The Rosette Nebula (H-Alpha)
|Observation data: J2000.0 epoch|
|Right ascension||06h 33m 45s|
|Declination||+04° 59′ 54″|
|Distance||5,200 ly (1,600 pc)|
|Apparent magnitude (V)||9. In Astronomy, an epoch is a moment in time used as a reference for the Orbital elements of a Celestial body. In Astronomy, an epoch is a moment in time used as a reference for the Orbital elements of a Celestial body. An emission nebula is a Cloud of Ionized Gas ( ie a plasma) emitting light of various colors Right ascension (abbrev RA; symbol α) is the Astronomical term for one of the two Coordinates of a point on the Celestial sphere In Astronomy, declination (abbrev dec or δ) is one of the two coordinates of the Equatorial coordinate system, the other being either A light-year or light year (symbol ly) is a unit of Length, equal to just under ten trillion Kilometres As defined by History The first direct measurements of an object at interstellar distances were undertaken by German Astronomer Friedrich Wilhelm Bessel in 1838 The apparent magnitude ( m) of a celestial body is a measure of its Brightness as seen by an observer on Earth, normalized to the value 0|
|Apparent dimensions (V)||1. 3 °|
|Absolute magnitude (V)||-|
|Notable features||Multipart nebula|
|Other designations||SH 2-275, CTB 21|
|See also: Diffuse nebula, Lists of nebulae|
The Rosette Nebula is a large, circular H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. This article describes the unit of angle For other meanings see Degree. In common usage a constellation is a group of celestial bodies that are connected together in some arrangement typically stars to form a visible figure or picture Monoceros (məˈnɒsərəs Μονόκερος) is a faint Constellation in the Winter night sky surrounded by Orion to the west Gemini Remote Authentication Dial In User Service ( RADIUS) is a networking protocol that provides centralized access authorization and accounting management for people or computers In Astronomy, absolute magnitude (also known as absolute visual magnitude) is the Apparent magnitude an object would have if it were at a standard In Astronomy, diffuse nebulae is the general term for illuminated Nebulae The three types of diffuse nebulae are Reflection nebulae Emission A nebula (from Latin: "mist" pl nebulae or nebulæ, with ligature or nebulas) is an Interstellar cloud of An H II region (also known as Emission nebula) is a cloud of glowing Gas and plasma, sometimes several hundred Light-years across Monoceros (məˈnɒsərəs Μονόκερος) is a faint Constellation in the Winter night sky surrounded by Orion to the west Gemini The Milky Way (a translation of the Latin Via Lactea, in turn derived from the Greek Γαλαξίας (Galaxias sometimes referred to simply The open cluster NGC 2244 is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula's matter. An open cluster is a group of up to a few thousand Stars that were formed from the same Giant molecular cloud, and are still loosely gravitationally NGC 2244 is an Open cluster in the Rosette Nebula, which is located in the Constellation Monoceros. A star is a massive luminous ball of plasma. The nearest star to Earth is the Sun, which is the source of most of the Energy on Earth Matter is commonly defined as being anything that has mass and that takes up space.
The complex has the following NGC designations:
The cluster and nebula lie at a distance of some 5,200 light years from Earth (although estimates of the distance vary considerably) and measure roughly 130 light years in diameter. The New General Catalogue ( NGC) is the best-known catalogue of Deep sky objects in Amateur astronomy. Sir John Frederick William Herschel 1st Baronet KH, FRS ( March 7, 1792 &ndash May 11, 1871)was an NGC 2244 is an Open cluster in the Rosette Nebula, which is located in the Constellation Monoceros. John Flamsteed FRS ( 19 August, 1646 - 31 December, 1719) was an English Astronomer and the first A light-year or light year (symbol ly) is a unit of Length, equal to just under ten trillion Kilometres As defined by EARTH was a short-lived Japanese vocal trio which released 6 singles and 1 album between 2000 and 2001 The radiation from the young stars excite the atoms in the nebula, causing them to emit radiation themselves producing the emission nebula we see. Radiation, as in Physics, is Energy in the form of waves or moving Subatomic particles emitted by an atom or other body as it changes from a higher energy History See also Atomic theory, Atomism The concept that matter is composed of discrete units and cannot be divided into arbitrarily tiny The mass of the nebula is estimated to be around 10,000 solar masses. Mass is a fundamental concept in Physics, roughly corresponding to the Intuitive idea of how much Matter there is in an object The solar mass is a standard way to express Mass in Astronomy, used to describe the masses of other Stars and galaxies.
It is believed that stellar winds from a group of O and B stars are exerting pressure on interstellar clouds to cause compression, followed by star formation in the nebula. This star formation is currently still ongoing.
A survey of the nebula with the Chandra X-ray Observatory in 2001 has revealed the presence of very hot, young stars at the core of the Rosette Nebula. The Chandra X-ray Observatory is a Satellite launched on STS-93 by NASA on July 23, 1999. These stars have heated the surrounding gas to a temperature in the order of 6 million kelvins causing them to emit copious amounts of X-rays. The kelvin (symbol K) is a unit increment of Temperature and is one of the seven SI base units The Kelvin scale is a thermodynamic X-radiation (composed of X-rays) is a form of Electromagnetic radiation.
The cluster of stars is visible in binoculars and quite well seen in small telescopes while the nebula itself is more difficult to spot visually and requires a telescope with a low magnification. Binocular telescopes, or binoculars (also known as field glasses are two identical or Mirror - symmetrical telescopes mounted side-by-side and A telescope is an instrument designed for the observation of remote objects and the collection of Electromagnetic radiation. A dark site is a must to see it. Light pollution, also known as photopollution or luminous pollution, is excess or obtrusive Light created mainly by Humans Among other effects Photographically the Rosette Nebula is easier to record and it is the only way to record the red color which is not seen visually. Photography (fә'tɒgrәfi or fә'tɑːgrәfi (from Greek φωτο and γραφία is the process and Art of recording pictures by means of capturing
A close up view of the Rosette Nebula