Relação Sinal Ruído do sistema (30s de exposição)

Filter:     none 
Tel_diam:   13 (cm) 
Overall QE: 0.7 
Pixsize:    1.86 (arcsec/pixel) 
Readnoise   15 (electrons) 
Sky mag:    17 (mag/sq.arcsec) 
Airmass:    1.2 
Ext_coeff:  0.2 
Exptime:    30 (sec) 
FWHM:       2 (arcsec) 
Aper_rad:   3 (arcsec) 

mag   0.00:  star   9634017290 sky      53960 read    1839 -> S/N  98152.75 
mag   1.00:  star   3835371364 sky      53960 read    1839 -> S/N  61929.92 
mag   2.00:  star   1526888842 sky      53960 read    1839 -> S/N  39074.71 
mag   3.00:  star    607865397 sky      53960 read    1839 -> S/N  24653.79 
mag   4.00:  star    241995573 sky      53960 read    1839 -> S/N  15554.41 
mag   5.00:  star     96340173 sky      53960 read    1839 -> S/N   9812.46 
mag   6.00:  star     38353714 sky      53960 read    1839 -> S/N   6188.54 
mag   7.00:  star     15268888 sky      53960 read    1839 -> S/N   3900.42 
mag   8.00:  star      6078654 sky      53960 read    1839 -> S/N   2454.25 
mag   9.00:  star      2419956 sky      53960 read    1839 -> S/N   1537.99 
mag  10.00:  star       963402 sky      53960 read    1839 -> S/N    954.28 
mag  11.00:  star       383537 sky      53960 read    1839 -> S/N    578.64 
mag  12.00:  star       152689 sky      53960 read    1839 -> S/N    334.40 
mag  13.00:  star        60787 sky      53960 read    1839 -> S/N    178.03

Relação Sinal Ruído do sistema (60s de exposição)

Filter:     none 
Tel_diam:   13 (cm) 
Overall QE: 0.7 
Pixsize:    1.86 (arcsec/pixel) 
Readnoise   15 (electrons) 
Sky mag:    17 (mag/sq.arcsec) 
Airmass:    1.2 
Ext_coeff:  0.2 
Exptime:    60 (sec) 
FWHM:       2 (arcsec) 
Aper_rad:   3 (arcsec) 

mag   0.00:  star  19268034579 sky     107920 read    1839 -> S/N 138808.95 
mag   1.00:  star   7670742729 sky     107920 read    1839 -> S/N  87582.15 
mag   2.00:  star   3053777684 sky     107920 read    1839 -> S/N  55260.00 
mag   3.00:  star   1215730793 sky     107920 read    1839 -> S/N  34865.76 
mag   4.00:  star    483991146 sky     107920 read    1839 -> S/N  21997.30 
mag   5.00:  star    192680346 sky     107920 read    1839 -> S/N  13876.98 
mag   6.00:  star     76707427 sky     107920 read    1839 -> S/N   8752.02 
mag   7.00:  star     30537777 sky     107920 read    1839 -> S/N   5516.20 
mag   8.00:  star     12157308 sky     107920 read    1839 -> S/N   3471.10 
mag   9.00:  star      4839911 sky     107920 read    1839 -> S/N   2175.45 
mag  10.00:  star      1926803 sky     107920 read    1839 -> S/N   1350.17 
mag  11.00:  star       767074 sky     107920 read    1839 -> S/N    819.18 
mag  12.00:  star       305378 sky     107920 read    1839 -> S/N    473.96 
mag  13.00:  star       121573 sky     107920 read    1839 -> S/N    252.77