Data Description

This page summarizes information about the selected resource and its origin based on SPASE metadata.

Table of Contents

  1. Product
  2. Repositories
  3. Instrument
  4. Observatory
  5. Persons

SPASE version 2.0.0

Numerical Data Product: Polar UVI L1 CDF

Resource ID
spase://VMO/NumericalData/POLAR/UVI/L1_CDF Get XML
Name
Polar UVI L1 CDF
Description

The Ultraviolet Imager (UVI) is a small camera that detected and produced images of the ultraviolet light of the aurora, day and night. Using any of five specially designed filters the UVI camera imaged an eight degree circular field of view. Images are generated once every 37 seconds with a nominal pixel angular resolution of 0.036 degrees.

Additional information
UVI Home Page

The Polar Ultraviolet Imager (UVI) Home Page contains links that describe the instrument, its operation, allow the user to view 36 second images and key parameter mosaics from the mission and download software, plus links to the UVI data archive, to lists of UVI publications and presentations, and several miscellaneous mission sites.

Contact
Role Person
1. Principal investigator Prof. George K. Parks Get XML
2. Metadata contact Peggy Sloan Get XML
Release date
2009-08-01 00:00:00
Repository #1
Name
spase://SMWG/Repository/NASA/NSSTC/POLAR.UVI Get XML
Availability
Online
Access rights
Open
URL
Polar UVI NSSTC Data Archive
Format
CDF
Repository #2
Name
CDAWeb Data Repository FTP Interface Get XML
Availability
Online
Access rights
Open
URL
ftp://cdaweb.gsfc.nasa.gov/pub/istp/polar/uvi_level1/

FTP repository of Polar Level 1 UVI image data in CDF format at CDAWeb. This repository mirrors data from NSSTC.

Format
CDF
Provider processing level
Calibrated
Provider version
Level 1
Instrument
Ultraviolet Imager (UVI) Get XML
Measurement type
Image intensity
Temporal description
Start date
1996-05-26 00:00:00
Stop date
2008-04-16 00:00:00
Cadence
37 seconds
Spectral range
Ultraviolet
Observed regions
Earth.NearSurface.Ionosphere
↑

Parameters

Parameter #1

Name
INT_IMAGE
Parameter key
INT_IMAGE
Description

The image array with instrument CCD pixel values.

Caveats

All elements contain image pixel values.

Structure
Size
228 200
Wave type
Photon
Quantity
Intensity
Qualifier
Integral
Wavelength range
Spectral range
Ultraviolet
Low wavelength
125
High wavelength
190
Units
nanometers
Bins
Bin Band name Low wavelength High wavelength
1 1304 filter 125 135
2 1356 filter 128 142
3 LBHS filter 135 160
4 LBHL filter 160 190
5 SOLR filter 175 190

Parameter #2

Name
EPOCH
Parameter key
EPOCH
Description

Timestamp of first major frame of image

Valid minimum
24-Feb-1996 00:00:00.000
Valid maximum
16-Apr-2008 23:59:59.999
Parameter type
Temporal

Parameter #3

Name
SC_DATE
Parameter key
SC_DATE
Description

Spacecraft truncated Julian date

Units
Days since midnight Oct. 10, 1995
Parameter type
Temporal

Parameter #4

Name
SC_TIME
Parameter key
SC_TIME
Description

Spacecraft time

Units
msec
Parameter type
Temporal

Parameter #5

Name
MCP
Parameter key
MCP
Description

Microchannel plate voltage

Units
volts
Parameter type
Other

Parameter #6

Name
BASEPLATE
Parameter key
BASEPLATE
Description

Baseplate temperature

Units
deg. C
Valid minimum
-25.0
Valid maximum
40.0
Parameter type
Other

Parameter #7

Name
PRIDET
Parameter key
PRIDET
Description

Primary detector electronics temperature

Units
deg. C
Valid minimum
-25.0
Valid maximum
40.0
Parameter type
Other

Parameter #8

Name
SECDET
Parameter key
SECDET
Description

Secondary detector electronics temperature"

Units
deg. C
Valid minimum
-25.0
Valid maximum
40.0
Parameter type
Other

Parameter #9

Name
OPTBENCH
Parameter key
OPTBENCH
Description

Optical bench temperature

Units
deg. C
Valid minimum
-20.0
Valid maximum
40.0
Parameter type
Other

Parameter #10

Name
SC_BAFFLE
Parameter key
SC_BAFFLE
Description

Baffle temperature (spacecraft)

