(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Observing a star with a telescope where a photomultiplier is applied, 5 photons per second are detected on the average.

Assuming a Poissonian statistics and the the background is negligible, determine the integration time useful to measure the flux with a standard deviation of 5% of the average flux, and the determine the magnitude error.

2. Relevant equations

Poissonian statistic: [itex]P(n)=e^{-\lambda}{\lambda^n}/{n!}[/itex]

3. The attempt at a solution

I can not outline the problem... Any suggestion please?

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# Homework Help: Integration time for poissonian signal

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