MMTO f/9 Spectrograph Exposure Time Calculator
1. Select Instrument
Select Spectrograph
Blue Channel
Red Channel
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2. Calculation Type
What would you like to calculate?
Integration Time
Signal-To-Noise
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3. Observation Parameters
Please Choose
Calculation Type
before continuing.
Integration Time:
seconds
Signal-to-Noise:
Grating:
Available Gratings:
Select Instrument
Order:
Central Wavelength:
Filter:
Clear
UV-36
L-38
L-42
LP-495 (Y-50)
LP-530
R-63
CM500
CuSO4
C-500
U330
0.5m Neutral Density
1.25m Neutral Density
2.5m Neutral Density
Binning:
Spatial Binning:
Dispersion Binning:
Slit Width:
Select Slit Width:
0.75"
1.00"
1.25"
1.50"
2.00"
3.50"
5.00"
AB Magnitude:
Observing Conditions:
Seeing:
arcsec
Lunar Phase:
Airmass:
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General Information
Results
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Calculating
Signal-to-Noise:
Exposure Time:
Seconds
Show Plot of Counts
Show Expected SNR Plot
Calculating