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IBEX High Energy Neutral Atom Imager (Hi) Data Release 18, Compton-Getting corrected, Survival Probability corrected, ANTIRAM Lower Ribbon separated ENA Maps, Level H3, one-year Data

David J. McComas (2026). IBEX High Energy Neutral Atom Imager (Hi) Data Release 18, Compton-Getting corrected, Survival Probability corrected, ANTIRAM Lower Ribbon separated ENA Maps, Level H3, one-year Data [Dataset]. Space Physics Data Facility. https://doi.org/10.48322/343d-4626 .

Note: Proper references, including those in BibTex or other formats , should include the "Accessed on date" as shown above to identify the version of the resource being cited in a given publication.

ResourceID
spase://NASA/NumericalData/IBEX/Hi/H3/Release18/CG/SP/Antiram/Lower/Ribbon/P1Y

Description

IBEX-Hi Release 18 one-year ANTIRAM hydrogen ENA maps for the lower Ribbon separated-map product from the Release 18 Ribbon/GDF separation. Compton-Getting correction has been applied to account for spacecraft motion, and survival-probability correction has been applied to account for ENA losses during transport and to scale fluxes from the IBEX observing location near 1 AU to approximately 100 AU. The data cover 2009 through 2022, with measurement intervals spanning 2008-12-25 through 2022-12-26, on a 60 by 30 Solar Ecliptic longitude-latitude grid for IBEX-Hi energy channels 2-6. The channel 2-6 FWHM energy ranges are 0.52-0.95, 0.84-1.55, 1.36-2.50, 1.99-3.75, and 3.13-6.00 keV; the nominal energies are 0.71, 1.11, 1.74, 2.73, and 4.29 keV. The source metadata identifies this as the lower Ribbon separated-map variant. The CDF variables described by this record include coordinate/time support arrays and total exposure-time maps for channels 2-6, including virtual CDAWeb alternate views. The CDAWeb ProductKey is IBEX_H3_ENA_HI_R18_CG_SP_ANTIRAM_LOWER_RIBBON_1YR.

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Details

Version:2.7.2

MetadataRightsList

Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions

Version:2.7.2

NumericalData

ResourceID
spase://NASA/NumericalData/IBEX/Hi/H3/Release18/CG/SP/Antiram/Lower/Ribbon/P1Y
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
IBEX High Energy Neutral Atom Imager (Hi) Data Release 18, Compton-Getting corrected, Survival Probability corrected, ANTIRAM Lower Ribbon separated ENA Maps, Level H3, one-year Data
AlternateName
IBEX_H3_ENA_HI_R18_CG_SP_ANTIRAM_LOWER_RIBBON_1YR
DOI
https://doi.org/10.48322/343d-4626
ReleaseDate
2026-10-03 19:00:07Z
RevisionHistory
RevisionEvent
ReleaseDate
2025-07-07 12:34:56.789Z
Note
Initial release of metadata, ADAPT generated, LFB
RevisionEvent
ReleaseDate
2026-09-24 12:34:56.789Z
Note
Curated and validated against SPASE 2.7.2, OK
RevisionEvent
ReleaseDate
2026-10-03 19:00:07Z
Note
Changed http to https in top-level schemaLocation attribute. Added PublicationInfo and DOI. tlk
Description

IBEX-Hi Release 18 one-year ANTIRAM hydrogen ENA maps for the lower Ribbon separated-map product from the Release 18 Ribbon/GDF separation. Compton-Getting correction has been applied to account for spacecraft motion, and survival-probability correction has been applied to account for ENA losses during transport and to scale fluxes from the IBEX observing location near 1 AU to approximately 100 AU. The data cover 2009 through 2022, with measurement intervals spanning 2008-12-25 through 2022-12-26, on a 60 by 30 Solar Ecliptic longitude-latitude grid for IBEX-Hi energy channels 2-6. The channel 2-6 FWHM energy ranges are 0.52-0.95, 0.84-1.55, 1.36-2.50, 1.99-3.75, and 3.13-6.00 keV; the nominal energies are 0.71, 1.11, 1.74, 2.73, and 4.29 keV. The source metadata identifies this as the lower Ribbon separated-map variant. The CDF variables described by this record include coordinate/time support arrays and total exposure-time maps for channels 2-6, including virtual CDAWeb alternate views. The CDAWeb ProductKey is IBEX_H3_ENA_HI_R18_CG_SP_ANTIRAM_LOWER_RIBBON_1YR.

