Monday, February 27, 2017

Sterrenkijkdagen 4 Maart - Helios Averbode in Langdorp


Helios Averbode zal bij helder weer aanwezig zijn te Langdorp (Wolfs Café). Wat zal er te zien zijn?
De maan is voor 43% verlicht en zal voor een prachtig beeld zorgen in de telescopen.


In de vroege avond zijn Venus (verlichten sikkel van 13%), Mars en Uranus laag boven de horizon te zien. Later op de avond rond 23h00 komt Jupiter boven de horizon met haar 4 helderste manen. Ook planetoide Vesta is waarneembaar in het sterrenbeeld "tweelingen".




Daarnaast zijn er de pleiaden M45 een open sterrenhoop, M42 de Orionnevel en heel wat andere prachtige sterrenhopen zoals M36, M37, M79, .. te zien. Kijk mee naar Betelgeuze, een gigantische ster, die 1200x groter (1 680 000 000 km in diameter of 11 x de afstand aarde - zon ) is dan onze eigenste zon.
Kleurrijke dubbelsterren zorgen voor wat kleur in de telescoop.

Tot dan !

Zie ook sterrenkijkdagen VVS

Sunday, February 26, 2017

Books & Website of the Sun

Our sun is the nearest star. How it works? What are sunspots? What is nuclear fusion? What are CME's? Many questions can be found in my reference list below. But the best books so far I found are :




15 Million Degrees,                Zon en Aarde - Een unieke relatie and          De zon.

For amazing sun video's, use NASA, SDO and ESA websites.


Boeken/Papers
15 Million Degrees, Lucie Green; 2016
An observational overview of solar flares, L. Fletcher; 2011
Astrophysics processes, Hale Bradt; 2008
Data analysis and mathematical modeling of the initiation of CME’s, F. Zuccarello; 2011
De Sterren, Jan Cuypers; 2001
De Wetenschap van de Kosmos, Christoffel Waelkens; 2012
De zon, David Whitehouse; 2006
De zon, Jan Janssens; 1995
De zon, Jan Van Gestel; 1990
Handboek Sterrenkunde, G. Schilling; 2015
Het zonnestelsel, Nico Hey; 2007
How stars work, P. Armitage; 2004
Nearest Star – The surprising science of our sun, Leon Golub; 2001
Stijn en de sterren, Stijn Meuris; 2009
Solar flares and particle accelaration, E. Kontar; 2012
The Sun as a Star, Roger Tayler; 1996
Zon en aarde, H. Friedman; 1986
Zon en aarde; een unieke relatie, Jan Janssens; 2003

Websites
VVS Website, Urania Website, MIRA, APOD, Space Weather, Poollicht.be, Potzdam University
NASA, ESA, Aeronomie, NOAA, SDO, Solar Physics, Google, Wikipedia, European Space Weather
Slideshare Website, Frank Deboosere, Stichting Universum, University of Glasgow

Thomson Higher Education, Max Planck Instituut Astrophysics, UCAR Heliophysics

Saturday, February 25, 2017

Frank Deboosere - MIRA Observatory



It was my first time visiting the Observatory Mira at Grimbergen - Brussels. At the time I arrived it was not crowdy at all and I was guided personally around showing all the telescopes located on the roof of the building.  Great hospitality :)


The main purpose of the visit however was attending a lecture about the sun presented by Frank Deboosere. He provided the lecture twice as the room was to small to fit all attendees. The presentation gave a good overview about how the sun works, sunspots (with butterfly diagram and Maunder minumum), sunflares and what will happen with the sun in the future.



After the lecture Frank was very open to talk and we talked about some specifics like copyrights of his lectures.

In the library I found some interesting books of the sun which I could use to further complete my script of the sun. And by luck I was able to found the book "Zon en aarde" from Jan Janssens. As it was for sell, I did bought a copy of the book.


Thursday, February 23, 2017

NASA & Belgium Team discovered 7 Earth-like planets just around the corner


In May 2016 the TRAPPIST (TRAnsiting Planets and Planetesimals Small Telescope) telescope in Chile lead by Belgium atronomers found 3 exoplanets around a star which got the name Trappist 1.  Today NASA announced that the Spitzer Space Telescoop confirmed the existance of those 3 exoplanets and found 4 more around the star which is located only 40 light years from our system. All exoplanets are in the habitable zone. See main article from NASA and Belgium related article.


