25 2022

Tracking sunspots up close

View 1.9K

word 270 read time 1 minute, 21 Seconds

The ESA/NASA Solar Orbiter spacecraft is speeding towards its historic first close pass of the Sun, which happens midday on 26 March 2022.

In the days leading up to and around ‘Perihelion passage’, teams at ESA have been working intensively on an observation campaign, and all ten instruments will be operating simultaneously to gather as much data as possible.

This effort will include using its remote sensing instruments, like the Extreme Ultraviolet Imager to image the Sun, as well as in-situ instruments to measure the solar wind as it flows past the spacecraft.

Observing specific targets of scientific interest on the Sun requires close coordination between flight control teams and the flight dynamics experts at ESA’s ESOC mission control centre, in Germany, and teams at the science operations centre at ESAC, in Spain.

ESA teams are using the full-disc telescopes on board Solar Orbiter to identify dynamic activity – like moving sunspots – on the surface, then will use these specific locations to calculate accurate pointing of the narrow-angle imager for later detailed observation.

Since the instruments are fixed in place to the spacecraft body, the entire spacecraft must be pointed with high precision to point to specific sunspots.

This cycle of using wide-angle images to select specific narrow-angle targets, then feeding the needed pointing back into flight control instructions takes place daily, with each iteration taking three days from initial imaging to uplink of new pointing instructions.

While such close coordination happens throughout the mission, the cycle is much speeded up during perihelion passage to ensure the best possible scientific value from ‘up close’ to the Sun.

Source by Agenzia spaziale Europea

LSNN is an independent editor which relies on reader support. We disclose the reality of the facts, after careful observations of the contents rigorously taken from direct sources, we work in the direction of freedom of expression and for human rights , in an oppressed society that struggles more and more in differentiating. Collecting contributions allows us to continue giving reliable information that takes many hours of work. LSNN is in continuous development and offers its own platform, to give space to authors, who fully exploit its potential. Your help is also needed now more than ever!

In a world, where disinformation is the main strategy, adopted to be able to act sometimes to the detriment of human rights by increasingly reducing freedom of expression , You can make a difference by helping us to keep disclosure alive. This project was born in June 1999 and has become a real mission, which we carry out with dedication and always independently "this is a fact: we have never made use of funds or contributions of any kind, we have always self-financed every single operation and dissemination project ". Give your hard-earned cash to sites or channels that change flags every time the wind blows , LSNN is proof that you don't change flags you were born for! We have seen the birth of realities that die after a few months at most after two years. Those who continue in the nurturing reality of which there is no history, in some way contribute in taking more and more freedom of expression from people who, like You , have decided and want to live in a more ethical world, in which existing is not a right to be conquered, L or it is because you already exist and were born with these rights! The ability to distinguish and decide intelligently is a fact, which allows us to continue . An important fact is the time that «LSNN takes» and it is remarkable! Countless hours in source research and control, development, security, public relations, is the foundation of our basic and day-to-day tasks. We do not schedule releases and publications, everything happens spontaneously and at all hours of the day or night, in the instant in which the single author or whoever writes or curates the contents makes them public. LSNN has made this popular project pure love, in the direction of the right of expression and always on the side of human rights. Thanks, contribute now click here this is the wallet to contribute

Similar Articles / Tracking... up close
from: astronomia
by: Agenzia spaziale Europea