Dynamics Explorer - 1 (DE-1)
Spin-Scan Auroral Imager (SAI)
Image Data
Survey images from the Dynamics Explorer - 1 Spin-scan Auroral Imager's
(DESAI) Vacuum Ultra-Violet (VUV) photometer (labeled "C") are available
as GIFTM images and are sorted by year
(1981 to 1991) and Day-of-Year (DOY). For each DOY, there are
sub-directories that correspond to the VUV photometer's
filter number and name used with that sequence
of images. In the filter sub-directory the image filenames are labeled
by the time of the first SAI image in the sequence, i.e.,
HHMMSS_C.gif. E.g., the 1981/266 136W filter images starting at
23:32:00 UT are found in the file /1981/266/1_136W/233200_C.gif.
To request any DESAI science-level data please send e-mail to
Mary Rae Dvorsky.
Alternatively, you can use the NASA Data Archive and Distribution Service's
(NDADS)
automated request system at the NASA Space Science Data Center (NSSDC) to
retrieve DESAI MAF data.
Command Sequences
A database containing lists of all of the Global Aurora Images which
could be obtained from the University of Iowa DESAI archives is
accessible via a Telnet connection to our database server account.
This database can provide you with
- The SAI image name(s) for the particular times of your interest.
- The SAI instrument commands which were used for your desired time interval.
This would help you deside if the corresponding images would be of
any use to you in your research because it would show you what filters
and viewing modes were used for the desired imaging time periods.
- Viewing geometry previewing, providing a crude preview of the
viewing geometry of Earth for any time during DE-1's lifetime. This
shows what the field-of-view from DE-1 would have been for a specific
input time, helping you decide if the images would contain the areas of
Earth you are studying.
This database access program requires that your WWW browser support the
TELNET operation. It can be accessed directly by your browser at
cp2vax.physics.uiowa.edu
(128.255.32.177). Login with the username: SAI.
DESAI Image Analysis Software
A package of sample image analysis programs in FORTRAN is available to
demonstrate how to read and manipulate DESAI images in the MAF format.
This also includes complete documentation on the MAF image format.
Three different compressed ZIP binary archives are currently available.
If you do not have ZIP software, but have another type you can contact
Rae Dvorsky
for assistance.
Dynamics Explorer and SAI Related Photo Gallery
A gallery of Dynamics Explorer related
images and photographs collected over the years is available for
downloading. Most are scans of photgraphs or logos.
SAI Bibliography
Local Contact Information
Related Dynamics Explorer and Auroral Topics
Last Modified: Sun Sep 17 11:57:16 2006
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