Units
deg. C
Valid minimum
-60.0
Valid maximum
150.0
Parameter type
Other

Parameter #11

Name
RADIATOR
Parameter key
RADIATOR
Description

Radiator temperature

Units
deg. C
Valid minimum
-110.0
Valid maximum
60.0
Parameter type
Other

Parameter #12

Name
SC_STKHSE
Parameter key
SC_STKHSE
Description

Stack housing temperature (spacecraft)

Units
deg. C
Valid minimum
-30.0
Valid maximum
50.0
Parameter type
Other

Parameter #13

Name
SC_STKELE
Parameter key
SC_STKELE
Description

Stack electronics temperature (spacecraft)

Units
deg. C
Valid minimum
-30.0
Valid maximum
50.0
Parameter type
Other

Parameter #14

Name
METERPNL
Parameter key
METERPNL
Description

Metering panel temperature

Units
deg. C
Valid minimum
-20.0
Valid maximum
40.0
Parameter type
Other

Parameter #15

Name
TOPPNL
Parameter key
TOPPNL
Description

Top panel temperature

Units
deg. C
Valid minimum
-20.0
Valid maximum
40.0
Parameter type
Other

Parameter #16

Name
SECSENSPNL
Parameter key
SECSENSPNL
Description

Secondary sensor panel temperature

Units
deg. C
Valid minimum
-20.0
Valid maximum
40.0
Parameter type
Other

Parameter #17

Name
BOTTOMPNL
Parameter key
BOTTOMPNL
Description

Bottom panel temperature

Units
deg. C
Valid minimum
-20.0
Valid maximum
40.0
Parameter type
Other

Parameter #18

Name
BAFFLE
Parameter key
BAFFLE
Description

Baffle temperature (operational)

Units
deg. C
Valid minimum
-60.0
Valid maximum
150.0
Parameter type
Other

Parameter #19

Name
FWMOTOR
Parameter key
FWMOTOR
Description

Filter wheel motor temperature

Units
deg. C
Valid minimum
-20.0
Valid maximum
40.0
Parameter type
Other

Parameter #20

Name
CCD
Parameter key
CCD
Description

CCD temperature

Units
deg. C
Valid minimum
-90.0
Valid maximum
50.0
Parameter type
Other

Parameter #21

Name
DETCASE
Parameter key
DETCASE
Description

Detector case temperature

Units
deg. C
Valid minimum
-25.0
Valid maximum
40.0
Parameter type
Other

Parameter #22

Name
STKHSE
Parameter key
STKHSE
Description

Stack housing temperature (operational)

Units
deg. C
Valid minimum
-30.0
Valid maximum
50.0
Parameter type
Other

Parameter #23

Name
STKELE
Parameter key
STKELE
Description

Stack electronics temperature (operational)

