Friday, January 28, 2011

APOD 3.2

m51ir_hubble_big.jpg


This picture shows the amazing M51 in infrared light.  M51 is a whirlpool galaxy that was photographed here by hubble.  The purpose of this picture is to show the dust that surrounds the galaxy so most of the light from the stars was digitally removed and infrared light was used to highlight that dust.  I also found the picture very interesting because if you scroll your mouse over the picture it shows the optical version which shows an interesting contrast between the two spectra.

APOD 3.1

M78WFI_chekalin.jpg


M78 is one of the many nebulas in the constellation Orion.  It is a very large and bright reflection nebula that is commonly observed by many telescope users.  This is a great image of the nebula as it even was recognized as the winner of the Hidden Treasures 2010 astrophotography competition.  The European Southern Observatory took the picture.  M78 is about 1600 light years and has a bluish center with dark and dusty clouds around it.

Monday, January 10, 2011

Johann Encke - Biography

Encke was born in Hamburg, Germany.  He studied astronomy at the University of Gottingen but was enlisted in the Prussian army.  Once back from the forces, Encke resumed his schooling while being an assistant at the Observatory of Seeberg.  At this observatory, Encke studied a comet and correctly assigned a period to that comet.  This discovery later won him the Cotta prize in 1817.  This comet belongs in the same family as the Halley's comet.  Encke did many observations and calculations which ultimately led to him discovering the short periodic comets.  This information was sent to Gauss, Olbers, and Bessell.  The discovered comet was also identified as the cause of the Taurids meteor showers.

While Encke put in many hours towards his passion, he also led a personal life.  Encke married Amalie Becker and they had five children, three boys and two girls.  The following year after the marriage, Encke was named a Fellow of the Royal Society

Encke eventually became the leader of the Seeberg observatory in 1822 but was then promoted in 1825 to another observatory located in Berlin.  Due to recommendations from Bessell, Encke became the leader of the new observatory as well.  Encke did a lot of work studying comets and asteroids.  He even added four volumes to the Observations of the Berlin Observatory.  Johann also discovered a disparity in the rings of saturn and this gap of rings was named The Encke Gap.

In 1844 Encke became a professor of Astronomy at the University of Berlin.  A lot of work was expected of him in the area of computing the movement of asteroids.  Later in life his observation ability deteriorated mainly due to his development of brain disease.  Despite this Encke remained the director of the observatory until his death in 1865.  Encke's life was full of astronomical contributions.  Some of these contributions are; the comet Encke, the moon crater Encke,  the asteroid 9134 Encke, and the Encke gap are all important contributions made by the astronomer Johann Encke.

Sunday, January 9, 2011

Observation 2.2

10:48 pm - 1/9/11

The sky wasn't clear so I wasn't able to observe as much as I hoped for but I still managed to point out some things.  The most clear and easily identifiable was Orion's belt.  The belt is three stars located very close to each other in a straight line resembling the belt of the hunter.  Due to the clouds that was all I able to identify.  

APOD 2.7

greenflash_manzona_big.jpg

This picture shows a rare phenomena that many believe is a myth.  This rare occurrence is called a green flash.  The flash can only be seen from distant clear horizons and only lasts a few seconds.  As seen by the picture an even rare blue flash can sometime be seen.  These color effects are caused by the earth's atmosphere acting like a prism.  

APOD 2.6

helix_henry2000.jpg

This image is of the Helix Nebula which is in the constellation Aquarius.  Inside this constellation a sun-like star is dying.  This image is a 10 hour exposure of the planetary nebula.  The nebula has an outer halo and a very bright, hot central star.  The nebula is about 3 light-years across.  

Thursday, January 6, 2011

Johann Encke - Sources

"Johann Franz Encke: Biography from Answers.com."Answers.com: Wiki Q&A combined with free online dictionary, thesaurus, and encyclopedias. N.p., n.d. Web. 6 Jan. 2011. <http://www.answers.com/topic/johann-franz-encke>"


"Wikipedia. "Johann Franz Encke ." Wikipedia, the free encyclopedia. N.p., n.d. Web. 6 Jan. 2011. <http://en.wikipedia.org/wiki/Johann_Franz_Encke>