Digitized First Byurakan Survey (DFBS) Spectra Query Service

The First Byurakan Survey (FBS) is the largest and the first systematic objective prism survey of the extragalactic sky. It covers 17,000 sq.deg. in the Northern sky together with a high galactic latitudes region in the Southern sky. The FBS has been carried out by B.E. Markarian, V.A. Lipovetski and J.A. Stepanian in 1965-1980 with the Byurakan Observatory 102/132/213 cm (40"/52"/84") Schmidt telescope using 1.5 deg. prism. Each FBS plate contains low-dispersion spectra of some 15,000-20,000 objects; the whole survey consists of about 20,000,000 objects.

ICRS position of target object
Size of the region of interest around POS
Wavelength (range) of interest (or symbolic bandpass names)
Midpoint of exposure (MJD)
MIME type of the file served
Angular diameter of aperture
Signal-to-noise ratio estimated for this dataset
Redshift of target object
Common name of object observed.
Object class (star, QSO,...; use Simbad object classification http://simbad.u-strasbg.fr/simbad/sim-display?data=otypes if at all possible)
Date last published.
Type of flux calibration (ABSOLUTE, CALIBRATED, RELATIVE, NORMALIZED, or UNCALIBRATED).
Spatial resolution of data
Type of wavelength calibration
A short handle naming the collection this spectrum belongs to.
Lower limit to spectral resolution power (λ/Δλ) as a single number.
Dataset identifier assigned by the publisher
Dataset identifier assigned by the creator
Shell pattern of target observed (case insensitive)
Shell pattern of target observed (case sensitive)
This is queryData for the default operation; some services support getData as well
Only return the TOP "best" records (on this service, this usually is equivalent to MAXREC, so no ranking is implied).
Return compressed results?
An identifier for a certain run. Opaque to the service
Sort by
Limit to items.
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