Fix Version/s: None
Sprint:SUIT Sprint 2017-4, SUIT Sprint 2017-5, SUIT Sprint 2017-6
Team:Science User Interface
I am wondering if it would be straightforward to provide a "footprint" outline of the Stripe 82 area on the sky for use in highly zoomed-out context images in PDAC.
If this is an easy task, in what format would we need to specify the coordinates of the online?
I think we can do a calculation of four corners of all the coadded images and produce a sd9 region file for the outline.
How to generate the region files attached here:
1)Get four corners data for all the coadds FOVs for SDSS:
curl -o sdssFourCorners.json -d 'query=SELECT+corner1Ra,corner1Decl,corner2Ra,corner2Decl,corner3Ra,corner3Decl,corner4Ra,corner4Decl+FROM+sdss_stripe82_00.DeepCoadd;' http://lsst-qserv-dax01.ncsa.illinois.edu:5000/db/v0/tap/sync
2)Convert the json file to csv using a tool on line:
3)Sort the csv file by corner1Ra
5)Convert the csv file to a region file by adding "polygon(" and ") #color=green" and a header "fk5"
6)For only plot 1% or 10% FOVs:
awk 'NR == 1 || NR % 100 == 0' input.reg > output_1pct.reg
awk 'NR == 1 || NR % 10 == 0' input.reg > output_10pct.reg
The region file can be loaded to Firefly.
I think this is now more interesting, as now that the WISE data are on PDAC it will be good to be able to show the overlap region graphically when people are doing spatial joins between the two Object tables.
I have attached the region file which contains 1% of the SDSS Strip 82 coadds and a png file to plot those coadds on an globe image.
Let me know anything more need to be done.
The shape of Stripe 82 coadds is not easy to draw the footprint outline. We can discuss about that.
Please put inn more information explaining how you generated the region file.
We can overlay DS9 regions.