--- klauslms <[EMAIL PROTECTED]> wrote:
> --- In [email protected], John Mahony <[EMAIL PROTECTED]>
> wrote:
> >
> > --- klauslms <[EMAIL PROTECTED]> wrote:
> >
> > > Hello!
> > > I have one Dummy-Question: How to find a position manually by this
> data:
> >
> > I re-arranged your data to show the order it should be entered:
> >
> >
> > > date : Jul. 23, 2007 AD, 2:56:49 pm
> >
> > First, set the date/time in the program to these numbers (use the
> clock icon in
> > the lower left toolbar (not the stopwatch in the upper left toolbar)).
> >
> > > lat : 37°45' long : 122°26' W
> >
> > Click the observatory icon in the lower left toolbar to enter these
> numbers.
> >
> > > Alt : 310°52', Az : 333°28'
> >
> > Then in the top menu bar, click "search>locate new position", and
> enter the alt
> > and az.
> >
> > > field : 0.01° x 0.01°
> >
> > If you really want to zoom in that far, you can enter the "field
> width" in the
> > same place as above (or use the magnifying glass icon in the top
> toolbar).
> > Then click OK in the "locate new position" window.
> >
> > -John
> >
> > Hi John!
> Sorry, i tried all, but I have no success!
> Why I cannot enter more than the alt-data-degree in the search
> toolbar? Entered "310" more entries are not possible.
Degrees, minutes, seconds are entered in different boxes, so you have to use
the tab key to move from one to the next (or move the mouse cursor and click in
the next box).
> What about the
> other settings: Rektazension and deklination
Right ascension and declination is the sky's "natural" coordinate system. The
numbers are fixed on the sky and rotate with it. Altitude-azimuth is a "land
based" coordinate system. These numbers are fixed relative to your location on
earth. So the two coordinate systems are related to each other, but the
correspondence depends on your location, and the time (time is involved,
because RA-dec is fixed to the stars, so this rotates relative to your local
az-alt coordinate system, as the earth rotates).
So enter the numbers for only _one_ pair of number (the other pair will change
automatically when you enter the first pair). Since you know the time and
alt-az numbers for this particular observation, use the alt-az numbers, not
RA-dec. And make sure you have the time, and your location, set first (oh, and
make sure the time zone is set correctly, for the time you listed in your
original question).
> and direktion?
That just determines the orientation of the star field shown in the chart. So
if you were using a refractor or SCT without a diagonal, where everything is
rotated 180 degrees, you could enter 180 to make the chart match the
orientation you saw in the eyepiece.
> In the end: how to enter the field? I have to enter 0.01 x 0.01 (??),
> but how?
CdC wants the numbers in units of degrees, arcminutes, and arcseconds, but you
have it in decimal degrees. So you have to convert: there are 60 (arc)seconds
in an (arc)minute, and 60 (arc)minutes in a degree. So .01 degrees is .01 X 60
= .6 arcminutes, and that's .6 X 60 = 36 arcseconds. So enter the field as
0°0'36".
-John
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