GMACS Exposure Time Calculator v1.6


Telescope size:
Object Type (assume all point source)



= mag
Grating:
Redshift:
Exposure time: seconds
Seeing: arcseconds
Slit width: arcseconds
Days from
new moon:
Start Wavelength Angstrom (between 3500* and 10360)
Stop Wavelength Angstrom (between 3500* and 10360)
Binned pixel scale Angstrom (any number, 'default' is 1/3 of delta lambda)
Calculate:


README before you try the ETC

*the next version of the ETC will extend the blue start wavelength range to 3200 Angstroms