Original Digitized Sky Survey
Short name[s] used to specify survey:
DSSOld,Digitized Sky Survey,DSS
This survey comprises the compressed digitization of the Southern Sky
Survey and the Palomar Sky Survey E plates as distributed on CD ROM
by the Space Telescope Science Institute. Coverage of the entire
sky is included.
This survey consists of the digititized Southern Sky Survey conducted
at the UK Southern Schmidt Survey Group by the Royal Observatory, Edinburgh
(prior to 1988) and the Anglo-Australian Observatory (since 1988)
Additional plates covering regions with bright objects are also
The plates were digitized at the Space Telescope Science Institute
and compressed using algorithms developed by R.White. These
data are distributed on a set of 101 CD-ROMs.
The following data are included:
- Southern hemisphere
SERC Southern Sky Survey and the SERC J Equatorial extension.
These are typically deep, 3600s, IIIa-J exposures with a GG395 filter.
Also included are 94 short (1200s) V exposures typically at Galactic
latitudes below 15°. Special exposures are included in
the regions of the Magellenic clouds.
- Northern hemisphere
- The northern hemisphere is covered by 644 plates from the POSS E
survey. A special exposure of the M31 region that is distributed on
the CD ROMs is not used in SkyView .
|Provenance|| Data taken by ROE and AAO, CalTech, Compression
and distribution by Space Telescope Science Institute.
STScI, ROE, AAO, UK-PPARC, CalTech, National Geographic Society.
Full copyright notice
|Frequency|| 560 THz (Different plates have different bands: J or E with a few exceptions)
|Bandpass|| 422-965 THz (individual plates have smaller bandpass)
|Units|| Scaled densities
|Resolution|| Depends on plate. Typically 2"
|Projection|| Schmidt (distorted Tangent plane projection)
|Epoch|| 1945-1958 north, 1980-1999 south
Lasker, et al., 1990, A.J. 99
Characteristics of the DSS surveys are summarized in