The discoverage has some Belgium roots and "The Washington Post' wrote: "Like Trappist beer, speculoos (Search for Planets EClipsing ULtra-cOOl Stars) are a Belgian delicacy. The next effort will have to be called WAFFLES"


Wednesday, February 22, 2017

Sterrenkijkdagen 4 maart. Helios in Langdorp


Op 4 maart zal Sterrenclub Helios aanwezig zijn te Langdorp (Aaarschot)  tijdns de nationale sterrenkijkdagen. Op de terreinen achter Wolf Café in Langdorp worden bij helder weer diverse opgesteld richting open hemel. Zie ook VVS-website

Er is die avond veel te zien aan de hemel (bij helder weer uiteraard). Kom naar Langdorp en werp een blik in het heelal op o.a. de planeet Jupiter, de maan, de Andromeda- en Orionnevel.



Eén van de opvallendste sterrenbeelden aan de winterhemel is zonder twijfel Orion, "de jager". In het midden van het sterrenbeeld zie je drie sterren op een rij, de zogenaamde "gordel" van Orion. Daaronder zie je een zwak vlekje: de Orionnevel.

Ook duidelijk zichtbaar: het kleurverschil tussen de ster Betelgeuze (rood) en Rigel (blauw). Rechtsboven Orion bevindt zich het sterrenbeeld Stier, met de heldere rode ster Aldebaran. Kijk je nog verder westwaarts (rechts), dan zie je de Pleiaden, een prachtige open sterrenhoop. Met een verrekijker zal je vele sterren in deze sterrenhoop zien.

De maan staat in haar eerste kwartier en is zichtbaar als een mooi sikkeltje. Doorheen een telescoop heb je een adembenemend uitzicht op de kraters en zeeën van gestolde lava. Op 4 maart is er bovendien een sterbedekking: Gamma Tauri, een ster van magnitude 3.9 wordt door de Maan bedekt. Dit is fenomeen is makkelijk te zien met een kleine telescoop. De bedekking start om 22u52 en eindigt om 23u51.


Saturday, February 18, 2017

Venus Phase 0.3

Venus is still very bright during sunset. Current phase is 30% and picture taken using ASI224MC and Autostakkert!.


M37-Open Cluster

M37 is an open cluster and is one of the richest star clusters in the Messier Catalog. The cluster is located at a distance of 4500-6500 ly from us.
The picture was taken with a TAL200K using my Nikon D60 on the evening of Feb 13, 2017.




Wednesday, February 15, 2017

Perfect morning


After many hours of observation awaiting a beautifull sunrise on Valentine's Day.

Tuesday, February 14, 2017

Moon 91% - Waning Gibbous

It took a while but we have a clear sky. With waning gibbous moon 91% ...


Friday, February 10, 2017

No Luck Observing 45P/Honda Comet

Very poor seeing this morning with the consequence no observation of Comet 45P/Honda. Instead a full moon.


Sunday, February 5, 2017

Helios Meeting : Fantastic Workshop Investigating Planets

Helios Members attending workshop organized by Lieven
The members of the Astronomy club Helios attended the wokshop of Lieven on how to Practical Investigate Planets on a "Saterdaymorning" based on the  book "Praktisch planeetonderzoek voor de zaterdagochtend - Sevastiaan De Vet". With basic ingrediences like oil, cacao powder, water, candle wax, ... we could demonstrate the surface of pluto with Rayleigh Bénard convection cells, vulcano eruptions at Mars and shooting out of ice at Enceladus, Saturn's moon. The cooking skills of the team were tested with succes as all experiments were completed succesfully. At the end of the workshop 360° Virtual Reality movies from Youtube were shown using VR Glasses. What a experience and will this be the new future on how we will be looking at pictures? 
We had a great and fun afternoon, thanks to Lieven to organize this fantastic workshop.

Hexa shaped Rayleigh Bénard convection cells - lookalike Pluto's Surface
Vulcano Eruption at Mars using candle was, sand and water

One minute before waterrocket lift off demostrating shooting out ice at Enceladus

Saturn Fly By using VR glasses 




Friday, February 3, 2017

Weather Summary Jan 2017


The average temperature in Jan was 0.6°C and about 4°C lower than Jan 2016. On top of this Jan 2017 had 50% less rain and 10 days more air frost days then Jan 2016.

Thursday, February 2, 2017

200 days to the Eclipse

On August 21, 2017, a total eclipse of the sun will be observed across big parts of the USA. See also this link

Wednesday, February 1, 2017

Moon, Venus and Mars at evening sky

Some clouds but still it was possible to see the moon, Venus and Mars low above the western horizon.