NOAO Long Term Survey
The ChaMPlane NOAO imaging survey serves two purposes:
1) provide images for identifying the optical counterparts of Chandara sources and measure their V, R, I, H-alpha magnitudes to enable approximate spectral classification and constraints on reddening
2) identify H-alpha emission objects (by comparison of their magnitudes in H-alpha vs. R filters) as well as to measure their V, R, and I magnitudes. Deep (R ~ 24) 4-m Mosaic images are obtained to identify CVs and qLMXBs by their ubiquitous H-alpha excess as ``blue'' objects in the R vs. (H-alpha - R) diagram. We have successfully conducted the ChaMPlane survey for the first year and obtained deep images in the V, R, I and H-alpha bands for 21 Chandra fields (17 from CTIO and 4 from KPNO).
The NOAO Survey will eventually include ~100 fields (MOSAIC) near the galactic plane, or about 36 square degrees. Some 21 fields have been observed thus far (in first 1.5 year of ChaMPlane) as listed in the Early Results table.