News Release Archive:

News Release 14 of 168

January 9, 2014 10:15 AM (EST)

News Release Number: STScI-2014-02

Electronic Book for Students with Visual Impairments Reaches for the Stars

Technical facts about this news release:

About the Object
Object Name: Tarantula Nebula, 30 Doradus, 30 Dor, NGC 2070
Object Description: Emission Nebula in the Large Magellanic Cloud
Position (J2000): R.A. 05h 38m 42s.36
Dec. -69° 06' 03".24
Constellation: Doradus
Distance: Approximately 170,000 light-years (52,000 parsecs)
About the Data
Data Description:

The ACS/WFC3 data are from the HST proposal 12499: D. Lennon (ESA), E. Sabbi (ESA/STScI), J. Anderson, R. van der Marel, T. Sohn, and N. Walborn (STScI), L. Bedin (INAF, Padua), C. Evans (Royal Observatory Edinburgh), H. Sana (STScI/ESA), N. Langer (University of Bonn), S. de Mink (Carnegie Institution of Washington), P. Crowther (University of Sheffield), A. Herrero (IAC, Tenerife), N. Bastian (USM, Munich), and E. Bressert (Australia Telescope National Facility);

and 12939: E. Sabbi (ESA/STScI), A. Aloisi, J. Anderson, K. Gordon, A. Koekemoer, R. van der Marel, N. Panagia, and C. Christian (STScI), M. Boyer (NASA/GSFC), C. Evans (Royal Observatory Edinburgh), J. Gallagher (University of Wisconsin, Madison), E. Grebel (Astronomisches Rechen-Institut Heidelberg), S. de Mink (Carnegie Institution of Washington), S. Larsen (Radboud Universiteit Nijmegen), D. Lennon (ESA), M. Tosi (INAF, Osservatorio Astronomico di Bologna), and D. Zaritsky (University of Arizona)

Instruments and Filters: ACS/WFC: F555W (V), F658N (H-alpha), F775W (i)
WFC3/IR: F110W (YJ), F160W (H)
WFC3/UVIS: F275W, F336W, F775W (i)
Exposure Date(s): October 2011 - April 2013
Exposure Time: 103 hours
About the Release
Image Credit: NASA, ESA, and E. Sabbi (STScI)
Release Date: January 7, 2014

The images in this release are composites of separate exposures obtained with the ACS and WFC3 instruments on the Hubble Space Telescope. Several filters were used to sample broad and narrow 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:

30 Doradus Infrared Composite
ACS/WFC: F775W (i) blue
WFC3/IR: F110W (YJ) green
WFC3/IR: F160W (H) red

30 Doradus Visible Composite
ACS/WFC F658N (H-alpha) luminance
WFC3/UVIS: F275W, F336W  blue
ACS/WFC: F555W (V) cyan
ACS/WFC + WFC3/UVIS: F775W (i) orange


Orientation/Scale: Compass and Scale Image for 30 Doradus IR