Q:  At what magnitude would the TRGB appear in a galaxy in
             the Coma Cluster?


              In the pictured Fornax galaxy, the TRGB appears at
              apparent magnitude

                   Fornax:  approximately    m  =  27.4      


              If the Coma Cluster is more distant by 3.8 magnitudes,
              then this feature would appear in Coma at

                   Coma:    approximately    m  =  31.2