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CALLISTO Quicklook Solar Spectrogram Plots

(2023). CALLISTO Quicklook Solar Spectrogram Plots [Data set]. International Space Weather Initiative (ISWI). https://doi.org/10.48322/wy0b-tq35 (CiteAs link). Accessed on .

ResourceID
spase://ISWI/DisplayData/Callisto/FAS/PT15M

Description

This dataset contains solar dynamic spectrogram PNG plots of the Callisto spectrometer data from the e-Callisto network of stations. Each plot spans 15 minutes. The naming convention for each file is of the form: STATION_YYYYMMDD_HHMMSS_CODE.fit.gz.png where STATION is a variable length station name and following the Date (YYYYMMDD) and UT time (HHMMSS) CODE is a two digit number that is an individual description of the front-end of the system.

From the website http://e-callisto.org - The CALLISTO spectrometer is a programmable heterodyne receiver built in the framework of IHY2007 and ISWI by former Radio and Plasma Physics Group (PI Christian Monstein) at ETH Zurich, Switzerland. The main applications are observation of solar radio bursts and rfi-monitoring for astronomical science, education and outreach. The instrument natively operates between 45 and 870 MHz using a modern, commercially available broadband cable-TV tuner CD1316 having a frequency resolution of 62.5 KHz. Callisto in addition is dedicated to do radio-monitoring within its frequency range with 13,200 channels per spectrum. The frequency range can be expanded to any range by switching-in a heterodyne up- or a down-converter. The data obtained from CALLISTO are FITS-files with up to 400 frequencies per sweep. The data are transferred via a RS-232 cable to a computer and saved locally. Time resolution is 0.25 sec at 200 channels per spectrum (800 pixels per second). The integration time is 1 msec and the radiometric bandwidth is about 300 KHz. The overall dynamic range is larger than 50 dB. For convenient data handling several IDL- and Python-routines were written.

Many CALLISTO instruments have been deployed. A complete list of stations is available from the website, please see the InformationURL included below for a link to the PDF file. Through the IHY/UNBSSI and ISWI instrument deployment program, CALLISTO is able to continuously observe the solar radio spectrum for 24h per day all year. All Callisto spectrometers together form the e-Callisto network. Instrument deployment including education and training of observers was financially supported by SNF, SSAA, NASA, Institute for Astronomy and North-South Center of ETH Zurich and a few private sponsors.

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Details

Version:2.5.0

DisplayData

ResourceID
spase://ISWI/DisplayData/Callisto/FAS/PT15M
ResourceHeader
ResourceName
CALLISTO Quicklook Solar Spectrogram Plots
AlternateName
Callisto Frequency-Agile Spectrometer Quicklook Plots
DOI
https://doi.org/10.48322/wy0b-tq35
ReleaseDate
2023-07-06 16:59:38Z
RevisionHistory
RevisionEvent
ReleaseDate
2023-04-09 16:59:38.000
Note
Added DOI and PublicationInfo, Update URLs, Added to RevisionHistory, Added SpatialCoverage. SpatialCoverage not ideal. JMW
RevisionEvent
ReleaseDate
2023-06-29 15:13:44
Note
Updated the Acknowledgement
Description

This dataset contains solar dynamic spectrogram PNG plots of the Callisto spectrometer data from the e-Callisto network of stations. Each plot spans 15 minutes. The naming convention for each file is of the form: STATION_YYYYMMDD_HHMMSS_CODE.fit.gz.png where STATION is a variable length station name and following the Date (YYYYMMDD) and UT time (HHMMSS) CODE is a two digit number that is an individual description of the front-end of the system.

From the website http://e-callisto.org - The CALLISTO spectrometer is a programmable heterodyne receiver built in the framework of IHY2007 and ISWI by former Radio and Plasma Physics Group (PI Christian Monstein) at ETH Zurich, Switzerland. The main applications are observation of solar radio bursts and rfi-monitoring for astronomical science, education and outreach. The instrument natively operates between 45 and 870 MHz using a modern, commercially available broadband cable-TV tuner CD1316 having a frequency resolution of 62.5 KHz. Callisto in addition is dedicated to do radio-monitoring within its frequency range with 13,200 channels per spectrum. The frequency range can be expanded to any range by switching-in a heterodyne up- or a down-converter. The data obtained from CALLISTO are FITS-files with up to 400 frequencies per sweep. The data are transferred via a RS-232 cable to a computer and saved locally. Time resolution is 0.25 sec at 200 channels per spectrum (800 pixels per second). The integration time is 1 msec and the radiometric bandwidth is about 300 KHz. The overall dynamic range is larger than 50 dB. For convenient data handling several IDL- and Python-routines were written.

Many CALLISTO instruments have been deployed. A complete list of stations is available from the website, please see the InformationURL included below for a link to the PDF file. Through the IHY/UNBSSI and ISWI instrument deployment program, CALLISTO is able to continuously observe the solar radio spectrum for 24h per day all year. All Callisto spectrometers together form the e-Callisto network. Instrument deployment including education and training of observers was financially supported by SNF, SSAA, NASA, Institute for Astronomy and North-South Center of ETH Zurich and a few private sponsors.

Acknowledgement
Please acknowledge Fachhochschule Nordwestschweiz (FHNW) Campus Brugg/Windisch and Istituto Ricerche Solari (IRSOL) Locarno, Switzerland.
PublicationInfo
Authors
Monstein, C., Csillaghy, A., and Benz, A. O.
PublicationDate
2023-01-01 00:00:00
PublishedBy
International Space Weather Initiative (ISWI)
Contacts
RolePersonStartDateStopDateNote
1.PrincipalInvestigatorspase://SMWG/Person/Christian.Monstein
2.MetadataContactspase://SMWG/Person/Leonard.N.Garcia
3.MetadataContactspase://SMWG/Person/James.M.Weygand
InformationURL
Name
e-Callisto International Network of Solar Radio Spectrometers
URL
Language
en
InformationURL
Name
List of e-Callisto member stations and their operating status
URL
Language
en
Association
AssociationID
AssociationType
DerivedFrom
PriorIDs
spase://VWO/DisplayData/Callisto/FAS.PT15M
spase://VSPO/DisplayData/Callisto/FAS/PT15M
spase://GBO/DisplayData/Callisto/FAS/PT15M
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
Callisto Quicklook Plots
URL
Description

Access to a directory tree (ordered by year/month/day) of PNG format plots for the Callisto network. Within the same directory are the corresponding FITS data files.

Language
en
Format
PNG
Encoding
None
Acknowledgement
Please acknowledge Fachhochschule Nordwestschweiz (FHNW) Campus Brugg/Windisch and Istituto Ricerche Solari (IRSOL) Locarno, Switzerland.
InstrumentIDs
MeasurementType
Waves.Passive
MeasurementType
Spectrum
TemporalDescription
TimeSpan
StartDate
1999-01-05 13:32:23Z
RelativeStopDate
-P1D
DisplayCadence
PT15M
ObservedRegion
Sun
ObservedRegion
Heliosphere.Inner
SpatialCoverage
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HSM
Acknowledgement
Please acknowledge Fachhochschule Nordwestschweiz (FHNW) Campus Brugg/Windisch and Istituto Ricerche Solari (IRSOL) Locarno, Switzerland.
Description

The archive of IKARUS, PHOENIX, PHOENIX-2, PHOENIX-3, PHOENIX-4, AOS, Argos and e-Callisto spectra (>2002).

Keywords
Dynamic Spectrogram
Spectrogram