North America Nebula (NGC 7000 sau Caldwell 20) este o nebuloasă de emisie situată în constelaţia Lebăda – Cygnus, în apropierea stelei Deneb.
A fost descoperită la 24 octombrie 1786 de către William Herschel, din localitatea Slough – Anglia.
Coordonate: RA: 20h 59m 17.1s; DEC: 44° 31′ 44”
Distanţa faţă de Terra: 2590 ± 80 ani lumină
Magnitudine aparentă: +4,0
Dimensiuni aparente: 120 x 100 arcmins
Constelaţie: Cygnus
Dată fotografiere: 11 iulie 2021
Locatie: Movila, judetul Ialomiţa
Echipament:
Telescop Skywatcher 80ED
Montura Celestron AVX
Camera: Asi 294MC Pro Color
Filtru Optolong L-Extreme
Ghidare: Asiair Pro și ASI 120 Mini
Timp de integrare: 3 ore
Procesare: Stack cu DSS, procesare cu Pixinsight
Text și foto: Cristian Suciu – Astroclubul București
The North America Nebula (NGC 7000 or Caldwell 20) is an emission nebula located in constellation Cygnus, close to Deneb star. The shape of the nebula resembles that of the continent of North America, complete with a prominent Gulf of Mexico.
On October 24, 1786, William Herschel, observing from Slough, England, noted a “faint milky nebulosity scattered over this space, in some places pretty bright”. The most prominent region was catalogued by his son John Herschel on August 21, 1829. It was listed in the New Genral Catalogue as NGC 7000, where it is described as a „faint, most extremely large, diffuse nebulosity.”
Coordinates: RA: 20h 59m 17.1s; DEC: 44° 31′ 44”
Distance from Earth: 2590 ± 80 ani lumină
Magnitude: +4,0
Dimensions: 120 x 100 arcmins
Constellation: Cygnus
Date: 11 July 2021
Location: Movila, Ialomiţa county, Romania
Gear:
Skywatcher 80ED +Celestron AVX
Main Camera: Asi 294MC Pro Color
Filter: Optolong L-Extreme
Ghidare: Asiair Pro și ASI 120 Mini
Integration time: 3 hours
Processing: Stacking in DSS+ processing in Pixinsight
Text & photo: Cristian Suciu – Astroclubul București
