CCE Summary Images
Summary images produced from the CCE instruments are available for
viewing. The on-line selection, currently several weeks of data, will be
expanded in time to cover the entire mission. DOY 248 of 1984 has the
best selection of images for viewing. The images, which are partioned
within subdirectories, are accessible through the following hot spot:
Get
Summary Images
here.
Image Descriptions
There are six types of images that form a set of standard summary images:
- CHEM - a set of particle color spectrograms
- HPCE - a set of particle color spectrograms (description)
- MEPA - a set of particle color spectrograms
- MAG - magnetometer line plot (description)
- PWE - plasma wave line plot
- ORB - plot of spacecraft location
The particle instruments CHEM, HPCE and MEPA each have a set of color
spectrograms that spans one orbit, perigee to perigee, which is roughly
16 hours in length. The number of images and the content of each set varies
slightly depending on the configuration of the instrument.
The field instruments MAG and PWE each have one type of line plot that spans
a 24-hour period, midnight to midnight, in three 8-hour panels. The MAG and
PWE images are referenced as mag01 and pwe01.
One-orbit plots of CCE spacecraft location are given with indicators
(asterisks) of position at one-hour steps and are referenced as orb01.
Subdirectory Organization
The subdirectories are first partioned by year of mission (1984 - 1989).
Under each year subdirectory are 365 subdirectories representing the
days of year (DOY) within that year. Each DOY subdirectory contains the
images which start within that day. For MAG and PWE there will be three
8-hour images each. For CHEM, HPCE, and MEPA there will be one and possibly
two sets of 16-hour orbit images.
Image File Names
Each image file, stored in GIF format, has a prefix, root and suffix defined
as follows:
- prefix of five or six characters that identifies the instrument
and image type,
- root of 4 characters, preceeded by a "_", where one character is the
year within the 1980 decade and three characters are the day of the
year (DOY) where Jan 1 is 001, and
- suffix of one character that identifies the start hour of the image
span of time; that is, a means a start time within 0000-0059
UT and so on through x which means a start time within
2300-2359 UT.
For example hpce01_4248n.gif contains a color spectrogram image of HPCE
energy and angular distributions vs. time
from 1984 for an orbit starting between 1300 and 1359 UT on DOY 248.