TARGET:          774
SESSION NUMBER:  173
DATE/TIME:       2006 Apr 18 @ 09:00
FILTER:          C
TELESCOPE:       0.36m SCT
FOCAL LENGTH:    56.00
CAMERA:          SBIG ST-8E
TEMP (C):        -15
EXPOSURE (s):    180
APPROX. RA:      09:51
APPROX. DEC:     + 5
EXPOSURE JD:     Mid-exposure
JD CORR METHOD:  Light-time
JD CORRECTION:   JD = JD(raw) - 0.01486d
UNITY CORR:      -5 * log(SunDist * EarthDist): -4.5749
MAG. METHOD:     M/IR Derived
 
NOTE:            For multiple sessions, differential magnitudes include
                 adjustments ADDED to the Obj-CAvg value to compensate
                 for changing phase angle, distance, and refinements to
                 the base average value of the comparison stars.
BASE COMP VALUE: +0.000
BASE CORRECTION: +0.000
PHASE/DIST CORR: +0.000
 
ERROR CALC:      The magnitude error is calculated by the following:
                 Err = sqrt(sqr(ERR[target]) + sqr(Err[Comps]))
                       where Err[Target] = 1.0857/SNR[target]
                             Err[Comps]  = sqrt(sqr(1.0857/SNR[Comp1])... + sqr(1.0857/SNR[CompN])) / N
                 The factor of 1.0857 converts flux to magnitudes (Howell)
 
*********************************************************************************************
 
-------------------------------------------
  J.D.          Obj-CAvg    Err    Session
-------------------------------------------
2453843.83818     +1.205   0.009       173
2453843.84197     +1.237   0.006       173
2453843.84531     +1.231   0.005       173
2453843.84945     +1.243   0.005       173
2453843.85520     +1.252   0.005       173
2453843.86354     +1.263   0.005       173
2453843.86618     +1.261   0.005       173
2453843.86884     +1.266   0.005       173
2453843.87289     +1.262   0.005       173
2453843.87551     +1.263   0.005       173
2453843.87809     +1.271   0.005       173
2453843.88275     +1.255   0.005       173
2453843.88543     +1.261   0.005       173
2453843.89947     +1.241   0.008       173
2453843.90216     +1.232   0.011       173
2453843.90522     +1.211   0.022       173
2453843.91664     +1.221   0.006       173
2453843.91932     +1.211   0.017       173
2453843.92205     +1.215   0.005       173