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List:       kstars-devel
Subject:    [Kstars-devel]
From:       Akarsh Simha <akarshsimha () gmail ! com>
Date:       2011-07-10 0:37:00
Message-ID: 20110710003700.A59B5A60BB () git ! kde ! org
[Download RAW message or body]

Git commit 295eb75db00c267a0b4663d76c8c664f4f75dbfa by Akarsh Simha.
Committed on 10/07/2011 at 02:14.
Pushed by asimha into branch 'master'.

Clearly, we were underestimating the proper motion. This calls for a
rebuild of the USNO NOMAD 1e8 star catalog.

Also adding a comment about the separation margin.
(I hope I'm right here, because I don't recall the details and don't
see enough information regarding that in my e-mail, but that does make
sense)

CCMAIL: bowlin@mindspring.com, kstars-devel@kde.org

M  +5    -1    kstars/data/tools/nomaddatatomysql.pl     

http://commits.kde.org/kstars/295eb75db00c267a0b4663d76c8c664f4f75dbfa

diff --git a/kstars/data/tools/nomaddatatomysql.pl \
b/kstars/data/tools/nomaddatatomysql.pl index dabeb32..639c46b 100755
--- a/kstars/data/tools/nomaddatatomysql.pl
+++ b/kstars/data/tools/nomaddatatomysql.pl
@@ -145,7 +145,11 @@ while(<>) {
 
     my @trixels;
     if( $star->{Name} eq "" && $star->{GName} eq "" ) {
-        my $separation = sqrt( ($botRA - $topRA) * ($botRA - $topRA) + ($leftDec - \
$rightDec) * ($leftDec - $rightDec) ); +
+        my $separation = sqrt( hour2deg($botRA - $topRA) * hour2deg($botRA - $topRA) \
+ ($leftDec - $rightDec) * ($leftDec - $rightDec) ); +
+        # HTMesh::intersect is called (in DeepStarComponent::draw()) with a 1 degree \
"safety" margin. +	# So we tolerate upto < 1 degree of proper motion without \
duplication  if( $separation > 50.0 / 60.0 ) {
 #            $mesh->intersect_poly4( $botRA, $leftDec,
 #                                    $botRA - $epsilon, $leftDec + $epsilon,
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