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(Solved): 1 Flux Density A Very Faint, Unresolved Galaxy Of Magnitude My = 29 Is Observed By A Detector System...
1 Flux Density A very faint, unresolved galaxy of magnitude my = 29 is observed by a detector system. The entrance aperture of the system has a diameter of 3.6 m and the system has an efficiency of 70%. A V-band filter is used (transmission maximum at 0.55 um and an effective bandwidth A = 0.089 um). 1. Calculate the flux density of this galaxy. Use the fact that the flux density of a source with my = 0 is 3.92 x 10-8 W m2 um-1 2. What is the flux density in Jy (Jansky) of this source? 3. Compute the number of photons per second hitting the detector.
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