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SOHO (SOlar & Heliospheric Observatory) was launched in December 1995 and the mission is still ongoing. SOHO was designed to study the origins of the solar wind and the structure and dynamics of the solar interior. It moves around the Sun in step with Earth by slowly orbiting around the first Lagrangian point. The basic commands under this title can be used for all the data of SOHO instruments in FITS form (*.fits, *.fts).

Enter SOHO manual (holds basic commands for all instruments) here: SOHO

More information about SOHO: http://sohowww.nascom.nasa.gov/home.html


EIT (Extreme ultraviolet Imaging Telescope) provides full-disk images of the Sun at wavelengths 171, 195, 284 and 304 Ã…. The EIT can image for example active regions, prominences and coronal holes. EIT-data can be downloaded from http://umbra.nascom.nasa.gov/eit/eit-catalog.html. With SolarSoft it's easy to analyse the images and make movies and map images (enables difference images) of them.

Enter EIT manual (EIT specific commands) here: EIT

More inforamtion about EIT: http://umbra.nascom.nasa.gov/eit/


LASCO (Large Angle and Spectrometric COronagraph) instrument is a set of three coronagraph telescopes that will record white light images of the solar corona from 1.1 through 30 solar radii and spectral images from 1.1 to 3.0 solar radii. LASCO data can be downloaded from http://solar.to.astro.it/cgi-bin/gui_oato.cgi. With SolarSoft you can use LASCO data to produce, for example, map images, difference images and movies.

Enter LASCO manual (LASCO specific commands) here: LASCO

More information about LASCO: http://lasco-www.nrl.navy.mil/index.php



Yohkoh mission lasted 10 years (from August 1991 to December 2001) and provided valuable data about the Sun's corona and solar flares. Yohkoh data can be downloaded from http://surfwww.mssl.ucl.ac.uk/surf/data_request.html or ftp://umbra.nascom.nasa.gov/pub/yohkoh/online_archive. All data loaded (for different instruments) can be read by Yodat on SolarSoft.

Enter Yohkoh Manual (basic commands for alla instruments) here: Yohkoh

For more detailed information about Yohkoh's instruments, see YAG Instrument Guide http://www.lmsal.com/solarsoft/sswdoc/guides/yag/iguide_top.html.



SXT (Soft X-ray Telescope) provides both full (prefix sfr) and partial (spr) frame images. Displaying images and making movies is easy with SolarSoft's Stepper. Also light curves (counts/s vs. time) can be made by the data of the images.

Enter SXT Manual (SXT specific commands) here: SXT, basic commands here: Yohkoh


HXT (Hard X-ray Telescope) data (prefix hda) can be used to produce ligh curves from four different energy bands. Some more advanced operations are the spectral analysis and determining the flare location on the Sun.

Enter HXT Manual (HXT specific commands) here: HXT, basic commands here: Yohkoh


BCS (Bragg Crystal Spectrometer) data (prefix bda) is mainly used to plot light curves and spectra. Also spectral movies and 2-D plots against time are possible to do.

Enter BCS Manual (BCS specific commands) here: BCS, basic commands here: Yohkoh


WBS (Wide Band Spectrometer) data (prefix wda) can also be used to plot different kind of light curves and spectra.

Enter WBS Manual (WBS specific commands) here: WBS, basic commands here: Yohkoh


Hinode is the successor of Yohkoh and was launched in September 2006. On board Hinode there are instruments: Solar Optical Telescope (SOT), X-Ray Telescope (XRT) and EUV Imaging Spectroscope (EIS). Hinode data can be downloaded from http://msslxr.mssl.ucl.ac.uk:8080/SolarB/SearchArchive.jsp and http://msslxr.mssl.ucl.ac.uk:8080/SolarB/SearchXRT.jsp.

Enter Hinode Manual here: Hinode

More information about Hinode: http://solar-b.nao.ac.jp/index_e.shtml and http://msslxr.mssl.ucl.ac.uk:8080/SolarB/Solar-B.jsp



RHESSI spacecraft is revolving Earth at low-altitude equatorial orbit and it's pointing at the Sun center. The only instrument on board is an imaging spectrometer with the ability to obtain high resolution color movies of solar flares in X-rays and gamma rays. Observations from ground-based observatories (radio and optical) provide complementary data and are thereby integral parts of the HESSI mission. RHESSI data can be downloaded from http://hesperia.gsfc.nasa.gov/getfiles/rhessi_data_search.html. Widget-based Rhessi Analysis Software is a part of SolarSoft. With the software you can produce high resolution images (and movies ?) and spectra. Also locating flares can be done. Like all widget-based softwares also RHESSI Graphical User Interface (GUI) is easy to use but it still is a good tool for making light curves and images. RHESSi data can also be analyzed by commands on terminal, which may please the advanced users.

Enter Rhessi Manual here: RHESSI

More information about RHESSI mission at: http://hesperia.gsfc.nasa.gov/hessi/


Transition Region And Coronal Explorer (TRACE) images the solar corona and transition region at high angular and temporal resolution. It was launched in April 1998. Trace observes the Sun at multiple wavelengths between 260 and 6000 Ã…. TRACE data can be downloaded from TRACE Data Center http://trace.lmsal.com/trace_cat.html or via Virtaul Solar Observatory http://sdac.virtualsolar.org/cgi-bin/search.

Enter TRACE Manual here: TRACE

More information about TRACE: http://trace.lmsal.com/

ETH Zurich

ETH Zurich's Phoenix 2 is extremely broadband spectrometer that observes solar flare radio emissions. The frequency range of the observation is about 50-4000 MHz. SolarSoft can be used to read Phoenix data in FITS files. Phoenix data is downloaded automatically.

Enter ETH Zurich Manual here: ETH Zurich

More information about ETH Zurich and Phoenix: http://www.astro.phys.ethz.ch/rapp/rapp_home.html


WIND spacecraft was launched in November 1994 and it's still in use. The WAVES instrument obtains information about the properties of the radio waves in the interplanetary plasma. Some main measurements are focused on electron thermal noise from 4 kHz to 256 kHz (TNR) and radio waves from 20 kHz to 14 MHz (RAD1 and RAD2). WAVES-data can be downloaded from http://lep694.gsfc.nasa.gov/waves/waves.html. With SolarSoft you can plot the data in the time-frequency coordinates.

Enter Wind WAVES Manual here: WAVES

More information about WIND spacecraft: http://www-istp.gsfc.nasa.gov/istp/wind/


Created by mevali. Last Modification: Tuesday 31 of July, 2007 10:11:02 UTC by mevali.