Tag Archives: Horsehead Nebula

Horsehead Nebula

The Horsehead Nebula (also known as Barnard 33 in emission nebula IC 434) is a dark nebula in the constellation Orion.^[1] The nebula is located just to the south of the star Alnitak, which is farthest east on Orion’s Belt, and is part of the much larger Orion Molecular Cloud Complex. The nebula was first recorded in 1888 by Scottish astronomer Williamina Fleming on photographic plate B2312 taken at the Harvard College Observatory. The Horsehead Nebula is approximately 1500 light years from Earth. It is one of the most identifiable nebulae because of the shape of its swirling cloud of dark dust and gases, which bears some resemblance to ahorse’s head when viewed from Earth.

Imaging telescopes or lenses: William Optics Zenithstar ED 70 William Optics
Imaging cameras: Canon EOS 400D mod.Baader
Mounts: Skywatcher EQ-3 – 2
Focal reducers: TV 0,8x
Software: Gimp, DSS, Fitswork
Filters: Baader Ha OIII SII Halpha
Resolution: 848×594
Dates: Oct. 30, 2014
Frames: 1×300″
Integration: 0.1 hours
Avg. Moon age: 6.19 days
Avg. Moon phase: 37.43%
RA center: 85.068 degrees
DEC center: -2.329 degrees
Pixel scale: 11.093 arcsec/pixel
Orientation: 168.055 degrees
Field radius: 1.595 degrees

Аuthor: MarcinSn

Аstrophotography of the day of SPONLI, 21.11.2014

Horsehead Nebula

The Horsehead Nebula (also known as Barnard 33 in emission nebula IC 434) is a dark nebula in the constellation Orion. The nebula is located just to the south of the star Alnitak, which is farthest east on Orion’s Belt, and is part of the much larger Orion Molecular Cloud Complex. The nebula was first recorded in 1888 by Scottish astronomer Williamina Fleming on photographic plate B2312 taken at the Harvard College Observatory. The Horsehead Nebula is approximately 1500 light years from Earth. It is one of the most identifiable nebulae because of the shape of its swirling cloud of dark dust and gases, which bears some resemblance to ahorse’s head when viewed from Earth.

Imaging telescopes or lenses: Celestron EDGE HD 800
Imaging cameras: Canon EOS 1100D modificata
Mounts: Skywatcher AZ-EQ6 GT
Guiding telescopes or lenses: Celestron EDGE HD 800
Guiding cameras: Meade DSI I Pro Mono
Filters: IDAS LPS D1
Accessories: Celestron Radial Guider, Shoestring Astronomy GPUSB
Resolution: 1024×670
Dates: Oct. 29, 2014
Locations: Osservatorio Felsina
Frames: 17×600″ ISO1600
Integration: 2.8 hours
Darks: ~10
Flats: ~17
Flat darks: ~17
Bias: ~17
Avg. Moon age: 5.14 days
Avg. Moon phase: 26.99%
RA center: 85.271 degrees
DEC center: -2.463 degrees
Pixel scale: 2.059 arcsec/pixel
Orientation: 83.679 degrees
Field radius: 0.350 degrees

Аuthor: DavideAlboresiLenzi

Astrophotography of the day of SPONLI 03.11.2014

Nebulae in Orion

The Horsehead Nebula (also known as Barnard 33 in emission nebula IC 434) is a dark nebula in the constellation Orion. The nebula is located just to the south of the star Alnitak, which is farthest east on Orion’s Belt, and is part of the much larger Orion Molecular Cloud Complex.
The reflection nebula NGC 2023 is in the constellation Orion. It is one of the brightest sources of fluorescent molecular hydrogen, and at 4 light-years wide it is one of the largest in the sky. It is powered by the B star (B1.5) HD 37903, the most luminous member of a cluster of young stellar objects illuminating the front surface of the Lynds 1630 molecular cloud (Barnard 33) in Orion B.

The Flame Nebula, designated as NGC 2024 and Sh2-277, is an emission nebula in the constellation Orion. It is about 900 to 1,500light-years away. The bright star Alnitak (ζ Ori), the easternmost star in the Belt of Orion, shines energetic ultraviolet light into the Flame and this knocks electrons away from the great clouds of hydrogen gas that reside there.

Imaging telescopes or lenses: Takahashi TSA 102 f/8
Imaging cameras: Canon EOS 1000D / Rebel XS
Mounts: Takahashi EM-400 Temma2
Guiding telescopes or lenses: Lunatico EZG60
Guiding cameras: QHYCCD QHY5
Software: PHD guiding, PixInsight, Bahtinov Grabber
Filters: Astronomik CLS CCD clip in
Dates: Feb. 12, 2012
Frames: Astronomik CLS CCD clip in: 12×600″ ISO800
Integration: 2.0 hours
Darks: ~20
Flats: ~20
Bias: ~20

Author: Alberto Pisabarro
AstroPhotography of the day by SPONLI 15 Aug 2014

The Horsehead Nebula from Blue to Infrared

Image Credit & Copyright: Optical: Aldo Mottino & Carlos Colazo, OAC, Córdoba; Infrared: Hubble Legacy Archive

One of the most identifiable nebulae in the sky, the Horsehead Nebula in Orion, is part of a large, dark, molecular cloud. Also known as Barnard 33, the unusual shape was first discovered on a photographic plate in the late 1800s. The red glow originates from hydrogen gas predominantly behind the nebula, ionized by the nearby bright star Sigma Orionis. The darkness of the Horsehead is caused mostly by thick dust, although the lower part of the Horsehead’s neck casts a shadow to the left. Streams of gas leaving the nebula are funneled by a strong magnetic field. Bright spots in the Horsehead Nebula’s base are young stars just in the process of forming. Light takes about 1,500 years to reach us from the Horsehead Nebula. The above image is a digital combination of images taken in blue, green, red, and hydrogen-alpha light from the Argentina, and an image taken in infrared light by the orbiting Hubble Space Telescope.

