Archive for category General
The Helioviewer Project maintains a set of public APIs with the goal of improving access to solar and
heliospheric datasets to scientists, educators, developers, and the general public. Helioviewer.org and JHelioviewer are two client applications that make use of the Helioviewer API. You can build your own. The API is fully described at our API documentation page. Examples of usage are also provided.
For easy access to API responses within your code, check out the open-source libraries available at Unirest.io. Libraries are provided for integration with Python, PHP, Java, Ruby, Objective-C, Node.js, .NET, and Windows 8 code bases.
The API is also available via Mashape – check it out here.
The combination of our API documentation page and the Unirest.io libraries puts solar and heliospheric image data in your hands so you can develop your own applications. If you have any questions regarding usage of the API, please send us an email at firstname.lastname@example.org.
The Helioviewer Project is now on Twitter, @Helioviewer.
Please follow us on Twitter for the latest solar and heliospheric news and movies, as well as new Helioviewer Project features.
Yesterday, many users posted movies of the first X-class flare of 2014:
– from Youtube user otraLoly
– from Youtube user Jorge Armando Cazares
As a result of this flare and the accompanying coronal mass ejection, the
Space Weather Prediction Center of the National Oceanic and Atmospheric Administration (NOAA) are anticipating strong Geomagnetic Storm conditions to occur on January 9 and 10.
The high level of radiation due to this eruptive event also led to the scrubbing of a resupply mission to the International Space Station (ISS).
Thanks again to our users for sharing their movies!
Comet ISON will shortly appear in images from our suite of Sun-watching instruments available via the Helioviewer Project. It has already been seen in images from the Heliospheric Imager onboard STEREO.
Comet ISON will first appear in LASCO C3 at 02:00 UT on Wednesday 27th November, and will appear in the LASCO C2 field-of-view at 13:00 UT on Thursday 28th November.
The comet will exit the LASCO C2 field of view at C2 field-of-view at 23:00 UT on Thursday November 28, and the C3 field-of-view at 23:00 UT on Friday, 29th November.
Comet ISON will also move in to the SDO field of view. SDO is taking special observations of the passage of the comet in order to learn more about what happens to a comet so close to the Sun. You’ll be able to see some of the latest available images from SDO at http://cometison.gsfc.nasa.gov/#.
Please note that images will not be available precisely the times mentioned here since it takes time for the data to be downloaded from their spacecraft and processed on the ground. We will endeavor to ensure that all out users will be able to see this rare event
Full Helioviewer Project services originating at NASA – helioviewer.org, JHelioviewer and the Helioviewer API – are now back up and running. Over the next couple of days we will be backfilling in missing data from the period October 1 – 17, 2013. Thanks to our colleagues at the Space Influences Data Center (SIDC) at the Royal Observatory of Belgium for providing Helioviewer services in that period.
JHelioviewer users who edited their user profile files to use the ROB server can switch back to using Helioviewer services at NASA by removing the edits
We thank you for your patience over the past couple of weeks.
Our colleagues at the Space Influences Data Center (SIDC) at the Royal Observatory of Belgium have kindly brought a Helioviewer server online at http://swhv.oma.be/helioviewer/. The webpage provides AIA 171 and 304 images taken once every 10 minutes. PROBA2-SWAP images (at full cadence) are also provided.
Users of JHelioviewer on Mac OS X can also use the Helioviewer server at SIDC to stream movies. Go to your JHelioviewer directory and look for the subdirectory “Settings”. Add these lines to the user.properties file:
Many thanks to our colleagues at the Royal Observatory of Belgium for providing their resources in support of the Helioviewer Project.
All Helioviewer services (helioviewer.org, JHelioviewer and any use of the API) will cease temporarily in the next few hours. Users of helioviewer.org will be re-directed to notice.usa.gov. Users of JHelioviewer will not be able to stream movies from the main Helioviewer server. Users of the API will not receive any data from their requests.
Helioviewer services are ceasing temporarily due to a partial shutdown of the US federal government.
We apologize for the interruption to our service. Normal service will be resumed as soon as possible. Please keep checking this blog for further updates.
and the second one shows the same feature further onto disk:
These movies show motions in a solar prominence. Prominences are clouds of relatively cool plasma magnetically suspended in the hotter surrounding solar atmosphere. By studying the motions and oscillations in a prominence, we can gain insight into their dynamic structure. A longer term research goal is to understand what makes some prominences unstable and erupt into space, while others don’t.
This image in the AIA 304 channel shows the same prominence:
You can see from this picture that the prominence extends for a considerable distance, and appears to bend.
Thanks for sharing these movies, CuriousTess!
We are currently experiencing some issues in the pipeline that brings SDO AIA and HMI data to Helioviewer.org. The problem is being diagnosed and the latest images should be available shortly. We apologize for this delay in bringing you the latest images of the Sun.
In response to user feedback, the Earth scale tool (located in the bottom left hand corner of the viewer window) has some new functionality:
(1) The Earth scale tool can now be toggled on/off using the diagonal arrow in the top left corner. When toggled off, it looks like this:
and the viewer window looks like this
You can see the Earth scale toggle in the bottom left hand corner highlighted by the red box. When the Earth scale in the “off” mode, it does not appear in any screenshots or movies, for example:
When the toggle is on, the Earth scale appears in your movies and screenshots:
Pressing the diagonal arrow in the Earth scale tool
at any time returns the Earth scale tool to the bottom left hand corner and sets it to “off” so it will not appear in any screenshots or movies.
(2) The Earth scale tool is now draggable to anywhere in the viewer window. This makes it easier to compare the size the Earth to solar and heliospheric events; for example,
Sunspots are pretty big, and that coronal hole is enormous, compared to the Earth.
We hope you enjoy this updated capability. We welcome your feedback regarding Helioviewer. If you have any other ideas about how Helioviewer can be improved, we’d love to hear them! Thanks!