At the top the source information you entered before is repeated. Feel free to edit it and add the information about the observation properties and instrument configuration.
Please note that the slit length is arbitrary for point sources because we use an optimal extraction related algorithm to get the maximum throughput. For extended sources please set a value for the slit length.
GMACS has a blue and a red side which are configured individually. Please note that the exposure time in this version of SAO-ETC is the same for both sides.