European Faint Object Camera on Hubble sets world record - celebrating the successes of ESA's sharp-sighted camera


Celebrating the successes of ESA's sharp-sighted camera, the FOC
 
Celebrating the successes of ESA's sharp-sighted camera, the Faint Object Camera
 
 
8 March 2002
 
When the new Advanced Camera for Surveys was installed on the ESA/NASA Hubble Space Telescope Thursday noon (European time) it replaced the European Space Agency's Faint Object Camera (FOC). FOC has spent a record-breaking 4340 days (nearly 12 years) in space. Throughout its 12-year lifetime FOC has celebrated a number of successes.
 
Most notable are the first direct image of the atmosphere of a star, the first sighting of surface details on the planet Pluto, and the first image of an 'exposed' black hole. The foremost scientific capability of the FOC was its very high angular resolution, which in practice meant that the FOC could produce extremely sharp images. The superb image quality of FOC was put to use in providing unique close-up views of nearly every class of astronomical object. The camera has among many other things, revealed the first surface details on the planet Pluto, made the first direct images of the atmospheres of giant stars like Betelgeuse, the first image of an 'exposed' black hole, shown circumstellar material around exploding stars, like Nova Cygni, and around supernovae like SN 1987A.

FOC has with its sharp eye penetrated the inner enigmatic cores of active galaxies, where black holes with masses up to several billion times that of our Sun, are hiding. Another impressive achievement was the discovery of the movement of material in the jets which extend from the galaxy M87. The galaxy is at a distance of 45 million light-years and FOC observations of the jet over a number of years, allowed the detection and measurement of the motion of the jet's knots. The FOC measurements have been a key element for the understanding of this impressive phenomenon. FOC's special ability to detect the very faintest ultraviolet light was extensively used to make spectra of very distant quasars. This effort ultimately resulted in a breakthrough in cosmology - the first detection of singly ionised helium in the medium between the galaxies.

Peter Jakobsen, ESA's current project scientist for the FOC, comments on the scientific successes of this sharp-sighted camera: "Although the images obtained with the FOC have only rarely been as photogenic as the famous images from the Wide Field and Planetary Camera 2, FOC has in my opinion served the astronomical community well and brought home its share of scientific 'firsts'."
 
 
FOC being removed from Hubble Space Telescope
 
FOC being removed from the NASA/ESA Hubble Space Telescope during Servicing Mission 3B
 
 

ESA's former project scientist for the FOC, Duccio Macchetto, expresses his feelings at the removal of the FOC: "Naturally you get very involved with a project this important, but I don't feel sad at all. To me FOC has reached the end of a very productive life." And he continues: "the collaboration in ultraviolet and optical astronomy between NASA and ESA that was started with IUE [International Ultraviolet Explorer] and has had as its centrepiece the Hubble project has really been exemplary, and we hope to continue in this way in the future. As Hubble's results show, everyone enjoys the fruits of a 'big science' project like this: scientists, industry and the general public. I look forward to a close and fruitful collaboration between ESA and NASA in the NGST project."
 
 
Notes for editors
 
The new Advanced Camera for Surveys on the ESA/NASA Hubble Space Telescope was installed Thursday 7 March 2002 during a 7.5-hour-long spacewalk. This fantastic new instrument replaced the last of Hubble's original instruments, the Faint Object Camera (FOC), delivered by the European Space Agency. FOC will, at the time of the Space Shuttle's landing on 12 March 2002 (around 08:00 UT), have spent 4340 days in space since the launch on 24 April 1990. This is the longest time that any piece of hardware has spent in space before being retrieved and returned to the ground.

The prime contractor for ESA's Faint Object Camera was Astrium (Germany - formerly Dornier System, Germany).

The Hubble Space Telescope is a project of international cooperation between ESA and NASA.

Project contact
Duccio Macchetto
ESA/Space Telescope Science Institute, Baltimore, USA
Phone: +1-410-338-4790/4861
E-mail: macchetto@stsci.edu

PR contact
Lars Lindberg Christensen
Hubble European Space Agency Information Centre, Garching, Germany
Phone: +49-89-3200-6306 (089 in Germany) (until 12.03.02 +1 301 286 6467)
Cellular (24 hr): +49-173-38-72-621 (0173 in Germany)
E-mail: lars@eso.org
 
 
Detailed image caption
 
Celebrating the successes of ESA's sharp-sighted camera, the Faint Object Camera

This collage shows some of the scientific successes of ESA’s Faint Object Camera. The foremost scientific capability of the FOC was its ultra-sharp images. The superb FOC image quality was put to use in providing unique close-up views of nearly every class of astronomical object, some of which are seen here. In order from top and clockwise:

M87’s Jet (11 o'clock)
With FOC, astronomers discovered the motion of the jet protruding from the galaxy M87. The galaxy is at a distance of 45 million light years and FOC observations of the jet over a number of years allowed detection and measurement of the motion of knots in the jet. These move at speeds almost equal to the speed of light. The FOC measurements have been a key element in the development of physical models for this impressive phenomenon.

Gliese 623b (2 o'clock)
The small star Gliese 623b, seen left of the bright star in the centre, is one of the smallest stars in the Milky Way. This FOC image was the first image that separated the faint star from its bright companion. Gliese 623b is one of the smallest stars ever photographed.

Core of galaxy NGC 6251 (3 o'clock)
This FOC image of the innermost part of the active galaxy NGC 6251 exposed for the first time the environment very close to a black hole. In the image a warped dust ring is seen bathed in blazing ultraviolet light (blue) from the black hole.

Nova Cygni 1992 (5 o'clock)
This FOC picture is a close-up of the nova called Cygni 1992. The star erupted in 1992 and FOC revealed an expanding ring outlining the edge of a bubble of hot gas blasted into space by the nova.

First detection of singly ionised helium (6 o'clock)
FOC’s special ability to detect the very faintest ultraviolet light was extensively used to make spectra of very distant quasars. An effort that ultimately resulted in the first detection of singly ionised helium in the medium between the galaxies. This was characterized by scientists as a breakthrough in cosmology.

Pluto and its moon Charon (7 o'clock)
This FOC image taken in 1994 gave at the time the clearest view of our Solar System’s most distant planet Pluto (large orange disk) and its moon Charon (small orange disk).

The first image of the atmosphere of a star (9 o'clock)
The star Betelgeuze is seen here in a very high magnification view made possible by ESA’s FOC. For the first time it was possible to see details in the atmosphere in a star outside our Solar System.

Copyright: European Space Agency & NASA
 
 


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Related links

 •  ESA Science (http://www.esa.int/esaSC/index.html)
 •  Hubble Scientific & Technical web site (http://sci.esa.int/hubble/index.cfm)
 •  Next Generation Space Telescope (http://sci.esa.int/home/ngst/)