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IDProjectCategoryView StatusLast Update
0002178SkyChart1-Softwarepublic19-08-31 16:37
ReporterhanAssigned ToPatrick Chevalley 
PrioritynormalSeverityfeatureReproducibilityhave not tried
Status resolvedResolutionfixed 
Product Version4.1 SVN 
Target Version4.2Fixed in Version4.1 SVN 
Summary0002178: Mosaic building close to celestial poles.
DescriptionThe unreleased version of mosaic design can be improved. The tiles near the celestial poles are too close to each other, not compensating for the fact that the RA lines near the poles are closer to each other. The angular distance between the tiles should be equal (delta RA/cos(DEC) )
TagsNo tags attached.

Activities

han

19-08-31 10:30

reporter  

ccdciel2.png (103,248 bytes)
ccdciel2.png (103,248 bytes)

Patrick Chevalley

19-08-31 11:35

administrator   ~0005896

Yes, I compensate for cos(DEC) using DEC for the central frame. This is insufficient near the pole, I will change to use cos(DEC) for each band.

Patrick Chevalley

19-08-31 15:39

administrator   ~0005897

This is fixed by:
https://github.com/pchev/skychart/commit/a37fdb8730dc0ecc5d180194cbe889975d5ed7fd

Patrick Chevalley

19-08-31 16:37

administrator   ~0005898

I make another change to use the specified overlap as the minimal overlap, not on the frame center.
This way you not have to increase the overlap value near the pole.

https://github.com/pchev/skychart/commit/7761bd01aeee8c3fdd7ec71bd4bebd6fba7f3032

Issue History

Date Modified Username Field Change
19-08-31 10:30 han New Issue
19-08-31 10:30 han File Added: ccdciel2.png
19-08-31 11:35 Patrick Chevalley Assigned To => Patrick Chevalley
19-08-31 11:35 Patrick Chevalley Status new => assigned
19-08-31 11:35 Patrick Chevalley Target Version => 4.2
19-08-31 11:35 Patrick Chevalley Note Added: 0005896
19-08-31 15:39 Patrick Chevalley Status assigned => resolved
19-08-31 15:39 Patrick Chevalley Resolution open => fixed
19-08-31 15:39 Patrick Chevalley Fixed in Version => 4.1 SVN
19-08-31 15:39 Patrick Chevalley Note Added: 0005897
19-08-31 16:37 Patrick Chevalley Note Added: 0005898