DSS Data Collection Atlas
You can get a close-up map of a region by clicking on any area in red on the above image, or by typing a coordinate below.
The Digitized Sky Survey (DSS) is a ground-based imaging survey of the entire sky in several colors. The survey, performed with Palomar and UK Schmidt telescopes, produced photographic plates that were later digitized at the Space Telescope Science Institute (STScI) to produce the Hubble Guide Stars Catalog (GSC).
Each plate produced by the Survey covers 6.5 x 6.5 degrees of the sky, and the plates have been digitized using a modified PDS microdensitometer. The digital images have a pixel size of either 25 microns (1.7 arcsec per pixel) or 15 microns (1.0 arcsec per pixel), and are 14000 x 14000 or 23040 x 23040 pixels per side. The images are stored on 12-inch optical media and are difficult to access quickly.
The DSS FAQ is available at STScI, where these data originated. Additionally, please see the Schmidt Plate Summary, Transmission Curves for Photometric Bandpass plots and DSS Photometric Calibration information. A list of tiles with known problems is available here.
DSS images are represented as overlays in red on the ISSA all-sky composite image above. Either type in a coordinate or click on any red region to get a close-up of the area; the size of the search is adjustable.
DSS cutouts can be accessed here.
The Digitized Sky Survey copyright © 1994, Association of Universities for Research in Astronomy, Inc. The Digitized Sky Surveys were produced at the Space Telescope Science Institute under U.S. Government grant NAG W-2166.
Click here for more information and instructions on using Atlas Instructions
Also available is a Program Interface to Atlas.
Target Selection Single Object
(Name or Coords)
Table Upload
(Multi Object) Instructions
Size (deg):
[maximum 12.5]
Images must cover coordinate
Coordinate Examples:
  • 289.3848 11.9674 eq
  • 19h17m32s 11d58m02s Equ J2000
  • 46.5377 -0.2518 ga
  • M 31
Default: Equatorial J2000