Hi Patrick,

> Firstly, when I first start Guide, the screen is white...

That sounds as if you've switched to 'chart mode'. If you go into
Display... Background, you'll see that the first two options are
"normal colors" (with a black background) and "chart mode" (with a
white background). Next to each radio button should be a little
rectangle showing the background color; you can click on those
rectangles to choose a new background color.

I'd see two possibilities. Most likely, you'll see that the
rectangles are indeed black and white, and that the "chart mode"
radio box is checked. Switch to "normal colors", and you'll get
things the way you want them.

The other possibility would be that the top rectangle is white.
Click on that and select a black background, and things should be
perfectly okay.

If that doesn't do it, I have to start wondering if it's a
Windows 7 issue. It's not one of which I've heard, though, so
I'm reasonably confident the above suggestions will fix the problem.

> The second puzzle is new to the latest version. In Perseus, a
> huge circle of stars is visible at all zoom levels. The circle
> includes alpha and delta Per and is about 6 degrees in diameter.

This one is a bit more of a puzzler. It sounds as if some odd
dataset has been turned on. I'd recommend that you right-click on
one of the "problem stars", and then on More Info. It could be
that this is the result of a download of A2.0 data.

Our friends at VizieR have occasionally altered the formats of
these downloads. If you grabbed some data a while back, it might
have appeared Just Fine using the files provided with Guide at the
time. Then the format changed, and Guide's files describing the
format changed to match.

Anyway... "More Info" will probably contain a line such as
"click here to delete downloaded data". Click on that, and the
problem stars ought to vanish. (You can then download more A2.0
stars if you wish, and they ought to appear correctly.)

-- Bill

Beside each star is its magnitude. Around delta Per is a group of five stars of magnitude 0.1 (!). Right clicking on stars within this circle is also a bit odd. the data for alpha Per is given as -

>
> mag 1.9
> B mag 0.0
> USNO A2.0 star
> alt 24.9 az 40.3
> circumpolar
> Tran 4:50 GMT (UT)
>
> If I zoom right in, I can see two stars displayed here, the one hidden at the back having the data I expect -
>
> MIRPHAK
> mag 1.81 spec F5
> NSV 01125
> alp Per (fl. 33)
> etc.
>
> Anybody else seen this?
>
> Thanks,
>
> Patrick
>
>
>
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