How big is Hubble Deep Field?
Hubble Deep Field image covers a speck of the sky only about the width of a dime 75 feet away.
How many orbits did it take to make the observations?
It took 400 orbits to make the observations.
How much viewing time was needed to make all the exposures?
The 800 exposures amounted to about 1 million seconds or 11.3 days of viewing time. The average exposure time was 21 minutes.
If astronomers made the Hubble Ultra Deep Field observation over the entire sky, how long would it take?
The whole sky contains 12.7 million times more area than the Ultra Deep Field. To observe the entire sky would take almost 1 million years of uninterrupted observing.
how far can hubble see?
10-15 billion light years away. or 87,985,440,000,000,000,000,000 miles tops (87 sectillion miles).
This post was edited by juliusjuice on Aug 24 2009 02:31pm