News Release Archive:

News Release 395 of 1051

October 30, 2007 09:00 AM (EDT)

News Release Number: STScI-2007-36

'Dancing with the Stars' Takes on a Whole New Twist

Technical facts about this news release:

About the Object
Object Name: Arp 87
Object Description: Interacting Galaxy Pair
Position (J2000): R.A. 11h 40m 46s.12
Dec. +22° 26' 44".80
Constellation: Leo
Distance: Approximately 300 million light-years (92 million parsecs) away.
Dimensions: This image is roughly 2.3 arcminutes (203,000 light-years or 62 kiloparsecs) wide.
About the Data
Data Description: The Hubble image was created from HST data from proposal 11092: K. Noll, H. Bond, C. Christian. L. Frattare, F. Hamilton, Z. Levay, M. Mutchler, W. Januszewski (Hubble Heritage Team/STScI).
Instrument: WFPC2
Exposure Date(s): February 2007
Exposure Time: 6.3 hours
Filters: F450W (B), F555W (V), F656N (Halpha + [N II]), and F814 (I)
About the Image
Image Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)
Release Date: October 30, 2007

This image is a composite of many separate exposures made by the WFPC2 instrument on the Hubble Space Telescope. Three filters were used to sample broad wavelength ranges, while one filter was used to sample a narrow wavelength band. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:

F450W (B) blue
F555W (V) green
F656N (Halpha + [N II]) and F814 (I) red


Orientation/Scale: Interacting Galaxy Pair Arp 87