Acknowledgement
Please acknowledge the IBEX Mission Principal Investigator, Dr. David J. McComas, the IBEX data providers, and NASA/GSFC SPDF/CDAWeb when using these data.
PublicationInfo
Authors
David J. McComas
PublicationDate
2026-10-03 15:17:59.000Z
PublishedBy
Space Physics Data Facility
Contacts
Role Person StartDate StopDate Note
1. PrincipalInvestigator spase://SMWG/Person/David.J.McComas
InformationURL
Name
IBEX The Interstellar Boundary Explorer mission
URL
https://ibex.princeton.edu/
Description

IBEX Mission, Instrument, and Data Release Descriptions

Language
en
InformationURL
Name
IBEX Data Release 18
URL
https://ibex.princeton.edu/DataRelease18
Description

IBEX Data Release 18 information, data structure, and naming conventions

Language
en
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/ibex/cdf/h3/release18/ena_hi_cg_sp_antiram_lower_ribbon_1yr/
Description

Access to Data in CDF Format via ftps from SPDF

AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/ibex/cdf/h3/release18/ena_hi_cg_sp_antiram_lower_ribbon_1yr/
Description

Access to Data in CDF Format via https from SPDF

AccessURL
Name
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=IBEX_H3_ENA_HI_R18_CG_SP_ANTIRAM_LOWER_RIBBON_1YR&index=sp_phys
ProductKey
IBEX_H3_ENA_HI_R18_CG_SP_ANTIRAM_LOWER_RIBBON_1YR
Description

Access to ASCII, CDF, and plots via NASA/GSFC CDAWeb

Format
CDF
Encoding
None
Acknowledgement
Please acknowledge the Principal Investigator D.J. McComas, the IBEX data providers, and NASA/GSFC SPDF/CDAWeb when using these data.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
CDAWeb HAPI Server
URL
https://cdaweb.gsfc.nasa.gov/hapi
Style
HAPI
ProductKey
IBEX_H3_ENA_HI_R18_CG_SP_ANTIRAM_LOWER_RIBBON_1YR
Description

Web service access to this product using the HAPI interface.

Format
CSV
Acknowledgement
Please acknowledge the Principal Investigator D.J. McComas, the IBEX data providers, and NASA/GSFC SPDF/CDAWeb when using these data.
ProcessingLevel
Calibrated
InstrumentIDs
spase://SMWG/Instrument/IBEX/Hi
MeasurementType
NeutralAtomImages
TemporalDescription
TimeSpan
StartDate
2008-12-25 00:00:00.000Z
StopDate
2022-12-26 00:00:00.000Z
Cadence
P1Y
ObservedRegion
Interstellar
Caveats
Survival-probability correction has been applied to scale ENA fluxes from the IBEX observing location near 1 AU to approximately 100 AU, and Compton-Getting correction for spacecraft motion has been applied. This resource contains the lower Ribbon component from the Release 18 Ribbon/GDF separation. The lower, median, and upper products represent separation bounds rather than formal confidence intervals.
Parameter #1
Name
Epoch Start Time
ParameterKey
Epoch
Description

CDF epoch time for the start of each one-year measurement interval.

Cadence
P1Y
Units
day-month-year hour:minute:second
RenderingHints
AxisLabel
Epoch
ValueFormat
CDF EPOCH TIME
ScaleType
LinearScale
ValidMin
1990-01-01T00:00:00.000Z
ValidMax
2029-12-31T23:59:59.999Z
FillValue
9999-12-31T23:59:59.999Z
Support
SupportQuantity
Temporal
Parameter #2
Name
Epoch Stop Time
ParameterKey
Epoch2
Description

CDF epoch time for the end of each one-year measurement interval.

Cadence
P1Y
Units
day-month-year hour:minute:second
RenderingHints
AxisLabel
Epoch2
ValueFormat
CDF EPOCH TIME
ScaleType
LinearScale
ValidMin
1990-01-01T00:00:00.000Z
ValidMax
2029-12-31T23:59:59.999Z
FillValue
9999-12-31T23:59:59.999Z
Support
SupportQuantity
Temporal
Parameter #3
Name
Starting Map Number
Set
Time series defined by using: Epoch
ParameterKey
mapnum
Description

Starting six-month IBEX map number used to define each one-year map or average.

Cadence
P1Y
Units
#
RenderingHints
DisplayType
TimeSeries
AxisLabel
Starting Map Number
ValueFormat
I5
ScaleType
LinearScale
ValidMin
0
ValidMax
65534
FillValue
65535
Support
SupportQuantity
Other
Parameter #4
Name
Solar Ecliptic Latitude Bin Number
ParameterKey
latitude_bin
Description

Solar Ecliptic latitude bin number for the 30-bin, six-degree full-sky map grid.

