California Nebula

The California Nebula Image File history File links Size of this preview: 800 × 537 pixel Image in higher resolution (900 × 604 pixel, file size: 244 KB, MIME type: image/jpeg) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): California Nebula ...
Observation data: J2000.0 epoch
Type:	Emission
Right ascension:	04h 03m 18.00s
Declination:	+36° 25′ 18.0"
Distance:	1,000 ly
Apparent magnitude (V):	??
Apparent dimensions (V):	2.5° long
Constellation:	Perseus
Physical characteristics
Radius:	-
Absolute magnitude (V):	-
Notable features:	-
Other designations:	NGC 1499
See also: Diffuse nebula, Lists of nebulae

The California Nebula (NGC 1499) is an emission nebula located in the constellation Perseus. It is so named because it appears to resemble the outline of the US State of California on long exposure photographs. It is almost 2.5° long on the sky and, because of its very low surface brightness, it is extremely difficult to observe visually. It can be observed with a H-Beta filter (isolates the H-Beta line at 486 nm) in a rich-field telescope under dark skies. It lies at a distance of about 1,000 light years from Earth. In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... Equatorial Coordinates Right ascension (abbrev. ... In astronomy, declination (abbrev. ... A light-year or lightyear (symbol: ly) is a unit of measurement of length, specifically the distance light travels in vacuum in one Julian year. ... // Headline text HEY!! HOW ARE YOU ALL?? Its nice of you to come read this page. ... A degree (in full, a degree of arc, arc degree, or arcdegree), usually symbolized °, is a measurement of plane angle, representing 1／360 of a full rotation. ... This article or section does not adequately cite its references or sources. ... Perseus is a northern constellation, named after the Greek hero who slew the monster Medusa. ... Remote Authentication Dial In User Service (RADIUS) is an AAA (authentication, authorization and accounting) protocol for applications such as network access or IP mobility. ... In astronomy, absolute magnitude is the apparent magnitude, m, an object would have if it were at a standard luminosity distance away from us, in the absence of interstellar extinction. ... In astronomy, diffuse nebulae is the common term for both reflection nebulae and emission nebulae. ... The New General Catalogue (NGC) is the most well-known catalogue of deep sky objects in amateur astronomy. ... The Triangulum Emission Nebula NGC 604 lies in a spiral arm of Galaxy M33, 2. ... Perseus is a northern constellation, named after the Greek hero who slew the monster Medusa. ... Motto: (Out Of Many, One) (traditional) In God We Trust (1956 to date) Anthem: The Star-Spangled Banner Capital Washington D.C. Largest city New York City None at federal level (English de facto) Government Federal constitutional republic  - President George Walker Bush (R)  - Vice President Dick Cheney (R) Independence from... Official language(s) English Capital  Sacramento Largest city  Los Angeles Area  Ranked 3rd  - Total 158,302 sq mi (410,000 km²)  - Width 250 miles (400 km)  - Length 770 miles (1,240 km)  - % water 4. ... Surface brightness is a concept used in astronomy when describing extended astronomical objects such as galaxies and nebulae. ... A light-year or lightyear (symbol: ly) is a unit of measurement of length, specifically the distance light travels in vacuum in one Julian year. ... Adjectives: Terrestrial, Terran, Telluric, Tellurian, Earthly Atmosphere Surface pressure: 101. ...

The California Nebula was discovered by E. E. Barnard in 1884. Edward Emerson Barnard (December 16, 1857 – February 6, 1923) was an American astronomer. ... 1884 (MDCCCLXXXIV) is a leap year starting on Tuesday (click on link to calendar) of the Gregorian calendar (or a leap year starting on Thursday of the 12-day-slower Julian calendar). ...

External link

• NGC 1499 at SEDS