Para todos los usarios de 1.5m telescope de Johnson-Cousins filtros.


30 Marzo 2003

Landolt estandartes: RU 149     PG1633+099

m_inst (ubvri) = -2.5*log(Counts)-a_i*AM+2.5*log(T_exp)

m_inst (ubvri)  - magnitudes instrumental
UBVRI - magnitudes de sistema Jonhson-Cousins
Counts  - cuentas totales de estrella
AM       - MASSA de AIRE
T_exp   -  tiempo de exposicion.

a_i:  a_u = 0.46;  a_b=0.24; a_v=0.14; a_r=0.08; a_i=0.05  

CCD SITE1k, Ganancia:  1.

U - u  = 20.295(51) + 0.101(37) * (u - b)
B - b  = 21.641(19) + 0.078(22) * (b - v)
V - v = 22.137(10) - 0.002(8)  * (b - v)
R - r = 22.340(11) - 0.028(2)  * (v - r)
I - i = 22.078(3)  + 0.076(14) * (r - i)

U - B = -1.296(64) + 1.013(45) * (u - b)
B - V = -0.548(12) + 1.133(13) * (b - v)
V - R = -0.178(6)  + 0.986(13) * (v - r)
R - I =  0.242(2)  + 0.940(12) * (r - i)

*********************************************************************
31 Marzo 2003

Landolt estandard:  RU 149

CCD SITE1k, Ganancia: 1

U - u =20.200(36) + 0.131(23) * (u - b)
B - b = 21.573(9)  +0.131 (10) * (b - v)
V - v = 22.127(15) -0.003(16)*(b - v)
R - r = 22.232(7) - 0.016(13) * (v - r)
I - i = 22.066(7) + 0.113(31) * (r - i)

U - B = -1.342(74) + 1.039(52) * (u - b)
B - V = -0.555(24)+1.136(26)*(b - v)
V - R = -0.167(11)+0.954(23)*(v - r)
R - I = 0.246(7)+0.927(37)*(r - i)

********************************************************************
23 April 2003
RU 149
CCD SITE 1k, Ganancia  4

U - u = 21.672(26) + 0.071(17)*(u - b)
B - b = 23.017(30)+0.072(20)*(u - b)
B - b = 23.020(19)+0.110(20)*(b - v)
V - v = 23.558(15) - 0.001(17)*(b - v)
V - v = 23.558(14) - 0.002(29)*(v - r)
R - r = 23.736(12)+0.054(29)*(v - r)
R - r = 23.760(4) + 0.058(25)*(r - i)
I - i = 23.514(6)+0.081(31)*(r - i)


U - B = -1.342(34)+0.999(23)*(u - b)
B - V = -0.533(14)+1.110(16)*(b - v)
V - R = -0.188(7)+0.980(15)*(v - r)
R - I = 0.241(3)+0.941(17)(r - i)

*********************************************************************

24 April 2003

RU 149

CCD SITE1k, Ganancia 4

U - u = 21.599(27)+0.0651(18)*(u - b)
B - b = 22.969(32)+0.084(21)*(u - b)
B - b = 22.976(11)+0.131(12)*(b - v)
V - v = 23.562(20)-0.011(20)* (b - v)
V - v = 23.559(17) - 0.19(32)* (v - r)
R - r = 23.645(54)+0.017(11)* (r - i)
R - r = 23.717(31)+0.066(17)*(r - i)
I - i = 23.496(5)+0.072(27)*(r - i)


U - B = -1.360(49)+0.982(32)*(u - b)
B - V = 0.538(36)+1.098*(b - v)
V - R =-0.135(25)+0.888(54)*(v - r)
R - I = 0.223(24)+0.991(14)*( r - i)