baalke@mars.jpl.nasa.gov (Ron Baalke) (01/29/91)
Archive-name: space/voyager/imdisp/1991-01-28
Archive-directory: ames.arc.nasa.gov:/pub/SPACE/IMDISP/ [128.102.18.3]
Original-posting-by: baalke@mars.jpl.nasa.gov (Ron Baalke)
Original-subject: Voyager CD-ROMs
Reposted-by: emv@ox.com (Edward Vielmetti)
I've received a number of inquiries about the Voyager images available
on CD-ROMs. There are eight CD-ROMs that contain about 16,000 images taken
by Voyager 1 and Voyager 2 on their encounters with Jupiter, Saturn and
Uranus. The CD-ROMs are available to the general public at the NSSDC
(National Space Science Data Center) at the Goddard Space Flight Center.
There is a charge of about $75 for the 8 CD-ROM set, and NASA employees
get a discount. You can contact the NSSDC at:
National Space Science Data Center
Request Coordination Office
Goddard Space Flight Center
Code 633
Greenbelt, MD 20771
Telephone: (301) 286-6695
Email address: request@nssdca.gsfc.nasa.gov
The images are stored in compressed format on the CD-ROM with each
image being about 220K. A decompression program, called PCDCOMP, and an
image display program that runs on an IBM PC computer, call IMDISP, are
included with the CD-ROMs. The most recent versions of the PCDCOMP
(version 2.0) and IMDISP (version 5.6) programs can also be obtained via
anonymous ftp at ames.arc.nasa.gov site under the filename imdisp56.zip in the
pub/SPACE/IMDISP directory. When the images are uncompressed, they will be
about 670K in size, so a large hard disk is recommended. For each compressed
image there is a corresponding "browse" image, which is a scaled down version
of the original image (1/16 size) which can be viewed directly off the CD-ROM.
All of the images are the raw, unprocessed images taken by the Voyager
spacecraft. All of the images are monochrome images since Voyager carried a
black-and-white camera. All of the color images you've might of seen on
the news and in magazines were images created by the Image Processing
Lab at JPL; there are no color images on the CD-ROMs. However, the IMDISP
program mentioned before gives you the capability to perform some image
processing functions on the images, as well as applying color palettes
to the images.
A set of four CD-ROMs containing the Neptune images taken by Voyager 2
is due to be released at the end of February 1991, and these CD-ROMs will also
be available at NSSDC.
___ _____ ___
/_ /| /____/ \ /_ /| Ron Baalke | baalke@mars.jpl.nasa.gov
| | | | __ \ /| | | | Jet Propulsion Lab |
___| | | | |__) |/ | | |___ M/S 301-355 | It's 10PM, do you know
/___| | | | ___/ | |/__ /| Pasadena, CA 91109 | where your spacecraft is?
|_____|/ |_|/ |_____|/ | We do!