SIMBAD query result

Please have a look at the "Dictionary of Nomenclature"

Result of query: info cati RCS 04221101660

.

 [Class]      Acronym  (Explanation)   . . . . . . . . . in Simbad, use:
 [ClG]        RCS (Red-sequence Cluster Survey)  . . =E= RCS JHHMM+DDMM
                                                      or RCS JHHMM.m+DDMM
                                                      or RCS JHHMMSS+DDMM.m
                                                      or RCS NNNNNNNNNNN
 [ClG]        RCS1 (Red-sequence Cluster Survey) . . =E= RCS JHHMM+DDMM
                                                      or RCS JHHMM.m+DDMM
                                                      or RCS JHHMMSS+DDMM.m
                                                      or RCS NNNNNNNNNNN
=E= indicates catalogues available in electronic form at CDS