Kamil Hornoch (; born 5 December 1972) is a

Czech Czech may refer to: * Anything from or related to the Czech Republic, a country in Europe ** Czech language ** Czechs, the people of the area ** Czech culture ** Czech cuisine * One of three mythical brothers, Lech, Czech, and Rus' Places * Czech, ...

astronomer who discovered dozens of

nova A nova (plural novae or novas) is a transient astronomical event that causes the sudden appearance of a bright, apparently "new" star (hence the name "nova", which is Latin for "new") that slowly fades over weeks or months. Causes of the dramati ...

e in nearby

galaxies A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity. The word is derived from the Greek ' (), literally 'milky', a reference to the Milky Way galaxy that contains the Solar System. ...

. The

main belt The asteroid belt is a torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mars. It contains a great many solid, irregularly shaped bodies, of many sizes, but much smaller than planets, called ...

asteroid 14124 Kamil is named in his honour.

Astronomy

Kamil Hornoch became interested in

astronomy Astronomy () is a natural science that studies astronomical object, celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and chronology of the Universe, evolution. Objects of interest ...

in 1984. One year later he started with his scientific

observations Observation is the active acquisition of information from a primary source. In living beings, observation employs the senses. In science, observation can also involve the perception and recording of data via the use of scientific instrument ...

comet A comet is an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process that is called outgassing. This produces a visible atmosphere or coma, and sometimes also a tail. These phenomena ar ...

meteor A meteoroid () is a small rocky or metallic body in outer space. Meteoroids are defined as objects significantly smaller than asteroids, ranging in size from grains to objects up to a meter wide. Objects smaller than this are classified as micr ...

s, the solar

photosphere The photosphere is a star's outer shell from which light is radiated. The term itself is derived from Ancient Greek roots, φῶς, φωτός/''phos, photos'' meaning "light" and σφαῖρα/''sphaira'' meaning "sphere", in reference to it ...

variable star A variable star is a star whose brightness as seen from Earth (its apparent magnitude) changes with time. This variation may be caused by a change in emitted light or by something partly blocking the light, so variable stars are classified as ...

s, the

planet A planet is a large, rounded astronomical body that is neither a star nor its remnant. The best available theory of planet formation is the nebular hypothesis, which posits that an interstellar cloud collapses out of a nebula to create a you ...

s and

occultation An occultation is an event that occurs when one object is hidden from the observer by another object that passes between them. The term is often used in astronomy, but can also refer to any situation in which an object in the foreground blocks ...

s. He lives in Lelekovice, a village in the

South Moravian Region The South Moravian Region ( cs, Jihomoravský kraj; , ; sk, Juhomoravský kraj) is an administrative unit () of the Czech Republic, located in the south-western part of its historical region of Moravia (an exception is Jobova Lhota which trad ...

, the

Czech Republic The Czech Republic, or simply Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The ...

. Hornoch makes most of his observations from a small observatory in Lelekovice with a

reflector telescope A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image. The reflecting telescope was invented in the 17th century by Isaac Newton as an alternati ...

. Although he uses a CCD camera, he is also good in visual estimates of star

luminosity Luminosity is an absolute measure of radiated electromagnetic power (light), the radiant power emitted by a light-emitting object over time. In astronomy, luminosity is the total amount of electromagnetic energy emitted per unit of time by a st ...

, reaching an accuracy of 0.03

magnitude Magnitude may refer to: Mathematics *Euclidean vector, a quantity defined by both its magnitude and its direction *Magnitude (mathematics), the relative size of an object *Norm (mathematics), a term for the size or length of a vector *Order of ...

(confirmed by separate photoelectric measurements). He has also been acknowledged for his numerous estimates and measurements of brightness and positions of comets and variable stars, as well as position measurements of

minor planet According to the International Astronomical Union (IAU), a minor planet is an astronomical object in direct orbit around the Sun that is exclusively classified as neither a planet nor a comet. Before 2006, the IAU officially used the term ''minor ...

s. In 1993 he co-discovered (with Jan Kyselý) new variable star ES UMa. He is a member of the Czech Astronomical Society. Since 2007 he works as a professional astronomer at the

Ondřejov Observatory The Ondřejov Observatory (; cs, Observatoř Ondřejov) is the principal observatory of the Astronomical Institute () of the Academy of Sciences of the Czech Republic. It is located near the village of Ondřejov, southeast of Prague, Czech ...

Novae

In the summer of 2002, Hornoch took a series of pictures of the surrounding of the core of the

Andromeda Galaxy The Andromeda Galaxy (IPA: ), also known as Messier 31, M31, or NGC 224 and originally the Andromeda Nebula, is a barred spiral galaxy with the diameter of about approximately from Earth and the nearest large galaxy to the Milky Way. The gala ...

and discovered his first extragalactic

. Since that time,

galaxy A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity. The word is derived from the Greek ' (), literally 'milky', a reference to the Milky Way galaxy that contains the Solar System. ...

M31 has become his favourite place to observe; he has made 43 nova discoveries and co-discoveries in that region (as of May 2007). He also discovered two novae in the galaxy M81 in pictures taken by Czech astronomer Pavel Cagaš with his reflector telescope on 8 and 11 April 2007. No nova discovery had been made with such a small telescope in such a distance before. One of the novae, M81 2007 3, grew very luminous, reaching the quite extraordinary

absolute magnitude Absolute magnitude () is a measure of the luminosity of a celestial object on an inverse Logarithmic scale, logarithmic Magnitude (astronomy), astronomical magnitude scale. An object's absolute magnitude is defined to be equal to the apparent mag ...

of −10 and

apparent magnitude Apparent magnitude () is a measure of the brightness of a star or other astronomical object observed from Earth. An object's apparent magnitude depends on its intrinsic luminosity, its distance from Earth, and any extinction of the object's li ...

of 17.6 six days later. It was the brightest nova ever discovered in M81.

Awards

* In 1996 Kamil Hornoch became the first person to receive the newly established Zdeněk Kvíz Award of the Czech Astronomical Society for his activities in the field of interplanetary matter. * In 2001

Lenka Šarounová Lenka Kripac (born 19 March 1978) is an Australian singer-songwriter and actress best known for her song " The Show", from her debut album, ''Lenka''. " The Show" has been used in numerous advertisements, most notably for Old Navy, as well as ...

named the

asteroid 14124 Kamil in his honour. * In 2003 he received the Jindřich Šilhán Award of the Variable Star Observer of the Year ( cs, Cena Jindřicha Šilhána Proměnář roku) of the Czech Astronomical Society. * In 2006 Kamil Hornoch won the Amateur Achievement Award of the Astronomical Society of the Pacific.

References

{{DEFAULTSORT:Hornoch, Kamil 1972 births 20th-century astronomers 21st-century astronomers Amateur astronomers Czech astronomers Discoverers of minor planets Living people

Astronomy

Novae

Awards

See also

References