0 votes

Dear Datalab colleagues, 

I was to download the image cutout. But I had the sia server url error like below:

DALServiceError: 502 Server Error: Proxy Error for url: https://datalab.noao.edu/sia/coadd_ls_dr7?POS=190.6095%2C67.7055&SIZE=0.3453117461576652%2C0.131&FORMAT=ALL&INTERSECT=OVERLAPS&VERB=2

I have one question: is the coadd server working? If yes, is there any coadd images for ls_dr9? 



by | 445 views

1 Answer

+1 vote
Thanks for your message, the SIA service had to be restarted, but in this case the problem is that the service URL is simply "/sia/ls_dr7" since all images are coadded.  As for your second question, the LS DR9 service was added just yesterday with the service URL https://datalab.noao.edu/sia/ls_dr9
by datalab (20.7k points)
It is still processing, I expect it to finish today at the current rate.
The scraping finally finished and the tables have been reloaded in the database.  There are now 'image' prodtypes at your position.  Please let us know if you find any other problems.
Thank you very much. I tried it and it works now. One more little question: how do I select the "mask" image for each observation image? I tried to set prodtype= mask, but it did not work.

Thanks again and have a great long weekend.
The mask image isn't identified automatically by the prodtype/proctype keywords (these are pulled from the headers), however you can do a search on the 'accessURL' field for the substring 'maskbits.fits.fz' to find the image.  Note this trick is peculiar to the Legacy Survey images.
Not sure what happened, the SIA server seems down again. See the error below:

DALServiceError: 502 Server Error: Proxy Error for url: https://datalab.noao.edu/sia/ls_dr9?POS=196.6095%2C67.7055&SIZE=1.3179837639605543%2C0.5&FORMAT=ALL&INTERSECT=OVERLAPS&VERB=2

409 questions

426 answers


630 users

Welcome to Data Lab Help Desk, where you can ask questions and receive answers from other members of the community.