Tag Archives: emission nebula

IC 410, Emission Nebula



IC 410 is an Emission Nebula in the constellation Auriga. Nebula has its heart – open cluster NGC 1893.

Auriga is one of the 48 constellations listed by the 2nd-century astronomer Ptolemy and remains one of the 88 modern constellations. Located north of the celestial equator, its name is the Latin word for “charioteer”, associating it with various mythological charioteers, including Erichthonius and Myrtilus. Auriga is most prominent during winter evenings in the Northern Hemisphere, along with the five other constellations that have stars in the Winter Hexagon asterism. Because of its northern declination, Auriga is only visible as far as 34° south; for observers farther south it lies partially or fully below the horizon. A large constellation, with an area of 657 square degrees, it is half the size of the largest constellation, Hydra.

Imaging telescopes or lenses: Selfmade CA300
Imaging cameras: Moravian Instruments G2-8300 FW
Mounts: Vixen Atlux
Guiding telescopes or lenses: Selfmade CA300
Focal reducers: ASA Wynne 3″ Corrector 0.95x – 3 KORRW
Software: Regim,  Nebulosity
Filters: Astronomik Ha, OIII, SII 12nm 31mm
Accessories: Eigenbau Newtonmaster
Resolution: 1246×1669
Dates: Jan. 16, 2012
Frames: 32×480″
Integration: 4.3 hours
Avg. Moon age: 21.73 days
Avg. Moon phase: 54.48%
RA center: 80.661 degrees
DEC center: 33.371 degrees
Pixel scale: 1.970 arcsec/pixel
Orientation: -177.437 degrees
Field radius: 0.570 degrees
Author: Starhopper

The Heart and Soul Nebulas

Image Credit & Copyright: Leonardo Orazi

Explanation: Is the heart and soul of our Galaxy located in Cassiopeia? Possibly not, but that is where two bright emission nebulas nicknamed Heart and Soul can be found. The Heart Nebula, officially dubbed IC 1805and visible in the above zoomable view on the right, has a shape reminiscent of a classical heart symbol. Both nebulas shine brightly in the red light of energized hydrogen. Several young open clusters of stars populate the image and are visible above in blue, including the nebula centers. Light takes about 6,000 years to reach us from these nebulas, which together span roughly 300 light years. Studies of stars and clusters like those found in the Heart and Soul Nebulas have focussed on how massive stars form and how they affect their environment.
NASA APOD 11-Feb-2014

NGC 1893: Tadpole Nebula in Narrowband

The Tadpole Nebula (IC 410) is an emission nebula around an open star cluster (NGC 1893). The “tadpoles” are clumps of gas and dust from the formation of the cluster. Inside them, new stars are born. The tails from the “tadpoles” are caused by the solar wind of the stars of NGC 1893 (that’s why the point away from the star cluster).

Imaging telescopes or lenses: Takahashi TOA-130
Imaging cameras: FLI ML 11002
Guiding telescopes or lenses: Takahashi TOA-130
Guiding cameras: Starlight Xpress Lodestar
Software: Main Sequence Software Sequence Generator Pro, CCDStack2
Filters: Astrodon Narrowband Set (Ha OIII SII)
Accessories: .67 Field Flattener
Dates: Jan. 17, 2014
Locations: Home
Frames: 46×1200″

Autor: Mark Striebeck

AstroPhotography of the day by SPONLI

29 January 2014

We select the best works of amateur astrophotographers with details of equipment, shooting processing etc.

Gamma Cassiopeiae and IC 63 and IC 59 emission and reflection nebulae

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A hot, variable, and rapidly rotating star about 600 light-years distant, Gamma Cas also ionizes surrounding interstellar material, including the wispy IC 63 (left) and IC 59 emission and reflection nebulae. The two faint nebulae are physically close to Gamma Cas, separated from the star by only a few light-years.

Imaging telescopes or lenses: Orion ED80T CF
Mounts: iOptron iEQ-45
Guiding cameras: Atik 314L+ Mono
Software: DeepSkyStacker, PixInsight, Artemis Capture
Filters: Astronomik OIII 12nm, Astronomik H-alpha 12nm
Accessories: kwiq guider mini guide scope
Dates: Nov. 12, 2013
Frames: 42×360″

Autor: John Leader

AstroPhotography of the day by SPONLI

26 January 2014

We select the best works of amateur astrophotographers with details of equipment, shooting processing etc.

The Tadpoles of IC 410


Image Credit & Copyright: Martin Pugh

This telescopic close-up shows off the otherwise faint emission nebula IC 410 in striking false-colors. It also features two remarkable inhabitants of the cosmic pond of gas and dust below and right of center, the tadpoles of IC 410. The picture is a composite of images taken through narrow band filters. The narrow band image data traces atoms in the nebula, with emission from sulfur atoms in red, hydrogen atoms in green, and oxygen in blue. Partly obscured by foreground dust, the nebula itself surrounds NGC 1893, a young galactic cluster of stars that energizes the glowing gas. Composed of denser cooler gas and dust the tadpoles are around 10 light-years long, potentially sites of ongoing star formation. Sculpted by wind and radiation from the cluster stars, their tails trail away from the cluster’s central region. IC 410 lies some 12,000 light-years away, toward the constellation Auriga.

