HDF Index

Sky & Telescope's Weekly News Bulletin

January 1996

Hubble Goes Deep


Hubble's Deep Field
Hi resolution view of a section of the field.

(88K gif) Courtesy R. Williams, STScI

Hubble's Deep Field
Med resolution view of whole field.

(100K jpg)

Deepest Image Yet

On January 15th, astronomers meeting in San Antonio, Texas, unveiled the deepest image ever taken by the Hubble Space Telescope. It's actually 342 separate exposures taken over 10 consecutive days in late December 1995 and added together.

Location, Size and Contents

Located near the handle of the Big Dipper, the chosen field has a high galactic latitude and looks relatively empty through even the largest ground-based telescopes. It encompasses an area of the sky no larger than a grain of sand held at arms length. But in that 2.7 x 2.7 arcminute portion of sky, the HST uncovered more than 1,500 galaxies in both familiar and peculiar forms down to about 30th magnitude.

A View back through Time

The image is so deep that astronomers believe they are seeing galaxies during the early days of the universe, perhaps as little as a billion years after the Big Bang. They also hope it will bring answers to fundamental cosmological questions such as when galaxies first appeared and the ultimate fate of the universe.

Based on Copyright © material prepared in 1996 by Sky Publishing Corporation, All Rights Reserved.