Units
deg. C
Valid minimum
-30.0
Valid maximum
50.0
Parameter type
Other

Parameter #24

Name
HVPS_TEMP
Parameter key
HVPS_TEMP
Description

High voltage power supply temperature

Units
deg. C
Valid minimum
-25.0
Valid maximum
50.0
Parameter type
Other

Parameter #25

Name
+5V
Parameter key
+5V
Description

+5 voltage monitor

Units
volts
Valid minimum
4.3
Valid maximum
5.8
Parameter type
Other

Parameter #26

Name
+5I
Parameter key
+5I
Description

+5 current monitor

Units
mAMPS
Valid minimum
350.0
Valid maximum
650.0
Parameter type
Other

Parameter #27

Name
+15V
Parameter key
+15V
Description

+15 voltage monitor

Units
volts
Valid minimum
13.0
Valid maximum
16.0
Parameter type
Other

Parameter #28

Name
-15V
Parameter key
-15V
Description

-15 voltage monitor

Units
volts
Valid minimum
-16.0
Valid maximum
-13.0
Parameter type
Other

Parameter #29

Name
+15I
Parameter key
+15I
Description

+15 current monitor

Units
mAMPS
Valid minimum
60.0
Valid maximum
200.0
Parameter type
Other

Parameter #30

Name
-15I
Parameter key
-15I
Description

-15 current monitor

Units
mAMPS
Valid minimum
40.0
Valid maximum
150.0
Parameter type
Other

Parameter #31

Name
SUSPECT
Parameter key
SUSPECT
Description

Data quality suspect flag

Caveats

0=OK 1=Suspect

Parameter type
Other

Parameter #32

Name
SYSTEM
Parameter key
SYSTEM
Description

System ID

Caveats

0=PRIMARY, 1=SECONDARY

Parameter type
Other

Parameter #33

Name
FILTER
Parameter key
FILTER
Description

Filter

Caveats

0=HOME 1=1304 2=1356 3=LBHS 4=LBHL 5=SOLR 6=SHUTTER 7=UNK

Parameter type
Other

Parameter #34

Name
MIRPOS
Parameter key
MIRPOS
Description

Mirror position

Caveats

0=NOTFULL 1=FULLEXT

Parameter type
Other

Parameter #35

Name
DOORPOS
Parameter key
DOORPOS
Description

Aperture door position

Caveats

0=UNK 1=FULLEX 2=OPEN 3=CLOSED

Parameter type
Other

Parameter #36

Name
GAIN
Parameter key
GAIN
Description

Gain step

Valid minimum
0
Valid maximum
20
Parameter type
Other

Parameter #37

Name
HVPSEN
Parameter key
HVPSEN
Description

High voltage power supply enable

Caveats

0=DISABLED 1=ENABLED

Parameter type
Other

Parameter #38

Name
UVIMODE
Parameter key
UVIMODE
Description

Instrument operating mode

Caveats

0=UNK 1=NORMAL 2=STAR 3=IDLE 64-67=SYNC

Parameter type
Other

Parameter #39

Name
FRAMERATE
Parameter key
FRAMERATE
Description

Actual integration period

Caveats

Valid numbers: 1, 2, 4

Units
major frames
Parameter type
Other

Parameter #40

Name
OBSEQNUM
Parameter key
OBSEQNUM
Description

Observation sequence number

Parameter type
Other

Parameter #41

Name
SEQSTEP
Parameter key
SEQSTEP
Description

Sequence step number

Parameter type
Other

Parameter #42

Name
RECORD
Parameter key
RECORD
Description

Number of images to record with current gain/filter

Parameter type
Other

Parameter #43

Name
LOOP
Parameter key
LOOP
Description

Sequence pass count (loop counter)