APOD NASA 28-Jul-2014

Horsehead Nebula IC 434

The dark cloud of dust and gas is a region in the Orion Nebula where star formation is taking place. This stellar nursery, as it is known, can contain over 100 known organic and inorganic gases as well as dust consisting of large and complex organic molecules.

The red or pinkish glow originates from hydrogen gas predominantly behind the nebula, ionized by the nearby bright star Sigma Orionis. Magnetic fields channel the gases leaving the nebula into streams, shown as streaks in the background glow. A glowing strip of hydrogen gas marks the edge of the massive cloud and the densities of stars are noticeably different on either side.

The heavy concentrations of dust in the Horsehead Nebula region and neighbouring Orion Nebula are localized, resulting in alternating sections of nearly complete opacity and transparency. The darkness of the Horsehead is caused mostly by thick dust blocking the light of stars behind it. The lower part of the Horsehead’s neck casts a shadow to the left. The visible dark nebula emerging from the gaseous complex is an active site of the formation of “low-mass” stars. Bright spots in the Horsehead Nebula’s base are young stars just in the process of forming.

Imaging telescopes or lenses: Sky-Watcher Newton 8″
Imaging cameras: Canon EOS 550D / Rebel T2i
Mounts: Sky-Watcher HEQ5
Focal reducers: Sky-Watcher Coma corrector
Software: DeepSkyStacker, PHD guiding, photoshop
Dates: Oct. 20, 2012
Frames: 20×600″
Integration: 3.3 hours

Author: Ivan Jevremovic
AstroPhotography of the day by SPONLI 09 July 2014

Horsehead and Flame Nebula

Imaging telescopes or lenses: Takahashi Epsilon 180
Imaging cameras: SBIG ST-10 XME
Mounts: Astro-Physics 1200 GTO
Software: Adobe Photoshop CC
Filters: Astrodon RGB filter set, Astrodon H-alpha 3nm narrowband filter
Dates: Oct. 10, 2010
Frames:
Astrodon H-alpha 3nm narrowband filter: 18×600″
Astrodon RGB filter set: 36×600″
Integration: 9.0 hours

Autor: Dean Salman

AstroPhotography of the day by SPONLI

09 February 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
Explanation: 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

Nebulas in Hydrogen Alpha

@ Vincent Vegabort

: Camera : Astro60D (cooled at-16C) Telescope/Lens : Takahashi FSQ-85ED w 0.73x reducer (327mm f/3.8 ) Filter : Astronomik 6nm Ha ISO : 3200 Tracking Mount : Takahashi EM-11 Autoguide : SBIG SG-4 Total Exposure Time : 8mins x 36frames w Dark Frames, Bias Frames process w DSS,PI, PS5

: Camera : Astro60D (cooled at-20C) Telescope/Lens : Takahashi FSQ-85ED (450mm f/5.3) Filter : Astronomik 6nm Ha EOS clip-on ISO : 3200 Tracking Mount : Takahashi EM-11 Autoguide : SBIG SG-4 Total Exposure Time : 8mins x 23frames w Dark Frames, Bias Frames process w DSS,PI, PS5

: Camera : SBIG STF-8300M (cooled at-10C) Telescope/Lens : Microtech RC6 with 0.75X reducer (1,032mm f/6.7) Filter : Astrodon 5nm Ha Tracking Mount : Takahashi EM-11 Autoguide : SBIG OAG with ST-i set Total Exposure Time : 5mins X 11 w Dark Frames, Bias Frames process w CCD stack,PI, PS5

: Camera : SBIG STF-8300M (cooled at-5C) Telescope/Lens : Takahashi FSQ-85ED (450mm f/5.3) Filter : Astrodon 5nm Ha Tracking Mount : Takahashi EM-11 Autoguide : SBIG SG-4 Total Exposure Time : 5mins x 13 w Dark Frames, Bias Frames process w CCD stack,PI, PS5

: Camera : SBIG STF-8300M (cooled at-10C) Telescope/Lens : Microtech RC6 with 0.75X reducer (1,032mm f/6.7) Filter : Astrodon 5nm Ha Tracking Mount : Takahashi EM-11 Autoguide : SBIG OAG with ST-i set Total Exposure Time : 10mins X 17 w Dark Frames, Bias Frames process w CCD stack,PI, PS5

: Camera : Astro60D (cooled at-16C) Telescope/Lens : Takahashi FSQ-85ED (450mm f/5.3) Filter : Astronomik 6nm Ha ISO : 1600 Tracking Mount : Takahashi EM-11 Autoguide : SBIG SG-4 Total Exposure Time : 8 mins X 11 frames w Dark Frames, Bias Frames process w DSS,PS5

Alnitak, Alnilam, Mintaka

Image Credit & Copyright: Rogelio Bernal Andreo (Deep Sky Colors)
Alnitak, Alnilam, and Mintaka, are the bright bluish stars from east to west (lower right to upper left) along the diagonal in this gorgeous cosmic vista. Otherwise known as the Belt of Orion, these three blue supergiant stars are hotter and much more massive than the Sun. They lie about 1,500 light-years away, born of Orion’s well-studied interstellar clouds. In fact, clouds of gas and dust adrift in this region have intriguing and some surprisingly familiar shapes, including the dark Horsehead Nebula and Flame Nebula near Alnitak at the lower right. The famous Orion Nebula itself is off the right edge of this colorful star field. The well-framed, wide-field telescopic image spans about 4 degrees on the sky.
NASA APOD 12 December 2013

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