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Eighth Call for PROBA2 Guest Investigator Program - Extended

Due to a recent surge in interest in the PROBA2 Guest Investigator program the proposal submission deadline has been extended to 2017-Oct-08 (23:59 CET). Those who have already submitted a proposal may re-submit their proposal if they wish to work on them more.
 

PROBA2 Eclipse Observations - 21-Aug-2017

Figure 1. SWAP eclipse image sequence from the first passage of the 2017 August 21 eclipse.

UPDATE: The SWAP images are received from the satellite. Check out the pictures and movies below. 

Monday, 21 August 2017 has marked an important celestial event, a total solar eclipse. This was a well observed event, as the eclipse transited the whole of North America. The path of the eclipse can be seen here. People along the path saw a total eclipse, and those outside this path witnessed a partial solar eclipse where the moon covers part of the sun's disk. The eclipse was visible for about two and a half minutes from any location along the path of totality, and first seen on the west coast of the USA in Oregon at around 10:19 am PDT and finally in South Carolina at around 02:44 p.m EDT (more timing information can be found here). For more information on other types of eclipses, visit here.

PROBA2 Guest Investigator 7th Call Results

We are pleased to announce that the PROBA2 Science Working Team has selected 8 proposals for the 2016 Guest Investigator Program.

Seventh Call for PROBA2 Guest Investigator Program - Deadline Extended

Due to a recent surge in interest in the PROBA2 Guest Investigator program the proposal submission deadline has been extended to 2016-April-01. Those who have already submitted a proposal may re-submit their proposal if they wish to work on them more.
 

PROBA2 views Partial Solar Eclipse - 8 & 9 March 2016

On 2016 March 8 and 9, a solar eclipse took place over the Pacific Ocean. This eclipse was total -that is, the entire solar disk was covered by the Moon- over Indonesia and the central Pacific, starting at sunrise over Sumatra and ending at sunset north of the Hawaiian Islands. Additionally, large parts of South-East Asia, Alaska and Australia witnessed a partial solar eclipse. The path of totality had a maximum width of 155 km and the maximum duration was 4 minutes and 9 seconds at the point of greatest eclipse, which was over the waters of the Pacific Ocean.

SWAP Observes Another Eclipse - and this Time it's Annular

SWAP Annular Eclipse

The total solar eclipse observed in March 2015 caught a lot of people's attention, especially as the path of totality passed over most of Northern Europe. There was a great deal of fan-fair and plans to observe the eclipse from the ground. However, due to heavy cloud cover, a lot of people had to turn to space-based observations, such as those made by the sun watching extreme-ultraviolet imager: SWAP, on board the European Space Agency's PROBA2 satellite, which images the Sun from the vantage point of a polar Earth orbit, away from pesky cloud cover. More information about the March eclipse can be found here and here.

SWAP observes the solar corona in a passband centered on a wavelength of 17.4 nm. The structures seen in SWAP images have a temperature of approximately 1 million degrees. More information about the SWAP instrument is available here.

It may come as some surprise, especially for those in Europe, that there was another eclipse observed on 2015-Sep-13. Whether you are able to observe an eclipse from the ground depends on your geographic location, in contrast to the March eclipse which was seen from Northern Europe and the Arctic regions, the September eclipse was observed in the southern hemisphere from Antarctica and southern Africa. In any given year the Earth will experience at least 2 solar eclipses due to the Earth and Moon's orbit.

PROBA2 Guest Investigator 6th Call Results

We are pleased to announce that the PROBA2 Science Working Team has selected 7 proposals for the 2015 Guest Investigator Program.

Sixth Call for PROBA2 Guest Investigator Program

SWAPLYRA

The PROBA2 PI-team welcomes research proposals for the sixth round of its Guest Investigator program for research based on SWAP and LYRA data analysis by scientists outside the SWAP and LYRA PI-teams. We encourage in particular early-career post-docs and PhD students to apply, although more senior guest investigators' proposals are also welcome. In this round we anticipate funding for around six guest investigators or teams who will visit the PROBA2 Science Center at the Royal Observatory of Belgium, in Brussels, between August 2015 and April 2016. Please note that the deadline for applications has now passed. 

PROBA2 Views a Total Solar Eclipse - 2015

Updated (25 March 2015): On 2015 March 20, PROBA2 observed a total solar eclipse — twice! The spacecraft's orbit carried it through the darkest parts of the Moon's shadow two times, first between 08:28 and 08:53 UT and again between 10:24 and 10:50 UT. Eclipse chasers, scientists, media and members of the general public have been following our data closely, so we are collecting all of our results and data products in one place for quick access.

SWAP, an Extreme-Ultraviolet solar telescope, observes the solar corona in a passband centered on 17.4 nm. The structures we see in SWAP images have a temperature of approximately 1 million degrees. LYRA, an X-ray/Ultraviolet radiometer observes the total incoming light levels from the Sun in several wavelength bands.

More information about these instruments is available here: SWAP | LYRA.

Using the SpoCA segmentation suite to track long term variations in EUV observations

A recent paper by Verbeeck, C. et al. entitled "The SPoCA-suite: Software for extraction, characterization, and tracking of active regions and coronal holes on EUV images", in the journal Astronomy & Astrophysics, discusses a new software suite that can be used to track and segment different regions of the Sun from EUV images.

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