The Online Digitized Sky Surveys (DSS1 & 2) server at the ESO/ST-ECF Archive provides access to the CD-ROM set produced by the Space Telescope Science Institute through its Guide Star Survey group. The images of these surveys are based on photographic data obtained using the Oschin Schmidt Telescope on Palomar Mountain and the UK Schmidt Telescope. The plates were processed into the present compressed digital form with the permission of these institutions. The photographic plates were scanned to a pixel scale of about 1.7 arcseconds per pixel for the POSS, SERC, and Palomar Quick-V surveys, and to about 1.0 arcseconds per pixel for the POSS-II surveys. Images of any part of the sky may be extracted from the DSS, in either FITS or GIF format.
All data for the Herschel SPIRE and PACS guaranted time program on Interstellar Medium (SAG-4) and other public data processed at IDOC. All data have been reprocessed at IDOC using advanded reprocessing pipeline.
All data for the Herschel SPIRE and PACS guaranted time program on Interstellar Medium (SAG-4) and other public data processed at IDOC. All data have been reprocessed at IDOC using advanded reprocessing pipeline.
NED service to query for Objects by Reference Code:
The NASA/IPAC Extragalactic Database (NED) provides a comprehensive fusion
of multi-wavelength data for hundreds of millions of objects located beyond
the Milky Way galaxy.
This service searches NED's master list of extragalactic objects by (19 digit)
journal reference code. It returns object names, positions, and
redshifts if available. It also returns counts of bibliographic references, notes,
photometry, positions, redshifts, diameters, and positional associations.
NED service to retrieve Cross-IDs for a named object.
It retrieves the names of sources which have been cross-identified
with the named object. NED is built around a master list of extragalactic objects,
for which multi-wavelength cross-identifications have been established. Cross-identifications
are based on a statistical, rule-based cross-matching algorithm that matches names,
positions, redshifts, and other relevant data to objects already in NED. These matches
are also vetted by human experts on the NED staff.
NED service to retrieve diameters, axis ratios, and position angles for a named object.
Diameters and related data, measured across the electromagnetic spectrum, have
been collected from large surveys, compilations and the literature. These include
optical diameters from SDSS, GALEX, RC3, ESO-B, ESO-LV, UGC, MCG, and many others.
NED service to retrieve Photometry for a named object.
This service retrieves photometric data for a named object.
The data include continuum measurements spanning the entire
observed spectrum (radio through gamma rays).
Measurements are provided in their published units, and they are also
converted to common units to construct spectral energy distributions.