Snapshot:
```
Starting tests using config file with N_PHOTONS = 1000000
........................................................
g1obs_draw  = -0.0898203477658
delta_g1obs = 7.74310031113e-05 +/- 2.62865401487e-05

g2obs_draw  = -0.0725088180936
delta_g2obs = 6.7287039698e-05 +/- 2.61427655312e-05

sigma_draw  = 2.55980539322
delta_sigma = -0.000755629901375 +/- 9.94894371872e-05

image size = 48
pixel scale = 0.27
wmult = None

total time taken = 151.537832022 s
total number of iterations = 56
number of trials per iteration = 32
number of photons per trial = 1000000

Starting tests using config file with N_PHOTONS = 1000000
.......................................................
g1obs_draw  = -0.0898203477658
delta_g1obs = 3.93323917605e-05 +/- 2.63026045463e-05

g2obs_draw  = -0.0725088180936
delta_g2obs = 1.81213916253e-05 +/- 2.61967607586e-05

sigma_draw  = 2.55980539322
delta_sigma = -0.000505117259242 +/- 9.92575597855e-05

image size = 48
pixel scale = 0.27
wmult = 4.0

total time taken = 678.900177002 s
total number of iterations = 55
number of trials per iteration = 32
number of photons per trial = 1000000

Starting tests using config file with N_PHOTONS = 3000000
.........
```