Archive for the ‘News’ Category

Solar probabilities and Latest flare widgets

Tuesday, August 3rd, 2021

Two new sidebar widgets have been developed and added – the (flare) Probability and the Latest flare one.

The Latest flare widget shows the date of the last detected X-ray flare by the GOES satellite along with the begin, maximum and end times. It also shows the class of the flare at these three moments as well as the current ratio of the X-ray flux and the integrated value.

The Probability widget shows the probabilities for C, M and X flares for the next three days in percents. It also shows the probability for elevated proton levels (≥10MeV) above the storm threshold value (10 protons/cm2s-1sr-1) and the probability for a polar cap absorption (PCA) event created by such a storm.

New processing for SOHO’s LASCO and EIT

Tuesday, August 3rd, 2021

New image processing has been implemented for LASCO C2 and C3 coronagraph data. The default processed images from NASA with applied center rotation are now accessible from the respective [ALT] links.

The new processing includes stronger star field filtering combined with a modified approach for subtracting the background for C2 from a daily regenerated mean background from the last 96 hours. This approach produces some artifacts, such as darker regions near the occulter disk but it helps with the contrast of some fainter CMEs.

If the latest image is not fully retrieved from the spacecraft, the previous available one is used to fill the gaps in the data until the new image data are available.

The diff processing for C2 and C3 was also improved resulting in better data/noise ratio and all null pixels in the resulting images are mapped to rgb(128, 128, 128).

Although EIT images cannot compete with the resolution and cadence of the SDO AIA ones, their processing was also updated in order to improve their dynamic range and details.

Server update – dropping support for TLS 1.0

Monday, July 8th, 2019

Today, a few configurations updates were performed on the server in order to keep it secured and up to date. One of the changes was dropping support for TLS 1.0 – a cryptographic protocol, now considered outdated and adding support for TLSv1.3 which provides security and performance improvements. As a result, a few very old browsers and clients not supporting TLSv1.1, TLSv1.2 or TLSv1.3 will not be able to connect to the website anymore. The following is a list of such operating systems and software products, known to be affected by this update:

  • Android 2.3.7
  • Android 4.0.4
  • Android 4.1.1
  • Android 4.2.2
  • Android 4.3
  • Internet Explorer 6 / Windows XP
  • Internet Explorer 7 / Windows Vista
  • Internet Explorer 8 / Windows XP
  • Internet Explorer 8-10 / Windows 7
  • Internet Explorer 10 / Windows Phone 8.0
  • Java 6u45
  • Java 7u25
  • OpenSSL 0.9.8y
  • Safari 5.1.9 / OS X 10.6.8
  • Safari 6.0.4 / OS X 10.8.4

If you are using a software product or an operating system listed here or an older one, you should consider updating it as the security protocols it uses are prone to vulnerabilities and are now considered outdated. A second configuration update in the next days will also drop support for TLS 1.1 as it is also considered outdated. As TLS 1.1 is not widely adopted, it will have a very limited impact on accessibility (most TLS 1.0 compatible operating systems and software were updated to support TLS 1.2).

For a more detailed list of (un)supported protocols, please refer to the following tables: 
Browsers: [link]
Libraries: [link]

UPDATE (17.07.2019)

Support for TLSv1.1 has also been discontinued today. Both TLSv1.0 and 1.1 will be deprecated in the beginning of 2020 by AppleGoogleMozilla and Microsoft

STEREO Behind recovery status update (October 11)

Wednesday, October 12th, 2016

There have been six attempts to contact the STEREO Behind spacecraft using 70 meter stations between September 27 and October 9 without success. The last telemetry received from Behind was on September 18, and the last time the carrier wave was detected was on September 23. Recovery attempts for STEREO Behind have moved back to a monthly schedule until the spacecraft has returned to a point in its orbit where the attitude is in a favorable configuration for power and communications.