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

after subtracting the bias level from your count, you get a value of (N). to find the noise, you calculate sqrt(N) = noise.

now the question,

As above, your image has a noise of sqrt(N). What can you say about the presence of a faint star in the image that has a total number of counts that is LESS than sqrt(N)

2. Relevant equations

none

3. The attempt at a solution

i really havent a clue about this question.

i would have guessed that its something like the sqrt(N) is an average value, so it is entirely possible for there to be a count less than that value.

but i dont know enough about the subject to make a decent guess at the question.

thanks

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# Pixel count for faint star

Can you offer guidance or do you also need help?

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