Project: datamanagement
Issue DM-3847: Grid overly bug
when using the grid overlay in galatic coordinate over an image that is around longitude = 0, the overlay doesn't work properly. In BOLOCAM, on fits image works but not the other one. Reproducible:	Steps to Reproduce:	Go to Atlas search, and select BOLOCAM galactic plane survey (GPS). Then enter single coordinate search on "0 0 gal" to find images taken around that. See column "FITS filename" and search for the sharc-ii instrument images such as images/sharc2/L000.15+0.00.fits [bad] and images/sharc2/L000.00+0.00.fits [good] Then open it on irsaviewer by clicking on the icon link (first column). On the image viewer, enable the grid overlay and click on the icon 'layer' on the toolbar. Change the coordinate system to galactic to see the problem. On the overlay for the associated Bolocam map there are three horizontal lines which exist only on the left hand side of the image. When the image coordinate system is set to "Gal", the reported GLON values range from -355.4 to -1.6 (from left to right), passing through -0.0 in the center. Same problem can be seen for images/v1/INNER_GALAXY/map/v1.0.2_super_gc_13pca_map50_crop.fits [bad]
Story points: 4