ADC Data on CD-ROMs & Other Media
The ADC's astronomical catalogs and journal data tables are not only available via the Internet. Many of the most popular catalogs are available on the ADC's CD-ROMs. This can be a very convenient and cost-effective way to request ADC data, particularly for the larger catalogs. In addition, users may ask for selected data sets to be sent to them on one of several other computer media (e.g., CD-Recordable, 8mm tape, diskette).
ADC catalogs can be obtained off-line on CD-Recordable, magnetic tape and floppy diskette for a fee . Ordering information may be obtained from the NSSDC Coordinated Request and User Support Office.
Requests for ADC CD-ROMs may be placed by contacting theNSSDC Coordinated
Request and User Support Office or
by CD-ROM order form. 
Please Note: Certain catalogs have been updated since they were published on our CD-ROMs. Also, some errors may have been uncovered since the discs were produced. This information is compiled and is available via FTP from adc.astro.umd.edu in the /pub/adc/errors/ directory. Requesters are advised to check this information to ensure that they are using the best available data.
The fourth volume of Selected Astronomical Catalogs contains a mix of
catalogs which have been updated since Volumes 1, 2 and 3 and popular data
sets not published on the first three volumes. We are providing only the ASCII
versions of the data sets of this CD-ROM, software is included to allow users
to create FITS table versions if they need them. All of the original catalogs
contained on
ADC CD-ROM, Volume 4 are available on our FTP server or can be requested
on CD-ROM for a fee . The CD-ROM contents list
provides links to the current version of each catalog.
[IMPORTANT: CD-ROM Volume 4 discs may not be readable on
some computers. See the Q & A on the
Selected Astronomical Catalogs, Volume 4 CD-ROM for more details.]
The third volume of Selected Astronomical Catalogs includes Volume 1 and 2 catalogs which have been updated or corrected and popular catalogs not published on either of the first two volumes. All of the original catalogs contained on ADC CD-ROM, Volume 3 are available on our FTP server or can be requested on CD-ROM for a fee . There are two versions of this CD-ROM, one in ASCII (Volume 3, No. 1) and one in FITS (Volume 3, No. 2).The CD-ROM contents list provides links to the current version of each catalog and all reported errors are contained in the errata list .
The second volume of Selected Astronomical Catalogs includes some of the largest catalogs in the ADC's collection. All of the original catalogs contained on ADC CD-ROM, Volume 2 are available on our FTP server or can be requested on CD-ROM for a fee . There are two versions of this fee . There are two versions of this CD-ROM, one in ASCII (Volume 2, No. 1) and one in FITS (Volume 2, No. 2). The CD-ROM contents list provides links to the current version of each catalog and all reported errors are contained in the errata list .
The first CD-ROM offering of the ADC, the two-disc set containing 114 astronomical catalogs in now out of print. One disc contains flat ASCII text file versions of the catalogs, while the other contains most of the same catalogs in FITS table format. All of the original catalogs contained on ADC CD-ROM, Volume 1 are available on our FTP server or can be requested on CD-Recordable for a fee . The CD-ROM contents list provides links to the current version of each catalog and all reported errors are contained in the errata list . Since production, many of the catalogs have been updated or corrected and prepared to Volumes 2, 3 and 4.
Notice: Use of these data in publications of any kind should be acknowledged by reference to the original authors and publication and to the ADC CD-ROM.