|
The MESSENGER XRS CDR data consist of x-ray spectra and
instrument data collected by the XRS instrument during cruise,
fly-by and orbital operations at Mercury, along with observations
of Venus, and observations taken of Cassiopeia-A for calibration.
|
|
|
Citation |
R. D. Starr (GSFC), MESSENGER E/V/H XRS CALIBRATED (CDR) SPECTRA
V1.0, NASA Planetary Data System, 2010. |
Digital Object Identifier (DOI) |
Unable to retrieve DOI information. Please contact the PDS Help Desk for assistance.
|
Data Set Abstract |
Abstract ======== This data set consists of the MESSENGER XRS
calibrated observations, also known as CDRs. Each XRS observation
results in four X-ray spectra. When an X-ray interacts with one
of the four detectors, a charge or voltage pulse is generated.
This signal is converted into one of 2^8 (256) channels, which
are correlated to energy. Over a commanded integration time
period a histogram of counts as a function of energy (channel
number) is recorded. The EDRs are the number of events in each
channel of the four detectors accumulated over the integration
period. Channels above or below the useful energy range of the
detectors are not transmitted. The result is three 244-channel
GPC histograms and one 231-channel solar monitor histogram, each
of which is designated as a single X-ray spectrum. In addition to
the science data, associated instrument parameters are included. |
Search/Access Data |
Geosciences Web Services
Mercury Orbital Data Explorer
Geosciences Online Archives
|
|
|
Additional Information |
Mission Information |
MESSENGER
|
Data Set Information |
MESS-E/V/H-XRS-3-CDR-SPECTRA-V1.0 |
Instrument Host Information |
MESS
|
Instrument Information |
XRS
|
Target Information |
CALIBRATION
EARTH
MERCURY
VENUS
|
|
|