NASA APOD 09-Jan-14 

NGC 2359: Thor’s Helmet nebula

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NGC 2359
 (also known as Thor’s Helmet) is an emission nebula in the constellation Canis Major. The nebula is approximately 15,000 light-years away and 30 light years in size. The central star is the Wolf-Rayet star HD 56925, an extremely hot giant thought to be in a brief, pre-supernova stage of evolution. It is similar in nature to the Bubble Nebula, interactions with a nearby large molecular cloud are thought to have contributed to the more complex shape and curved bow-shock structure of Thor’s Helmet.

Imaging telescopes or lenses: Home made 10inch Serrurier Truss
Imaging cameras: SBIG STF8000M STF8000M
Mounts: Skywatcher NEQ6 Pro NEQ 6 PRO
Software: Cyanogen Maxim DL, Startools
Filters: Baader Planetarium O3 8.5nm 36mm, Baader Planetarium Ha 7nm 36mm
Accessories: Starlight Xpress SX USB Filter Wheel 7x36mm, Teleskop-Service TS9-OAG off axis guider
Resolution: 3208×2357
Dates: Jan. 4, 2014
Locations: Melbourne
Baader Planetarium Ha 7nm 36mm: 6×600″ -25C bin 1×1
Baader Planetarium O3 8.5nm 36mm: 6×600″ -25C bin 1×1
Integration: 2.0 hours

2 hours of Ha and O3 mapped as LRGB -> O3.Ha.O3.O3
Stacked in Maxim, processed in Startools.

Autor: Alistair Symon

AstroPhotography of the day by SPONLI
7 January 2014

We select the best works of amateur astrophotographers with details of equipment, shooting processing etc.

NGC 7000: The North America Nebula (Hubble Palette)

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 Hα emission line) show up only in photographs of the area.

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.

Camera : SBIG STF-8300M (cooled at-5C)
Telescope/Lens : Takahashi FSQ-85ED (450mm f/5.3)
Filter : Astrodon Ha, SII, OIII
Tracking Mount : Takahashi EM-11
Autoguide : SBIG SG-4

Total Exposure Time : Ha-70mins, SII-60mins, OIII-55mins
w Dark Frames, Bias Frames
process w CCD stack,PI, PS5

Autor: Vincent Vegabort

AstroPhotography of the day by SPONLI
5 January 2014

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NGC 2174: Monkey Head Nebula in Orion

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NGC 2174
 (also known as Monkey Head Nebula) is an H II emission nebula located in the constellation Orion and is associated with the open star cluster NGC 2175. It is thought to be located about 6,400 light-years away from Earth. The nebula may have formed through hierarchical collapse.

Imaging telescopes or lenses: SkyWatcher Equinox 80 ED APO
Imaging cameras: Atik 383L+ mono
Mounts: Celestron CGEM
Guiding telescopes or lenses: William Optics Guidescope 50mm
Guiding cameras: QHYCCD QHY5L-II Mono
Focal reducers: TeleVue TRF-2008 0.8x
Software: PHD, Cyanogen Maxim DL Pro 5, Photoshop CS6
Filters: Baader Planetarium Ha 7nm 2″, Baader Planetarium SII 8nm 2″, Baader Planetarium OIII 8.5nm 2″
Accessories: Starlight Xpress SX USB Filter Wheel 5×2″
Dates: Dec. 26, 2013
Baader Planetarium Ha 7nm 2″: 10×600″ -15C bin 1×1
Baader Planetarium OIII 8.5nm 2″: 5×900″ -15C bin 1×1
Baader Planetarium SII 8nm 2″: 5×900″ -15C bin 1×1
Integration: 4.2 hours

Autor: Dan Kordella

AstroPhotography of the day by SPONLI
2 January 2014

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NGC 7635: the Bubble nebula

NGC 7635 is a H II region emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52. The “bubble” is created by the stellar windfrom a massive hot, 8.7 magnitude young central star, the 15 ± 5 M SAO 20575 (BD+60 2522). The nebula is near a giantmolecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow.

Imaging telescopes or lenses: TEC 200 ED
Imaging cameras: Atik 383L+
Mounts: Bauer D 100
Focal reducers: Riccardi Big 0.75x reducer/flattener
Filters: Baader Planetarium L,R,G,B,Ha,OIII
Dates: Oct. 2, 2012
Baader Planetarium L,R,G,B,Ha,OIII: 78×600″
Baader Planetarium L,R,G,B,Ha,OIII: 52×900″
Integration: 26.0 hours

Autor: Stefan Seip

AstroPhotography of the day by SPONLI
1 January 2014

We select the best works of amateur astrophotographers with details of equipment, shooting processing etc.

The Horsehead Nebula

IC434 & B33 Horsehead Nebula Close-up with NGC-2023

Image Credit & Copyright: John Chumack
The Horsehead Nebula is one of the most famous nebulae on the sky. It is visible as the dark indentation to the red emission nebula in the center of the above photograph. The horse-head feature is dark because it is really an opaque dust cloud that lies in front of the bright red emission nebula. Like clouds in Earth’s atmosphere, this cosmic cloud has assumed a recognizable shape by chance. After many thousands of years, the internal motions of the cloud will alter its appearance. The emission nebula’s red color is caused by electrons recombining with protons to form hydrogen atoms. Also visible at the bottom left of the picture is a greenishreflection nebulae that preferentially reflects the blue light from nearby stars.

NASA APOD 31-dec-13