Use computed field of view for constellations

[tammojan]

This should improve the drawing of constellations of wide-field trackstacks. Previously, a field of view of 90 degrees was hardcoded to prevent wrapping around the sphere. I hope @g7gpr can test this.

[g7gpr]

Testing now.

[g7gpr]

https://github.com/tammojan/RMS/blob/30406813e7c4b277cbf1eb584b51f06b9ffe0591/Utils/DrawConstellations.py#L32

Why on this line are you only converting from_ra into an array, and not from_dec?

[tammojan]

https://github.com/tammojan/RMS/blob/30406813e7c4b277cbf1eb584b51f06b9ffe0591/Utils/DrawConstellations.py#L32

Why on this line are you only converting from_ra into an array, and not from_dec?

For no particular reason, apparently it worked also without the conversion :) I've added a commit to convert both into numpy arrays (they were both lists).

[g7gpr]

looking better - Orion has appeared! But something strange is happening to Phoenix? Not sure.

[g7gpr]

Still something odd going on - Lupus stops at Beta Lupus. However I think I know what is happening. In TrackStack, ang_sep is from the centre of the image, in DrawConstellations, it is the width of the image - analogous to radius / diameter. Running again but with the ang_sep multipled by 1.95.

[g7gpr]

Or rather, the middle platepar by time, might not be in the centre of the final projection.

[g7gpr]

https://1drv.ms/u/s!AlG3aYd4Ra-vjPcBg2QWX7VE1WUfRQ

[g7gpr]

Setting the angle to 175 degrees works pretty well.

[g7gpr]

Looking very good now. Thanks for all the work on this tool.

[g7gpr]