Parameter type
Other

Parameter #44

Name
ITIME
Parameter key
ITIME
Description

Nominal integration period

Caveats

Valid numbers: 1, 2, 4, 5, 6

Units
major frames
Parameter type
Other

Parameter #45

Name
UVITLM
Parameter key
UVITLM
Description

UVI Telemetry Mode

Caveats

0=Science 1=Maneuver 2=Contingency 3=Engineering

Parameter type
Other

Parameter #46

Name
SAFEING
Parameter key
SAFEING
Description

Safe mode enable

Caveats

0=Disabled 1=Enabled

Parameter type
Other

Parameter #47

Name
PFLCK
Parameter key
PFLCK
Description

Platform Lock

Caveats

0=Locked 1=Out of lock

Parameter type
Other

Parameter #48

Name
IMGNUM
Parameter key
IMGNUM
Description

Image number

Caveats

Valid numbers: 1,2

Parameter type
Other

Parameter #49

Name
TBLNUM
Parameter key
TBLNUM
Description

Mode table in use

Parameter type
Other

Parameter #50

Name
NFRM
Parameter key
NFRM
Description

# frames summed for image

Parameter type
Other

Parameter #51

Name
NSPIN
Parameter key
NSPIN
Description

# spin pulse per image acquisition

Parameter type
Other

Parameter #52

Name
NFRMSUM
Parameter key
NFRMSUM
Description

# of frames to sum

Parameter type
Other

Parameter #53

Name
NIMAGE
Parameter key
NIMAGE
Description

# images every 4 major frames

Caveats

Valid numbers: 1,2

Parameter type
Other

Parameter #54

Name
NROWS
Parameter key
NROWS
Description

# detector rows per image

Parameter type
Other

Parameter #55

Name
STARTROW
Parameter key
STARTROW
Description

Starting detector row

Parameter type
Other

Parameter #56

Name
RESOLUTION
Parameter key
RESOLUTION
Description

# detector rows per line readout

Caveats

Valid numbers: 1,2,3

Parameter type
Other

Parameter #57

Name
PAD
Parameter key
PAD
Description

Structure padding

Parameter type
Other

Parameter #58

Name
PAD1
Parameter key
PAD1
Description

Structure padding

Parameter type
Other

Parameter #59

Name
INTEGTIME
Parameter key
INTEGTIME
Description

Integration time = msec/10

Parameter type
Other

Parameter #60

Name
SPINDELT
Parameter key
SPINDELT
Description

Delta time offset from spin pulse=msec/2

Parameter type
Other

Parameter #61

Name
MAJDELT
Parameter key
MAJDELT
Description

Delta time from top of major frame 1=msec/10

Parameter type
Other

Parameter #62

Name
SPINRATE
Parameter key
SPINRATE
Description

Spacecraft spin rate=msec/2

Parameter type
Other
↑

SPASE version 2.0.0

Instrument: Ultraviolet Imager (UVI)

Instrument ID
spase://SMWG/Instrument/POLAR/UVI Get XML
Name
Ultraviolet Imager (UVI)
Alternate name
UVI
Description

The ultraviolet imager is an ultraviolet imaging camera designed to obtain global images of the aurora at several selected wavelengths with a time resolution of 60 s, a spatial resolution of 10 km at a spacecraft altitude of 9 RE, and sensitivities of 100-300 rayleighs per count in each pixel. The objective is to provide coherent information on the total energy influx to the atmosphere, the characteristic energy of the precipitating particles, their spatial extent and structure, and various other parameters such as activity indices. This investigation utilizes two UV optical channels, one in the near ultraviolet (NUV) and one in the vacuum ultraviolet (VUV). The electronics subsystem is shared with the Visible Imaging System (VIS) investigation, as is the front-optics system used to point the instrument and to avoid the sunlit limb of the earth which is very bright in the visible. The combined instrument comprises primary and secondary optics, electromechanical devices for mirror and aperture control and filter selection, optical filters, image-intensified CCD sensor arrays with thermoelectric cooling, power converters and distribution circuits, and data, attitude and command processors. The instrument is mounted on the despun platform and normally directed in or near the nadir direction. The imaging field of view is directed by the earth-finding mirror to different sectors within the 20 x 36 degree instrument observing field. The VUV (vacuum ultraviolet) covers six wavelengths from 120.0 to 180.0 nm, and the NUV (near ultraviolet) covers five wavelengths from 247.0 to 337.1 nm.

Additional information
NSSDC's Master Catalog

Information about the Ultraviolet Imager (UVI) experiment on the Polar mission.

Contact
Role Person
1. Principal investigator Prof. George K. Parks Get XML
Release date
2009-05-20 21:10:13
Instrument type
Imager
Investigation name
Ultraviolet Imager (UVI) on Polar
Observatory
POLAR Get XML
↑

SPASE version 2.0.0

Observatory: POLAR

Observatory ID
spase://SMWG/Observatory/POLAR Get XML
Name
POLAR
Alternate name
Polar Plasma Laboratory
GGS/Polar
ISTP/Polar
Description

POLAR is one of four spacecraft in the Global Geospace Science (GGS) program. These are among the six spacecraft in the International Solar Terrestrial Physics (ISTP) program. POLAR provides multi-wavelength imaging of the aurora, measuring plasma entry into the polar magnetosphere and geomagnetic tail, the flow of plasmas to and from the ionosphere, and the deposition of particle energy in the ionosphere and upper atmosphere. POLAR has on-board propulsion systems and a design lifetime of three to five years, with redundant subsystems. POLAR is cylindrical, approximately 2.8 m in diameter by 1.25 m high (plus 1.25 m for its two despun platforms), with body-mounted solar cells, weighs 1250 kg and uses 333 W of power. The spin rate is 10 rpm around an axis approximately normal to the orbital plane. It has long wire spin-plane antennas, inertial booms, and spin-plane appendages to support sensors. POLAR has two despun gimbaled instrument platforms, and booms are deployed along both Z axes. Data are stored using on-board tape recorders and are relayed to the Deep Space Network at 600 kbps maximum (250 kbps nominal) although the average real-time data rate for POLAR is 41.6 kbps. POLAR has a 22.6-h polar orbit (90 deg inclination), with perigee and apogee of 11,500 and 57,000 km. Polar was launched to observe the polar magnetosphere and, as its orbit has precessed with time, has observed the equatorial inner magnetosphere and is now carrying out an extended period of southern hemisphere coverage. Details on the POLAR mission and instrumentation are provided in Space Science Reviews (Vol. 71, Nos. 1-4, 1995) and reprinted in The Global Geospace Mission, edited by C. T. Russell (Kluwer, 1995).

