On Sunday, September 25, 2022 at 06:51:13 PM CDT, Svend, OZ7UV <spanget@...> wrote:





Hi Mike.

I just got this answer:

PstRotator v17.28.
The displayed Moon distance is now the distance between your location and
the Moon surface.
It is still a difference around 100km between PstRotator and WSJT-X, and I
will try to find the reason.

Codrut - YO3DMU
\Svend, OZ7UV

man. 26. sep. 2022 01.02 skrev Michael Black via groups.io <mdblack98=
yahoo.com@groups.io>:

Trying to determine accuracy of moon distance.

Using WSJTX Astronomy window, PSTRotator and https://www.mooncalc.org

All 3 seem to agree pretty well on Az and El but distance is off by about
5000km comparing WSJTX to the others.


As of 13:00 or so I see
WSJTX 383,115
PSTRotator 388074
MoonCalc  388199

The equatorial radius of the moon is 1,738km so that doesn't explain the
difference (of about 1.3%).

It seems the code in wsjtx was done with certain deliberation so I'm
hoping WSJTX is more accurate.  But how to resolve who's right?

Mike W9MDB