taskGNU Astronomy Utilities - Tasks: task #15780, Query imaging databases

 
 

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task #15780: Query imaging databases

Submitted by:  Mohammad Akhlaghi <makhlaghi>
Submitted on:  Sun 27 Sep 2020 10:32:06 PM UTC  
 
Should Start On:  Sat 26 Sep 2020 11:00:00 PM UTC Should be Finished on:  Sat 26 Sep 2020 11:00:00 PM UTC
Category:  Query Priority:  5 - Normal
Item Group:  Enhancement Status:  None
Privacy:  Public Percent Complete:  0%
Assigned to:  None Open/Closed:  Open
Effort:  0.00

Sat 03 Apr 2021 12:21:44 AM UTC, comment #1: 

Javier Moldon also proposed NASA's SkyView at https://skyview.gsfc.nasa.gov/current/cgi/query.pl

Mohammad Akhlaghi <makhlaghi>
Project Administrator
Sun 27 Sep 2020 10:32:06 PM UTC, original submission:  

The SDSS imaging database can be queried for the images covering a certain area at https://dr12.sdss.org/mosaics .

Once you fill the form, the full list of images that cover the desired area is available in a shell script that can be downloaded from a URL like this:

https://dr12.sdss.org/mosaics/script?onlyprimary=True&pixelscale=0.396&ra=202.469583333&filters=gri&dec=47.1952777778&size=0.2

In this link, I have asked for a region that is centered on M51 (202.469583333, 47.1952777778), within a square box of size 0.2x0.2 degrees, asking for the native pixel scale (0.396 arcsec/pixel), for the 'g', 'r' and 'i' band images.

From the given shell script, we can extract the URLs and use cURL to download the images. Ideally, we can also uncompress them (either by directly calling 'bz2', or using its library).

Mohammad Akhlaghi <makhlaghi>
Project Administrator

 

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    Date Changed by Updated Field Previous Value => Replaced by
    2021-04-03 makhlaghi SummaryQuery from SDSS imaging database => Query imaging databases

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