2MASS Numbers

Basic Numbers for 1.3M 2MASS Telescope

1.3m f/13.5

Scale:
IR: 0.13"/pix (1024x1024) 2.2' field
Optical: (binned 2x2) 0.369"/pix 5.8' field, N up, E left

estimated mag at 1 ADU/s for 1.3m with andicam using YALO
efficiencies. Note that there are 3.5e-/ADU

mag for 1ADU/s
U 19.2
B 22.0
V 21.8
R 21.3
I 20.7

Optical detector 2.3e-/ADU, 6.5e- ron
linear to 45000ADU, saturates at 65K
Read tiem 47s
30mu pix, (2x2 binning)

IR array
18mu pix
N right, E up
7.0e-/ADU, 13.5e- ron
linear to 5000ADU

rough Hubble law for Type Ia SNe:
U_max=5log(cz) - 3.9
B_max=5log(cz) - 3.3
V_max=5log(cz) - 3.2
R_max=5log(cz) - 3.2
I_max=5log(cz) - 2.9