Astrophotography by Anthony Ayiomamitis

Deep Sky Object Image Gallery

Nebulae represent clouds of gas and dust which appear as hazy or fuzzy objects when viewed through a telescope and are characterized as one of four types (emission, planetary, reflection or dark). Emission nebulae, such as the Lagoon nebula (M8), simply glow, for example, with a stunning shade of red. Planetary nebulae appear as small greenish disks through a telescope, thus emulating the planets Uranus and Neptune, as a result of gas masses being thrown off by dying stars (ex. M27, Dumbbell nebula) or represent supernova remnants (ex. M1, Crab nebula). In contrast, reflection nebulae are characterized with gas surrounding young stars which reflect the stellar light (ex. M45, Pleiades) and, thus, yield beautiful images of nebulosity. Finally, dark nebulae are detectable and studied only using parts other than the visible spectrum and are believed to be associated with the formation of stars (ex. M16 in Serpens).

Note: The expansive emission nebula NGC 7000, more commonly referred to as the North America nebula owing to its characteristic shape, is a large area of nebulosity lying to the immediate southeast of Deneb (-Cyg) and is equivalent to about twelve full moons in apparent area. NGC 7000 is active in star formation and includes three clusters, namely NGC 6989 to the northwest, NGC 6996 to the north and NGC 6997 to the west. NGC 7000 lies at a distance of 2,200 light-years away and is estimated to span 100 light-years across. To its right and separated by a dark absorption cloud is the also expansive Pelican emission nebula (IC 5067 and IC 5070). Similarly, to its bottom right is the smaller emission nebula IC 5068. The North America nebula is best observed using low magnifications (50-100x) during mid-summer preferably under dark skies as it approaches zenith around midnight and using either a UHC or O-III filter. NGC 7000 was discovered by William Herschel in 1786.

Note: The image below is a two-part mosaic based on 560 minutes data.

Please click on the image below to display in higher resolution (1200 x 950)

Image Details
NGC 7000 - North America Emission Nebula in Cygnus
Imaging Details
NGC Number:
7000

Common Name(s):
North America Neb

Other Designations:
Sh2-117, C20

Object Type:
Bright Nebula

Object Classif:
E Ir AF

Constellation:
Cygnus

RA / Dec:
21h 01m 48s /
44 12' 00"


Distance:
2,200 light-yrs

Object Size:
120' x 100'

Magnitude:
4.5
Date:
July 17-18, 2010 (H-a)
22:35 - 04:30 UT+3

July 18-19, 2010 (RGB)
23:30 - 04:05 UT+3


Location:
Athens, Greece

Equipment:
Takahashi FSQ-106/f5
AP 1200GTO GEM
SBIG ST-10XME
SBIG CFW10
Baader 7nm H-a
SBIG LRGB filters


Integrations:
Lum (H-a) :  320 min (2 x 08 x 20 min)
Red :  080 min (2 x 04 x 10 min)
Green :  080 min (2 x 04 x 10 min)
Blue :  080 min (2 x 04 x 10 min)
Binning :  1x1 (H-),  1x1 (RGB)

Image Scale:
2.65" per pixel

Temperatures:
Ambient : + 24.0 C
CCD Chip : - 10.0 C

Software:
CCDSoft V5.00.195
CCDStack V1.6.0.5
eXcalibrator V1.0.3.0
Aladin V6
Photoshop CS2