designed by Lluís Romero Ventura
The Earth astrosirius@astrosirius.org

THE CYGNU´S WALL - NORTH AMERICA

NEBULAE

The North America Nebula (NGC 7000 or Caldwell 20) is an emission nebula in the constellation Cygnus, close to Deneb. Cygnus's Wall is a term for the "Mexico and Central America part" of the North America Nebula. The Cygnus Wall exhibits the most concentrated star formations in the nebula. The North America Nebula is large, covering an area of more than four times the size of the full moon; but its surface brightness is low, so normally it cannot be seen with the unaided eye. Binoculars and telescopes with large fields of view (approximately 3°) will show it as a foggy patch of light under sufficiently dark skies. However, using a UHC filter, which filters out some unwanted wavelengths of light, it can be seen without magnification under dark skies. Its prominent shape and especially its reddish color (from the hydrogen emission line) show up only in photographs of the area.

THE CYGNU´S WALL - NORTH AMERICA

NEBULAE

Place: Ager-Lleida-Spain SQM: 21.5 Dates: Several days (July-August 2016) Details Telescope: GSO RC14 Truss Mount: ASA DDM85 Camera: Moravian G3-11000 Focuser: Seletek Armadillo 2 Flattener: CCDT67 0.67x Exposure: L:14x600 sec bin1 RGB: 34x300 sec bin2 H-Alpha: 26x900 sec bin1 Processing: Pixinsight & Photoshop CC Software: MaximDL, Sequence,Autoslew Control Remote: Talon6

Nebula

& Dust