Telescopes and detectors used to obtain the data in [Wisniewskietal1997].
The codes are used in column 22 of the Aspect Data and Mean Magnitudes Table
(Table 1).  The portion of the code before the hyphen is the telescope code,
that after the hyphen is the detector code.

Telescope codes:

B    = Blue Mesa Observatory, NM State U., 24-inch. 
C    = Univ. of Ariz. Catalina Station 61-inch. 
CTIO = Cerro Tololo Observatory 0.9-meter. 
K    = Steward Obs. Kitt Peak 90-inch. 
L    = NASA/UA Mt. Lemmon 60-inch. 
Lo   = Lowell Obs. 42-inch. 
M    = McDonald Obs. 30-inch. 
T    = JPL Table Mountain Obs. 24-inch. 

Detector Codes:

p1  = "Old" PMT, 1P21 or S-1, plus ECAS filters. 
p2  = Varian PMT plus ECAS filters. 
p3  = RCA C31034 PMT plus ECAS filters. 
p4  = Hamamatsu GaAs(Cs) PMT plus ECAS filters. 
UBV = Pulse-counting PMT with UBV filters. 
c1  = Steward Obs TI CCD. 
c2  = CTIO RCA320x512 CCD. 
c3  = CTIO TI #1 CCD.  
c4  = Fink CCD. 
c5  = Steward Obs TI 2048x2048 CCD. 
c6  = Steward Obs  RCA CCD.
p1/p3 = p1 or p3 (defined above)