Units
#
RenderingHints
AxisLabel
#
ValueFormat
I5
ScaleType
LinearScale
Structure
Size
30
ValidMin
1
ValidMax
30
FillValue
65534
Support
SupportQuantity
Other
Parameter #5
Name
Solar West Ecliptic Longitude Bin Number
ParameterKey
longitude_bin
Description

Solar West Ecliptic longitude bin number for the 60-bin, six-degree full-sky map grid.

Units
#
RenderingHints
AxisLabel
#
ValueFormat
I5
ScaleType
LinearScale
Structure
Size
60
ValidMin
1
ValidMax
60
FillValue
65535
Support
SupportQuantity
Other
Parameter #6
Name
Solar Ecliptic Latitude
ParameterKey
Latitude
Description

Solar Ecliptic latitude at the center of each six-degree map bin.

Units
°
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
SE
RenderingHints
AxisLabel
SE Latitude
ValueFormat
F6.0
ScaleType
LinearScale
Structure
Size
30
ValidMin
-90
ValidMax
90
FillValue
-1.0e+31
Support
SupportQuantity
Positional
Parameter #7
Name
Solar West Ecliptic Longitude
ParameterKey
West_Longitude
Description

Solar West Ecliptic longitude at the center of each six-degree map bin.

Units
°
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
SE
RenderingHints
AxisLabel
SWE Longitude
ValueFormat
F6.0
ScaleType
LinearScale
Structure
Size
60
ValidMin
0
ValidMax
360
FillValue
-1.0e+31
Support
SupportQuantity
Positional
Parameter #8
Name
Solar East Ecliptic Longitude
ParameterKey
East_Longitude
Description

Solar East Ecliptic longitude corresponding to the Solar West Ecliptic longitude map grid.

Units
°
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
SE
RenderingHints
AxisLabel
SEE Longitude
ValueFormat
F6.0
ScaleType
LinearScale
Structure
Size
60
ValidMin
0
ValidMax
360
FillValue
-1.0e+31
Support
SupportQuantity
Positional
Parameter #9
Name
Starting Orbit Number
Set
Time series defined by using: Epoch
ParameterKey
orbit1
Description

Starting IBEX orbit or arc associated with each one-year measurement interval.

Cadence
P1Y
Units
#
RenderingHints
AxisLabel
Starting Orbit
ValueFormat
I5
ScaleType
LinearScale
ValidMin
0
ValidMax
65534
FillValue
65535
Support
SupportQuantity
Other
Parameter #10
Name
Ending Orbit Number
Set
Time series defined by using: Epoch
ParameterKey
orbit2
Description

Ending IBEX orbit or arc associated with each one-year measurement interval.

Cadence
P1Y
Units
#
RenderingHints
AxisLabel
Ending Orbit
ValueFormat
I5
ScaleType
LinearScale
ValidMin
0
ValidMax
65534
FillValue
65535
Support
SupportQuantity
Other
Parameter #11
Name
Total Exposure Time, IBEX-Hi Energy Channel 2, approximately 0.71 keV
Set
One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude.
ParameterKey
Fexp2
Description

Total exposure time for the one-year lower Ribbon separated map, IBEX-Hi energy channel 2, FWHM range 0.52-0.95 keV.

Cadence
P1Y
Units
s
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
SE
RenderingHints
AxisLabel
Exposure Time
ValueFormat
E11.3
ScaleType
LinearScale
Structure
Size
60 30
FillValue
-1.0e+31
Support
SupportQuantity
Temporal
Parameter #12
Name
Total Exposure Time Alternate View, IBEX-Hi Energy Channel 2, approximately 0.71 keV
Set
One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude.
ParameterKey
Fexp2_plasma
Description

Virtual CDAWeb X/Y alternate view of Fexp2; it represents the same total exposure-time map for the lower Ribbon separated product.

Cadence
P1Y
Units
s
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
SE
RenderingHints
AxisLabel
Exposure Time
ValueFormat
E11.3
ScaleType
LinearScale
Structure
Size
60 30
FillValue
-1.0e+31
Support
SupportQuantity
Temporal
Parameter #13
Name
Total Exposure Time, IBEX-Hi Energy Channel 3, approximately 1.11 keV
Set
One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude.
ParameterKey
Fexp3
Description

Total exposure time for the one-year lower Ribbon separated map, IBEX-Hi energy channel 3, FWHM range 0.84-1.55 keV.

