Saturday, October 15, 2022

Heiko Falcke - Black Hole Lecture @ Leiden

After a 3,5h drive both Walter and myself arrived in Leiden. We found a restaurant " De Vriend" which served food within a half hour time window. The staff was very cooperative to get the food served; we even got time for a dessert. Thx!



Lecture by Heino Falcke on black holes in Leiden. Leiden is currently the City of Science 2022. The mystery of black holes is far from solved, but we do have a picture! It was sensational world news: on April 10, 2019, Heino Falcke, international scientist and preacher in his spare time, presented the very first photograph ever taken of a black hole. What does that space have to teach us about the world, and about ourselves, and maybe even about God? 



During the first hour Prof. dr Heino Falcke talked about black holes and how the first picture was made. After a small break, the setting of the room was changed; the chairs were set in a circle. Due to this setting the scientifical lecture felt like a living room discussion. The audience got the chance to ask questions. Not only scientifical questions but also religious questions.  This set up was a very interesting experience.
 
Prof. dr. Heino Falcke Heino Falcke is professor of Astroparticle Physics and Radio Astronomy at the Institute for Mathematics, Astronomy and Particle Physics (IMAPP) at Radboud University Nijmegen. Falcke is known for his research in the field of black holes. We are not talking about just black holes, but about supermassive black holes. In addition, he is engaged in researching the limits of the universe.




Thursday, October 13, 2022

Govert Schilling - The Elephant in the Universe

This evening I, together with my astronomy collegue Walter, attended the lecture "The Elephant in the Universe" on dark matter by Govert Schilling at the University of Maastricht.


The existence of dark matter was first suggested in 1922 by the Dutch astronomer Jacobus Kapteyn. Meanwhile, there are many more convincing clues to the existence of the enigmatic stuff. However, it is unknown what kind of particles the dark matter consists of. Future observation programs may change that, but some physicists are also toying with the idea that dark matter doesn't exist at all, and that instead there is something wrong with our ideas about gravity. In this lecture, Govert Schilling gave a fascinating overview of the search for dark matter - one of the greatest unsolved mysteries in contemporary physics and astronomy.


Some notes taken : Jan Oort, the first one measuring the vertical speed parameter of stars which resulted in calculating the mass of our milky way. Fritz Zwicky measured the speed of Galaxies in the Coma cluster. Vera Ruben, seen asthe mother of Dark Matter, found a flat rotation curve when measuring the verlocity of nebulas in the Andromeda Galaxy. Copernicus, the first space telescope, found that all baryonic matter was created during the big bang based on the % deutereum/proton and thus dark matter can not be normal baryonic. Jim Peebles and the cosmic background radiation, WIMP's, Elana Aprile & Xenon, MOND,... and much more. At the end... our universe consist of 5% baryonic matter, 69% dark energy and 26% dark matter. 

The one note I take away is that, maybe there is a correlation between the inflation process which happened during the first moments after the big bang and the current inflation of the universe . 

Sunday, October 9, 2022

Sun in H-alpha AR3116

 

The Sun this morning, Oct 9, 2022. Picture taken in H-alpha with lots of activity in the north-eastern part of sun (region AR3116). 

The gif file below shows the activity in detail - time differnce is 6 minutes. 


Setting: SolarMaxIII 70/400f/5.7 DS, ASI290MM, reducer x0,5
Capture: light ser16bit 1000frames (75% stacked), flats
Software: SharpCap4, AS3!, CS4

Sunspot AR3112 More Images


Images of Sunspot AR3112 on October 6th; above an overview of the sunspot region with different spots, below the p-sunspot AR3112.

Setting: TAL200K f/8.5, ASI290MM, Barlow x2, OIII filter, ND3.8 filter
Software: SharpCap4, AS3! (75% frames stacked), CS4, DeNoise AI




Sunspot AR3112 (OIII filter)

 


Image of Sunspot AR3112 on October 6,2022.

Setting: TAL200K f/8.5, ASI290MM, Barlow x2, OIII filter, ND3.8 filter
Software: SharpCap 4, AS3! (750frames), CS4, DeNoise AI


Tuesday, October 4, 2022

Jupiter GRS October 2, 2022

A clear sky and exactly one week after Jupiter's opposition. Seeing was moderate and the great red spot (GRS) was visible all evening.

Setting: TAL200K f/8.5, ASI224MC, Barlow x2 and ADC
Software: SharpCap 4, AS3!, CS4, DeNoise AI
Polarallignment with ASI290MM, SharpCap 4 and guidingscope 60x240



Monday, October 3, 2022

Reworked Jupiter with GRS

 



A clear sky and exactly one week after Jupiter's opposition. Seeing was moderate and the great red spot (GRS) was visible all evening.


Setting: TAL200K f/8.5, ASI224MC, Barlow x2 and ADC
Software: SharpCap 4, AS3!, CS4, DeNoise AI
Polarallignment with ASI290MM, SharpCap 4 and guidingscope 60x240