Zero Position - iOptron HAE69C Instruction Manual

To adjust minutes, move the cursor to each digit and use the number keys to input the number
directly. Use ▲ or ▼ key to toggle between "+" and "-". When the time information entered is correct, press
ENTER and go back to the previous screen. Note that fractional time zones can be entered.
Do not manually add or subtract an hour from displayed time to reflect Daylight Saving Time (DST).
Instead please select "Y" for DST when daylight saving time begins.
For other parts of the world you can find your "time zone" information from internet.
Set Observation Site Coordinate
The fifth and sixth lines display the longitude and latitude coordinates, respectively. The longitude
and latitude coordinates will be automatically updated when the GPS picks up satellite signals. "W/E"
means western/eastern hemisphere; "N/S" means northern/southern hemisphere; "d" means degree; "m"
means minute; and "s" means second.
Press ◄ or ► key to move the cursor and using ▲ or ▼ key to toggle between "W" and "E", "N" and
"S", using number key to change the numbers. It is always a good idea to do your home work to get the
GPS coordinates before traveling to a new observation site.
The site coordinates information can be found from your smart phone, GPS receiver or via the
internet. Site information in decimal format can be converted into d:m:s format by multiplying the decimal
numbers by 60. For example, N47.53 can be changed to N47º31'48": 47.53º = 47º +0.53º,
0.53º=0.53x60'=31.8', 0.8'=0.8x60"=48". Therefore, 47.53º=47º31'48" or 47d31m48s.
Select N/S Hemisphere
The northern/southern hemisphere will be determined by your latitude coordinate, with one
exception. If you are near the equator (within +/- 10°), you can choose your own N/S setting.
If the polar axis is aligned to the North Celestial Pole, then set the mount to Northern Hemisphere. If
the polar axis is pointing to the South Celestial Pole, set the mount to Southern Hemisphere. Press the ◄ or
► key to move the cursor and use the ▲ or ▼ key to toggle between "Northern Hemisphere" and "Southern
Hemisphere".
The site information is stored inside the memory chip of the handset and the main board. If you are
not traveling to another observation site, they do not need to be changed.

4.5. Zero Position

The Zero Position is the mount GOTO reference. Without set the mount zero position properly, it
may cause large GOTO error or even cause the scope to hit the tripod leg. The simplest way to find the
mount Zero Position of the EQ mode is using the zero position sensors. Press MENU=>Zero Position
=>Search Zero Position, then press ENTER.
The Zero Position of an EQ mount is defined as the telescope being on top of the mount head and
pointing to the North Pole (in northern hemisphere), with CW shaft mounting hole pointing to the ground. If
one would like to register the Zero Position manually, power on the mount and use handset to slew the
mount to Zero Position. Press MENU=>Zero Position =>Set Zero Position. Press ENTER to confirm.
The Zero Position for the alt-azimuth mode is defined as Level-South-Zenith. Make sure that the
mount is leveled, telescope points to Zenith and the dovetail saddle is facing WEST. And the HC is set at
AA mode.
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