Compass and Scale Image of Abell 2744

 Compass and Scale Image of Abell 2744

Credits

Illustration: NASA, ESA, and Z. Levay (STScI);
Science: NASA, ESA, M. Montes (IAC), and J. Lotz, M. Mountain, A. Koekemoer, and the HFF Team (STScI)

About The Object
Object Name Abell 2744, Pandora's Cluster
Object Description Galaxy Cluster and Gravitational Lens
R.A. Position 00h 14m 21s.2
Dec. Position -30° 23' 50".1
Constellation Sculptor
Distance 3.5 billion light-years
About The Data
Data Description Data of Abell 2744 were obtained as part of the HST proposals : R. Dupke (Eureka Scientific, Inc.) et al., : S. Rodney (JHU) et al., and : J. Lotz (STScI) and the Frontier Fields Team. The science team includes: M. Montes and I. Trujillo (Instituto de Astrofísica de Canarias/Universidad de La Laguna, Tenerife, Spain).
Instrument HST>ACS/WFC and HST>WFC3/IR
Exposure Dates October 2009; August 2013 - July 2014
Filters ACS/WFC: F435W (B), F606W (V), F814W (I) WFC3/IR: F105W (Y), F125W (J), F140W (JH), F160W (H)
About The Image
Color Info This image is a composite of separate exposures acquired by the ACS and WFC3 instruments on the Hubble Space Telescope. Several filters were used to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are: Blue: F435W (B) + F606W (V) Green: F814W (I) + WFC3/IR F105W (Y) Red: WFC3/IR F125W (J) + F140W (JH) + F160W (H) Blue: J-band Surface Brightness
Compass Image Compass and Scale Image of Abell 2744
About The Object
Object Name A name or catalog number that astronomers use to identify an astronomical object.
Object Description The type of astronomical object.
R.A. Position Right ascension – analogous to longitude – is one component of an object's position.
Dec. Position Declination – analogous to latitude – is one component of an object's position.
Constellation One of 88 recognized regions of the celestial sphere in which the object appears.
Distance The physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs.
Dimensions The physical size of the object or the apparent angle it subtends on the sky.
About The Data
Data Description
  • Proposal: A description of the observations, their scientific justification, and the links to the data available in the science archive.
  • Science Team: The astronomers who planned the observations and analyzed the data. "PI" refers to the Principal Investigator.
Instrument The science instrument used to produce the data.
Exposure Dates The date(s) that the telescope made its observations and the total exposure time.
Filters The camera filters that were used in the science observations.
About The Image
Image Credit The primary individuals and institutions responsible for the content.
Publication Date The date and time the release content became public.
Color Info A brief description of the methods used to convert telescope data into the color image being presented.
Orientation The rotation of the image on the sky with respect to the north pole of the celestial sphere.