Chart coordinates settings

[TakKanekoGit]

Chart coordinate settings

Options to specify how the charts will be displayed on the PiFinder. To change the settings, go to Settings\Chart... and select Coordinate Sys.. The options are:

• Horizontal: Horizontal (alt/az) coordinates
• EQ (Auto): Equatorial coordinates. Sets the orientation automatically: North-up if the user is in the northern hemisphere or south-up in the southern hemisphere.
• EQ North-up: Equatorial coordinates, north-up.
• EQ South-up: Equatorial coordinates, south-up.

Other new features

• Chart will display without GPS lock (it will default to displaying the chart NCP-up)
• Can start alignment without GPS lock (it will default to displaying the chart NCP-up)

Notes

• Previously, the field "Roll" was used to rotate the chart. Roll no longer needs to be provided to chart.py -- just RA and Dec. "Roll" has been renamed to chart_rot_angle to be more explicit.
• Side effect: In the horizontal coordinates, which shows the chart zenith-up, the chart can rotate quite a lot near the zenith.

Sky-tested 20260509 (bce9590).
Sky-tested 20260509 (0206f1c).
Sky-tested 20260508 (25d4f6e).