The CNOC2 survey consists of 4 patches,
each laid out in the rough L shape shown above.
Each patch consists of 17-19 overlapping fields,
each field being the size of a single MOS pointing.
Spectroscopy was obtained using two masks per field
(an A mask emphasizing bright objects and a B mask emphasizing faint objects),
with two exposures per mask.
The following table summarizes the main properties of the 4 patches.
| Patch | RA1950 | DEC1950 | # of Fields | # of Redshifts | E(B-V) | b | Area | # of Masks |
| 0223+00 | 02:23:29.95 | +00:05:12.9 | 19 | 1540 | 0.036 | -54.3 | 1408.7 | 39 |
| 0920+37 | 09:20:40.97 | +37:18:03.9 | 19 | 1473 | 0.012 | +45.6 | 1366.9 | 40 |
| 1447+09 | 14:47:11.83 | +09:20:43.3 | 17 | 1356 | 0.029 | +57.2 | 1240.0 | 34 |
| 2148-05 | 21:48:42.26 | -05:47:36.4 | 19 | 1715 | 0.035 | -41.6 | 1417.9 | 39 |
Notes to Table. Coordinates are the 1950.0 centers of the a0 fields. Number of redshift values are taken from the V1.5 catalogs, which are not the final versions. b values are Galactic latitudes. Area is in square arc minutes.
Data and catalogs will be made available several ways.
Currently the full catalog is only available for the 0223 patch.
- U. Toronto CNOC2 Website
- ADC
- CADC
- CDS: ftp or http
- U. Victoria CNOC2 Web Interface: Interactive image cutouts and partial catalog data.
- Canadian Astronomical Data Center: The raw images can be obtained from the CFHT Archive.
Miscellaneous Resources
- Coordinates, Finders, Extinction Maps for the patches and the individual fields within them.
- cnocobspkg IRAF Package: observing, basic reductions, data transfer. README file.
- PPP: Picture Processing Package: object detection and photometry. Coming Soon!
- cnoc97b IRAF package: multi-slit spectroscopy reduction routines. README file.
- CNOC Pipeline: post-spectroscopic-extraction reduction & analysis. README file.
- NED (NASA/IPAC Extragalactic Database) Objects in CNOC2