EqMod Custom Parking

[A320Flyer]

I have a RoR where I use a custom park position to park my scope horizontally. Using EqMod, I have this park position set to Alt 0deg/Az 0deg and it always parks on the same west side of the pier (fortunately, the side I want it to), pointing north. My question: why does it never park (thankful) on the other (east) side of the pier when that is the same Alt/Az? Is there a situation when that might happen? Mount is a SW EQ6R. Thanks

[Stuart1971]

Zero degrees on the other side is below your horizon, so it won’t do that…

[A320Flyer]

1 minute ago, Stuart1971 said:

Zero degrees on the other side is below your horizon, so it won’t do that…

Can you please explain why 0deg on east side of pier is below horizon but 0deg on west side of pier isn't . Thanks

[Stuart1971]

Because the earth is tilted on its axis, north or 90 degrees is not straight up see this image and look at the equator line at zero degrees…

 

Edited September 2, 2023 by Stuart1971

[A320Flyer]

Every day is a school day! 👍

[AstroKeith]

16 minutes ago, Stuart1971 said:

Zero degrees on the other side is below your horizon, so it won’t do that…

The OP is using AltAz coordinates.

So zero degree altitude is, by definition, the same all the way around. But doesn't answer the question.

[A320Flyer]

This was my thinking. But there must be an EqMod logic that prevents parking on the east side. I dunno?

Edited September 2, 2023 by A320Flyer

[Stuart1971]

11 minutes ago, AstroKeith said:

The OP is using AltAz coordinates.

So zero degree altitude is, by definition, the same all the way around. But doesn't answer the question.

Ah, ok I thought as he was using an EQ mount so wrongly assumed…👍🏻

Edited September 2, 2023 by Stuart1971

[Stuart1971]

Then it probably depends on the “side of pier” setting in EQMOD

 

Edited September 2, 2023 by Stuart1971

[A320Flyer]

In EqMod, my SideOfPier is currently set to Pointing(ASCOM).