ⓘ Sky regions ..

Extended Groth Strip

The Extended Groth Strip is an image of a small region between the constellations of Ursa Major and Bootes, based on the results of a series of observations by the Hubble Space Telescope. It covers an area 70 arcminutes across and 10 arcminutes wide, which correlates to a patch of sky roughly the width of a finger stretched at arms length. The image was assembled from over 500 separate exposures taken with the Space Telescopes Advanced Camera for Surveys at 63 different pointings, spread out over the course of one year from June 2004 to March 2005. The complete image at the highest resolut ...

Field of Streams

The Field of Streams is a patch of sky where several stellar streams are visible and crisscross. It was discovered by Vasily Belokurov and Daniel Zuckers team in 2006 by analyzing the Sloan Digital Sky Survey II SDSS-II data. The team named the area Field of Streams because of so many crisscrossing trails of stars. The Sagittarius Stream of the Sagittarius Dwarf Elliptical Galaxy SagDEG dominates the Field. It has a split trail within the area of the Field of Streams, because SagDEG has wrapped around the Milky Way Galaxy multiple times, which has resulted in overlapping trails. The forkin ...

Hubble Deep Field

The Hubble Deep Field is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. It covers an area about 2.6 arcminutes on a side, about one 24-millionth of the whole sky, which is equivalent in angular size to a tennis ball at a distance of 100 metres. The image was assembled from 342 separate exposures taken with the Space Telescopes Wide Field and Planetary Camera 2 over ten consecutive days between December 18 and 28, 1995. The field is so small that only a few foreground stars in the Milky Way lie within it; ...

Hubble Deep Field South

The Hubble Deep Field South is a composite of several hundred individual images taken using the Hubble Space Telescopes Wide Field and Planetary Camera 2 over 10 days in September and October 1998. It followed the great success of the original Hubble Deep Field in facilitating the study of extremely distant galaxies in early stages of their evolution. While the WFPC2 took very deep optical images, nearby fields were simultaneously imaged by the Space Telescope Imaging Spectrograph and the Near Infrared Camera and Multi-Object Spectrometer.

Hubble Legacy Field

The Hubble Legacy Field is an image of a small region of space in the constellation Fornax, containing an estimated 265.000 galaxies. The original release was composed of Hubble Space Telescope data accumulated over a 16-year period. Looking back approximately 13 billion years it has been used to search for galaxies that existed at that time. The image was taken in a section of the sky with a low density of bright stars in the near-field, allowing much better viewing of dimmer, more distant objects. It builds on the data collected for the Hubble Ultra-Deep Field, the Hubble eXtreme Deep Fi ...

Hubble Ultra-Deep Field

The Hubble Ultra-Deep Field is an image of a small region of space in the constellation Fornax, containing an estimated 10.000 galaxies. The original release was combined from Hubble Space Telescope data accumulated over a period from September 24, 2003, through to January 16, 2004. Looking back approximately 13 billion years it has been used to search for galaxies that existed at that time. The HUDF image was taken in a section of the sky with a low density of bright stars in the near-field, allowing much better viewing of dimmer, more distant objects. In August and September 2009, the HU ...

Mystic Mountain

Mystic Mountain is a photograph and a term for a region in the Carina Nebula imaged by the Hubble Space Telescope. The view was captured by the then-new Wide Field Camera 3, though the region was also viewed by the previous generation instrument. The new view celebrated the telescopes 20th anniversary of being in space in 2010. Mystic Mountain contains multiple Herbig-Haro objects where nascent stars are firing off jets of gas which interact with surrounding clouds of gas and dust. This region is about 7.500 light-years 2.300 pc away from Earth. The pillar measures around three light-years ...

Stripe 82

Stripe 82 is a 300 deg 2 equatorial field of sky that was imaged multiple times by the Sloan Digital Sky Survey from 2000 to 2008. It approximately covers the region with right ascension from 20:00h to 4:00h and declination from -1.26° to +1.26°. Stripe 82 has also been observed using many other telescopes and instruments, a list of which is given below.