The Hubble Space Telescope (HST)

A telescope in space

orbiting the Earth and pointing
at stars and galaxies

Initial problems

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M100 larger view Figure caption	Figure caption

An upgradable telescope

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Find out about Hubble's science instruments
with this flash animation. (credit: esa/nasa)

Amazing results

The Hubble Deep Field (HDF)

The HDF location

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HDF

HDF: Full resolution (8.4 MB)
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The Hubble ULTRA Deep Field (HUDF)

HUDF

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HUDF Specifications

Telescope:	Hubble Space Telescope (HST).
Instruments:	ACS and NICMOS.
Image:	800 exposures (about 20 minutes each).
Total exposure time:	11.3 days (ACS) and 4.5 days (NICMOS).
Field of view:	11.5 arcminutes², which is smaller than a grain of sand held at arm's length.
Limiting magnitude:	30^thmagnitude (2.5⁸ = 1600 times fainter than our nightsky of apparent magnitude 22).
Number of galaxies:	about 10,000.
Look-back time:	more than 13 billion years.
Highest redshift:	z=7 to 12, when the universe was just 800 to 400 million years old.

Walk through the HUDF with
'Skywalker'

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Download all the final reduced images (in fits format), object catalogs,
and ancillary files from the Hubble Space Telescope Ultra Deep Field program here.

108 Distant galaxies in HUDF Movie caption (0:20)	Distant galaxies in HUDF Figure caption
Travel across 95% of the universe, through the HUDF in less than 1 min. Movie caption (0:58)	HUDF, the movie Movie caption (4:48)

The future: the James Webb Telescope

JWST in space (2013) Figure caption	A real size model Figure caption
JWST Deployment Movie caption (2:03)

background photo: Hubble's Sharpest View of the Orion Nebula.
(Credit: NASA, ESA, M. Robberto (Space Telescope Science Institute/ESA) and the Hubble Space Telescope Orion Treasury Project Team.)
http://hubblesite.org/newscenter/archive/releases/2006/01/image/a/