Goodman High Throughput Spectrograph Exposure Time Calculator
Grating
300
600b
600r+GG495
1200m1
1200m3
1200m5(GG-455)
1200m7
Slit width
0.46"
0.84"
1.03"
1.35"
1.68"
3.00"
10.0"
CCD Binning
1x1
2x2
4x4
Seeing
"
Airmass
Moon
Bright
Grey
Dark
Wavelength
Angstrons
Type of spectra
Spiral galaxy
Elliptical galaxy
HII Region
Planetary Nebulae
Quasar
Star (LTT3218)
Blackbody
Blackbody temperature
K
Magnitude
Filter
U
B
V
R
I
g
r
Max Exposure Time
sec
Total Integration Time
sec
Desired S/N ratio
per resolution element
Calculate S/N for specified Total Integration Time
Calculate Total Integration Time to reach Desired S/N
Suporte SOAR (
soar.suporte@lna.br
)