News Release Archive:

News Release 24 of 34

March 17, 2009 09:00 AM (EDT)

News Release Number: STScI-2009-12

Quadruple Saturn Moon Transit Snapped by Hubble

Technical facts about this news release:

About the Object
Object Name: Saturn
Object Description: Planet with Satellites
Distance: The semi-major axis of Saturn's orbit about the sun is 9.5 astronomical units (A.U.) or roughly 1.4 billion km.
Dimensions: The planet (without rings) has a diameter of roughly 75,000 miles (120,000 km) at the equator.
About the Data
Data Description: The Hubble images and videos were created from HST data from proposal 11956: K. Noll, Z. Levay, M. Mutchler, L. Frattare, C. Christian, F. Hamilton, and H. Bond (The Hubble Heritage Team/STScI/AURA). B. Januszewski (STScI), M.H. Wong (UC Berkeley/STScI), and C. Go (Phillipines) also helped with image conception, proposal preparation/processing and data analysis.
Instrument: WFPC2
Exposure Date(s): February 24, 2009
Filters: F439W (B), F555W (V), and F675W (R)
About the Release
Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)
Release Date: March 17, 2009
Color: The image is a composite of separate exposures made by the WFPC2 instrument on the Hubble Space Telescope. Three filters were used to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:
F675W (R) red
F555W (V) green
F439W (B) blue
Orientation/Scale: Compass and Scale Image of Saturn