●error●=●altitude.●●●Correct●half●with●altitude●

adjuster.

d)● Altitude●part●2.●●●Correct●remaining●half●of●N-S●error●

with●N●or●S●direction●button.

e)● Recalibrate

f)● Return●Meridian●Delay●to●normal●<0W>.

g)● Select●Altitude●Star●again●and●GoTo.

6.● Make●Azimuth●Adjustments

a)● Choose●second●star●at●least●40●deg.●from●altitude●star●

that●is●away●from●the●pole.

b)● Use●GoTo●to●slew●to●second●star.

c)● Correct●ENTIRE●error●with●Azimuth●Adjuster.

d)● Skip●Re-calibrate.

e)● Select●and●slew●back●to●Altitude●Star.

f)● Center,●if●needed●with●direction●buttons●and●Re-cali-

brate.

g)● Repeat●process●until●adequately●aligned.