Hi Arild,

I'll take a guess that the issue has to do with the projection
specified in Settings... Projection. What do you have there?

For a long time, the only map projections provided in Guide
were the stereographic, orthographic, equiarea azimuthal, and
equidistant azimuthal. The default was (and still is) the
stereographic projection; this makes lots of sense for star
charts. It preserves shapes, even over wide areas. However,
toward the edge of a big chart, scale increases.

For charts of the earth (such as those shown for eclipses,
occultations, etc.), some of the other projections start to look
useful for one reason or another. It could be that you set (say)
a Mercator projection for an eclipse chart, which then led to
odd results when you returned to sky charts.

I would expect any of the azimuthal projections to work without
weird artifacts of the sort you describe. I also _think_ the other
projections work Just Fine. They ought to; there is some special
code to handle the different sorts of mathematical singularities
peculiar to each projection. But it could be that I didn't get one
exactly right for all situations; there are currently seventeen
map projections in Guide. But if one is broken, I'd like to know
about it.

It might be a good idea to e-mail me your 'startup.mar' file.
I am reasonably sure that knowing the map projection you're using
will enable me to fix the problem, but couldn't swear to it; just
in case, I'd like to be able to replicate the situation exactly.

-- Bill