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News Release Archive:

News Release 107 of 190

October 21, 1998 12:00 AM (EDT)

News Release Number: STScI-1998-28

Astronomers Unveil Colorful Hubble Photo Gallery

Technical facts about this news release:

About this Object 
Object Name: NGC 7742
Object Description: Face-on Spiral Galaxy
Position (J2000): R.A. 23h 44m 15.94s
Dec. +10° 46' 4.42"
Constellation: Pegasus
Visual Magnitude: 11.6
Distance: 72 million light-years (22 Mpc)
Dimensions: The image is approximately 80 arcseconds across. The entire visible galaxy is 36,000 light-years (11kpc) across.
About the Data 
Instrument: WFPC2
Exposure Date: July 9, 1995
Exposure Time: 1 hour
Filters: Red: F675W(R), Green: F555W(V), Blue: F336W(U)
Principal Astronomers: C. R. Lynds (NOAO/KPNO), J. A. Westphal (CalTech), Earl O'Neil Jr. (NOAO/KPNO), and collaborators.
About this Image 
Image Credit: NASA and The Hubble Heritage Team (STScI/AURA)
Release: October 21, 1998 12:00pm EDT
Orientation: North is about 70 deg. CCW from up.

 

 

 

About the Object
Object Name: NGC 7635, Bubble Nebula (WFPC)
Object Description: O 6.5 Star
Position (J2000): RA: 23h 20m 48.31s
Dec: +61° 12' 06.12"
Constellation: Cassiopeia
Distance: 11,300 light-years (3,500 parsecs)
About the Data
Data Description: Data were provided by the HST proposal 4088 taken by J. Westphal (Caltech) and J. Hester (Arizona State University).
Instrument: WFPC
Exposure Date(s): September 6, 1992
Filters: F502N ([O III]), F656N (H-alpha), and F658N ([N II])
About the Release
Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)
Release Date: October 21, 1998
Color: This image is a composite of separate exposures acquired by the WFPC instrument. Several filters were used to sample various wavelengths. 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:
F502N ([O III]) blue
F656N (H-alpha) green
F658N ([N II]) red