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<H3><A NAME="SECTION003243200000000000000">
Column label: OBSE</A>
</H3>
The values in this column are the corresponding hour angles of the
eastern ``observation'' limits, in decimal degrees.
An accuracy of about 0.1 degree is adequate.
Most telescopes read out hours and minutes instead; these should be
acceptable inputs to the table-making program, which should do the conversion.
If hours and minutes of time are read, try to read hour angles to the nearest
minute or better.
<P>
In some cases, hour angles east of the meridian are read as negative values; in
other cases, values will lie between
<!-- MATH: $180^{\circ}$ -->
<IMG
WIDTH="47" HEIGHT="22" ALIGN="BOTTOM" BORDER="0"
SRC="img1147.gif"
ALT="$180^{\circ}$">
and
<!-- MATH: $360^{\circ}$ -->
<IMG
WIDTH="48" HEIGHT="22" ALIGN="BOTTOM" BORDER="0"
SRC="img1148.gif"
ALT="$360^{\circ}$">(
<!-- MATH: $12^{\rm h}$ -->
<IMG
WIDTH="38" HEIGHT="26" ALIGN="BOTTOM" BORDER="0"
SRC="img1149.gif"
ALT="$12^{\rm h}$">
and
<!-- MATH: $24^{\rm h}$ -->
<IMG
WIDTH="39" HEIGHT="26" ALIGN="BOTTOM" BORDER="0"
SRC="img1150.gif"
ALT="$24^{\rm h}$">).
Both styles should be acceptable.
The minus sign may be omitted if the values are numerically smaller than
<!-- MATH: $180^{\circ}$ -->
<IMG
WIDTH="47" HEIGHT="22" ALIGN="BOTTOM" BORDER="0"
SRC="img1151.gif"
ALT="$180^{\circ}$">
(
<!-- MATH: $12^{\rm h}$ -->
<IMG
WIDTH="39" HEIGHT="26" ALIGN="BOTTOM" BORDER="0"
SRC="img1152.gif"
ALT="$12^{\rm h}$">).
<P>
<BR><HR>
<ADDRESS>
<I>Petra Nass</I>
<BR><I>1999-06-15</I>
</ADDRESS>
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