We are pleased to announce the release of a software tool known as ticgen that an be used to calculate TESS magnitudes from various different bandpasses, and also calculates the TESS noise level for different brightness sources. The software is a command line tool and can be downloaded from our Github site, where we also provide more information. Both ticgen and our other software tvguide can be used to aid users in writing proposals.
Additionally, we will soon be released a Web tool that combines the functionality of ticgen and tvguide.