Additional information
NASA Polar Project

Web site of NASA Polar Mission, including overview, data products, FTP to the data, publications, educational outreach, orbits, instrument descriptions, contacts, news archive, and ISTP archive.

NSSDC's Master Catalog

Information about the Polar mission

Contact
Role Person
1. Project scientist Dr. John B. Sigwarth Get XML
Release date
2009-05-20 20:00:12
Prior ID
spase://vspo/observatory/67
Location
Region
Earth.Magnetosphere
Earth.Magnetosphere.Polar
Earth.Magnetosphere.RadiationBelt
↑

SPASE version 2.0.0

Person: Prof. George K. Parks

Name
Prof. George K. Parks
Organization
University of California
Person ID
spase://SMWG/Person/George.K.Parks Get XML
↑

SPASE version 2.0.0

Person: Peggy Sloan

Name
Peggy Sloan
Organization
National Space Science and Technology Center (NSSTC)
Person ID
spase://SMWG/Person/Peggy.Sloan Get XML
Release date
2009-07-24 01:35:44
↑

SPASE version 2.0.0

Person: Dr. Paul D. Craven

Name
Dr. Paul D. Craven
Organization
NASA Marshall Space Flight Center
Person ID
spase://SMWG/Person/Paul.D.Craven Get XML
↑

SPASE version 2.0.0

Person: Dr. Robert E. McGuire

Name
Dr. Robert E. McGuire
Organization
NASA Goddard Space Flight Center
Address
Code 672, Greenbelt, MD 20771, USA
Email
mcguire@mail630.gsfc.nasa.gov
Phone
1-301-286-7794
Person ID
spase://SMWG/Person/Robert.E.McGuire Get XML
Release date
2007-05-30 15:25:24
↑

SPASE version 2.0.0

Person: Dr. John B. Sigwarth

Name
Dr. John B. Sigwarth
Organization
NASA Goddard Space Flight Center
Address
NASA/GSFC, Code 674, Greenbelt, MD 20771
Email
pwg_project@nssdc.nasa.gov
Person ID
spase://SMWG/Person/John.B.Sigwarth Get XML
Release date
2007-12-04 23:11:21
↑

SPASE version 2.0.0

Repository: NSSTC POLAR UVI Repository

Repository ID
spase://SMWG/Repository/NSSTC/POLAR.UVI Get XML
Name
NSSTC POLAR UVI Repository
Description

Polar UVI Resident Archive web server and data archive located at the National Space Science and Technology Center (NSSTC) in Huntsville, Alabama.

Additional information
UVI Home Page

The Polar Ultraviolet Imager (UVI) Home Page contains links that describe the instrument, its operation, allow the user to view 36 second images and key parameter mosaics from the mission and download software, plus links to the UVI data archive, to lists of UVI publications and presentations, and several miscellaneous mission sites.

Contact
Role Person
1. Principal investigator Prof. George K. Parks Get XML
2. General contact Dr. Paul D. Craven Get XML
3. Metadata contact Peggy Sloan Get XML
Release date
2009-08-01 00:00:00
Access URL
UVI Data Archive

The UVI Data Archive contains UVI data and plot files including level-one (l1), orbit (or), attitude (at), and pitch angle (pa) CDF files, and the 36-second UVI Image gif files (gifs). The files are stored by year/doy-of-year in the subdirectories in parentheses. All of the CDFs are also available at the CDAWeb. The archive also contains the key parameter mosaic gif/png files and software.

↑

SPASE version 1.2.0

Repository: CDAWeb Data Repository FTP Interface

Repository ID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Get XML
Name
CDAWeb Data Repository FTP Interface
Description

Coordinated Data Analysis Web (CDAWeb) supports not only interactive plotting of variables from multiple instruments on multiple investigations simultaneously on arbitrary, user-defined time-scales. It also supports data retrieval in various formats using its interactive web interface or ftp service.

Additional information
CDAWeb Home Page

Coordinated Data Analysis Web (CDAWeb) home page at Space Physics Data Facility of the NASA Goddard Space Flight Center.

Contact
Role Person
1. Project scientist Dr. Robert E. McGuire Get XML
Release date
2008-08-26 21:14:34
Prior ID
spase://VMO/Repository/CDAWeb
↑