Using Planetary Camera to figure out number of galaxies in universe?

by JamesDPhotography
Question by wasabi makes the world go round: Using Planetary Camera to figure out number of galaxies in universe?
I counted about 80 galaxies in the Planetary Camera of the Hubble Deep Field. The Camera is 35 arc seconds by 35 arc seconds in size, and the entire sky has an area of 41,253 square degrees (degrees), how do I calculate how many galaxies are in the universe? How do I set up the equation?


1 degree= 3600 arc seconds


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