Cadence
P1Y
Units
s
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
SE
RenderingHints
AxisLabel
Exposure Time
ValueFormat
E11.3
ScaleType
LinearScale
Structure
Size
60 30
FillValue
-1.0e+31
Support
SupportQuantity
Temporal
Parameter #14
Name
Total Exposure Time Alternate View, IBEX-Hi Energy Channel 3, approximately 1.11 keV
Set
One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude.
ParameterKey
Fexp3_plasma
Description

Virtual CDAWeb X/Y alternate view of Fexp3; it represents the same total exposure-time map for the lower Ribbon separated product.

Cadence
P1Y
Units
s
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
SE
RenderingHints
AxisLabel
Exposure Time
ValueFormat
E11.3
ScaleType
LinearScale
Structure
Size
60 30
FillValue
-1.0e+31
Support
SupportQuantity
Temporal
Parameter #15
Name
Total Exposure Time, IBEX-Hi Energy Channel 4, approximately 1.74 keV
Set
One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude.
ParameterKey
Fexp4
Description

Total exposure time for the one-year lower Ribbon separated map, IBEX-Hi energy channel 4, FWHM range 1.36-2.50 keV.

Cadence
P1Y
Units
s
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
SE
RenderingHints
AxisLabel
Exposure Time
ValueFormat
E11.3
ScaleType
LinearScale
Structure
Size
60 30
FillValue
-1.0e+31
Support
SupportQuantity
Temporal
Parameter #16
Name
Total Exposure Time Alternate View, IBEX-Hi Energy Channel 4, approximately 1.74 keV
Set
One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude.
ParameterKey
Fexp4_plasma
Description

Virtual CDAWeb X/Y alternate view of Fexp4; it represents the same total exposure-time map for the lower Ribbon separated product.

Cadence
P1Y
Units
s
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
SE
RenderingHints
AxisLabel
Exposure Time
ValueFormat
E11.3
ScaleType
LinearScale
Structure
Size
60 30
FillValue
-1.0e+31
Support
SupportQuantity
Temporal
Parameter #17
Name
Total Exposure Time, IBEX-Hi Energy Channel 5, approximately 2.73 keV
Set
One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude.
ParameterKey
Fexp5
Description

Total exposure time for the one-year lower Ribbon separated map, IBEX-Hi energy channel 5, FWHM range 1.99-3.75 keV.

Cadence
P1Y
Units
s
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
SE
RenderingHints
AxisLabel
Exposure Time
ValueFormat
E11.3
ScaleType
LinearScale
Structure
Size
60 30
FillValue
-1.0e+31
Support
SupportQuantity
Temporal
Parameter #18
Name
Total Exposure Time Alternate View, IBEX-Hi Energy Channel 5, approximately 2.73 keV
Set
One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude.
ParameterKey
Fexp5_plasma
Description

Virtual CDAWeb X/Y alternate view of Fexp5; it represents the same total exposure-time map for the lower Ribbon separated product.

Cadence
P1Y
Units
s
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
SE
RenderingHints
AxisLabel
Exposure Time
ValueFormat
E11.3
ScaleType
LinearScale
Structure
Size
60 30
FillValue
-1.0e+31
Support
SupportQuantity
Temporal
Parameter #19
Name
Total Exposure Time, IBEX-Hi Energy Channel 6, approximately 4.29 keV
Set
One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude.
ParameterKey
Fexp6
Description

Total exposure time for the one-year lower Ribbon separated map, IBEX-Hi energy channel 6, FWHM range 3.13-6.00 keV.

Cadence
P1Y
Units
s
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
SE
RenderingHints
AxisLabel
Exposure Time
ValueFormat
E11.3
ScaleType
LinearScale
Structure
Size
60 30
FillValue
-1.0e+31
Support
SupportQuantity
Temporal
Parameter #20
Name
Total Exposure Time Alternate View, IBEX-Hi Energy Channel 6, approximately 4.29 keV
Set
One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude.
ParameterKey
Fexp6_plasma
Description

Virtual CDAWeb X/Y alternate view of Fexp6; it represents the same total exposure-time map for the lower Ribbon separated product.

Cadence
P1Y
Units
s
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
SE
RenderingHints
AxisLabel
Exposure Time
ValueFormat
E11.3
ScaleType
LinearScale
Structure
Size
60 30
FillValue
-1.0e+31
Support
SupportQuantity
Temporal