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Introductory Physics Homework Help
Calculate Photons/Angstrom at Cassegrain Telescope - V=9, zenith=60°
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[QUOTE="goleafsgo113, post: 771960, member: 17930"] ok the question is, Calculate the photons you expect to receive per Angstrom at the focus of a Cassegrain telescope of aperture 30cm for a star of V magnitude 9.0, observed at a zenith distance of 60 degrees. Assume extinction coefficient of 0.15 magnitudes per airmass, reflectivity at each surface = 90%, wavelength = 5500 Angstrom. I'm overwhelmed with all the numbers given and cannot find any equations that are useful to this question. If anyone has an idea please give me a hint on where to start or how to approach this question. Thanks in advance. [/QUOTE]
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Introductory Physics Homework Help
Calculate Photons/Angstrom at Cassegrain Telescope - V=9, zenith=60°
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