The table below describes the operation of each element of the helioviewer, as enumerated on this screenshot. main elements of the helioviewer
1. Time selector

Time selector
Allows simple navigation in time.

Date: can be selected by clicking on the calendar icon (Calendar icon) and using the pop-up calendar window. Also, a new date can be entered manually in yyyy/mm/dd format in the dialog box. On clicking return, the viewer window is updated with data closest to the new date/time.
Time: enter a time in hh:mm:ss format. On clicking return, the viewer window is updated with data closest to the new date/time.
Time-step: Pick a time-step from a drop down menu. On clicking the left and right arrows the observation date/time changes by the time-step and the viewer window is updated with data closest to the new date/time.

latest: the viewer window is updated with data closest to the current time.

2. Image selector

Data selector
(a) Regular


Data selector
(b) Opened
Add, change and overlay images.

Add +: pops up a new "opened" window underneath the current overlay list allowing the selection of new images.
Open/close overlay : open/close toggle for the instrument + measurement image layer shown.
Toggle visibility icon : toggle visibility of the given instrument + measurement image layer.
Close element : remove the image layer from the viewer window.
Opacity : dynamically vary the opacity of the image layer in the viewer window.
Observatory : select an observatory.
Instrument : select an instrument operates at the selected observatory.
Detector : select a detector that is part of the selected instrument.
Measurement : select a measurement made by the selected detector.
Download grey-scale JPEG2000 file : download the full grey-scale JPEG2000 file corresponding to this image.
Open header information window : show the FITS and Helioviewer Project header information for this image layer.

The observation time is color-coded: green/italic indicates that the data was observed close to the requested date/time, yellow/bold indicates that the time difference between the data and the requested date/time is a little bit larger. Red indicates that the time difference between the requested date/time and the data is very large.

3. Zoom Tool

Zoom tool

Allows zooming in/out and recentering of data in the viewer window.

center : re-center the field of view by moving the center of the Sun to the center of the viewer window.
+ : zoom in. Zooming in can also be done by moving the bar closer to the '+'.
- : zoom out. Zooming out can also be done by moving the bar closer to the '-'.

4. Viewer window

Viewer window

Display the selected images.

This part of the web page is used to display the selected images. The view can be dragged around inside the viewer window by clicking in the viewer window, holding down the click, and dragging the mouse.

5. Usage Links

Helioviewer links

Links on how to use the Helioviewer

User Guide: the Helioviewer User Guide (this page).
Glossary: a visual glossary of solar and heliospheric related features, events, science, missions and instruments.
Usage tips: Keyboard and mouse shortcuts are shown.

6. Movie

Movie button
(a) Open the movie dialog.


Area selection and previous movie history
(b) Area selection and movie history.


Movie settings dialog
(c) Movie settings dialog.


Advanced movie settings
(d) Advanced movie settings.


Help for movie settings
(e) Help for movie settings.


In browser movie player
(f) In-browser movie player.

Create a movie, download it, upload it YouTube, share it via social media networks.

(a) Open the movie dialog.

(b) Movie options.

Full viewport : make a movie using the full viewport.

Select Area : make a movie of a selected area in the current viewport.

A list of movies made (or in progress) is also shown, ordered by when they were made. The list can be cleared using the Clear History button. Pointing the mouse over the movie titles pops up a short description of the movie and a thumbnail image. Clicking on the movie title brings up an in-browser movie player.

(c) Movie settings dialog.

Choose the duration of the movie. The movie is centered on the time given in the time-selector with the chosen duration. Advanced settings (Advanced movie settings, d) and help (Open the help dialog for movies, e) also available.

(d) Advanced movie settings.

Change parameters of the movie. The movie frame rate can be changed, and since the maximum number of frames is fixed, the duration of the movie can be changed by this. Alternatively, you can set the duration of the movie, which fixes the frame rate.

(e) Help for movie settings.

A help dialog for the Advanced movie settings.


(f) In-browser movie player.

Download movie button : download a high quality version of the movie.

Upload movie to YouTube : upload movie to YouTube. If you are not already logged in to YouTube, you will be asked to log in. On logging in to YouTube, www.helioviewer.org provides a short form that has been pre-filled with information about the movie. You have the option to share it with other users of www.helioviewer.org. If you choose to share it, a link to the movie will eventually appear in the "Movies uploaded to YouTube from Helioviewer.org" on http://www.helioviewer.org.

Link to movie : provides a link to the movie. Pasting this link in a browser will point it to www.helioviewer.org and launch the movie player, and start playing the movie.

Share movie via social media : enables you to share the movie over many different social media networks and websites.

7. Screenshot

Open screenshot dialog
(a) Open the screenshot dialog.


Area selection and screenshot history
(b) Area selection and screenshot history.

Takes a screenshot of the current contents of the viewer window.

(a) Open the screenshot dialog.

(b) Screenshot options.
Full viewport : take a screenshot of the full viewport.
Select Area : take a screenshot of a selected area in the current viewport.
A list of screenshots made is also shown, ordered by when they were made. The list can be cleared using the Clear button. Pointing the mouse over the screenshot titles pops up a short description of the screenshot and a thumbnail image. Clicking on the screenshot title creates and downloads the screenshot.

8. Full screen toggle

Full screen toggle

Full screen toggle

Clicking this toggles the viewer window from the regular view (shown above) to a full screen view where the viewer window expands to take up the entire webpage. The elements 1, 2, 12 and 13 are slid off screen. The regular view can be returned by pressing the toggle again.