Data Products

 

Figure 3 summarizes the data products for imaging and spectroscopy, the three database servers we use to present these products to the astronomical community, and the user interfaces we have developed to help astronomers work with the data effectively. The data products described below are:

• Image Parameters: the positions, fluxes, and shapes of all detected objects;
• Spectroscopic Parameters: the redshift, spectral classification, and detected lines of each spectrum;
• Color Images: JPEG images constructed from the g, r and i imaging data;
• Images: FITS image files of the corrected frames (§ 3.5) in five bands; a mask which records how each pixel was used in the imaging pipelines; binned images of the corrected frames after detected objects have been removed; ``atlas'' images, which include all significant pixels around each detected object; and a GIF image of each spectrum, with features identified;
• Spectra: the flux- and wavelength-calibrated, sky-subtracted spectra, with error and mask arrays;
• Other Data Products: the number of objects loaded in the databases, summaries of observing conditions for imaging fields and for spectroscopic plates, and a variety of others.

 
• Parameters, Classes, and Associations
• Imaging Data Products
• Spectroscopic Data Products
• Other data products