2200+420 (BL Lac)
Coordinates
R.A. = 22:02:43.290, Dec. = +42:16:39.98 (2000)
z = 0.0686
Landessternwarte Heidelberg-Königstuhl
MAPCAT suggested stars: B C
H
Important note:
For photometry ONLY, please use MIDAS aperture parametes: 8",2", and 6" (or 15pix, 4pix, and 11pix when the SITe CCD is used [0.53"/pix]).
Comparison stars
|
Star
|
U |
B |
V |
R
|
I |
|
B
|
16.47 (~ 0.07) |
14.68 (~ 0.04) |
12.90 (0.04) |
11.99 (0.04) |
11.12 (0.05) |
|
C |
15.66 (~ 0.06) |
15.20 (~ 0.05) |
14.26 (0.06) |
13.79 (0.05) |
13.32 (0.05) |
|
H |
16.91 (~ 0.09) |
15.81 (~ 0.06) |
14.40 (0.06) |
13.73
(0.06) |
13.07 (0.06) |
|
K |
16.61 (~ 0.08) |
16.36 (~ 0.07) |
15.47 (0.07) |
15.00 (0.07) |
14.54 (0.07) |
UB from Bertaud et al. (1969, A&A 3, 436)
VRI from Fiorucci
& Tosti (1996, A&AS 116, 403)
Field of view is 10'x10'