ICQ Magnitude Method Keys (47)

Key
Name
-
Unknown
a
Orange filter used on SOHO spacecraft with C2 and C3 coronagraphs
A
Pogson
b
VBM method using RCA #4549 image intensifier
B
Simple Out-Out method
c
Unfiltered nuclear CCD magnitude
C
Unfiltered total CCD magnitude
d
Astrodon G filter
D
Johnson/Bessel/Kron/Cousins B with CCD
e
Extrafocal-Extinction (or Beyer) method using RCA #4549 image intensifier
E
Extrafocal-Extinction method
f
"Nuclear" magnitude obtained using Meade CCD interference filter CM-500 Visible
F
Total magnitude obtained using Meade CCD interference filter CM-500 Visible
g
CCD magnitude with Gunn g filter
G
CCD magnitude with a Corion NR-400 "minus-infrared" filter
H
Kron/Cousins I with CCD
i
Visual observation using an image intensifier
I
In-focus
j
Kron-Cousins V filter employed (m2 estimate)
J
Kron-Cousins V filter employed
k
Kron/Cousins R with CCD
K
Clear filter used on SOHO spacecraft with C3 coronagraph
l
CCD magnitude with a Wratten 25 filter
L
Photoelectric B
M
Modified-Out method
N
Called magnitude of nucleus or condensation
o
Visual extrafocal comparison using RCA #4549 image intensifier
O
Out-of-focus (or extrafocal) method
p
Photographic with Kodak 2415 film
P
photographic
q
R-band magnitude for nuclear condensation
Q
"out-out"; supposed to be same as VBB method
r
CCD magnitude with Gunn r filter
R
Photoelectric R
s
VSS method using image intensifier
S
In-Out method
t
Total visual magnitude (no other information provided; historical obs. only)
T
Magnitude estimated from a TV monitor
u
CCD-derived V nuclear magnitudes (m2)
U
Johnson/Bessel/Kron/Cousins U with CCD
v
Photoelectric with filters to match visual
V
Johnson/Bessel/Kron/Cousins V with CCD
w
1P21 photometer + Kodak W64 filter
W
Photoelectric (no band given)
X
Ortochromatic film + yellow filter, which is a system very close to the V band
Y
Wratten No. 15 with CCD
Z
CCD Visual equivalent