Tag Archives: NGC 2244

NGC 2244

NGC 2244 (also known as Caldwell 50) is an open cluster in the Rosette Nebula, which is located in the constellation Monoceros. This cluster has several O-type stars, super hot stars that generate large amounts of radiation and stellar wind.

The age of this cluster has been estimated to be less than 5 million years and its two brightest stars are HD 46223 of spectral classO4V, 400,000 times brighter than the Sun, and approximately 50 times more massive, and HD 46150, whose spectral type is O5V, has a luminosity 450,000 time larger than that of our star, and is up to 60 times more massive, but it may actually be a double star.

Imaging telescopes or lenses: Skywatcher Black Diamond 150/750 Newton
Imaging cameras: Canon EOS 1000D EOS 1000D , EOS1000Da
Mounts: EQ5 EQ-5 pro goto
Guiding telescopes or lenses: 80mm f5 Orion Shorty Autoguide scope Orion Short Tube 80mm/400FL/F5.0
Guiding cameras: Orion Starshoot Autoguider
Focal reducers: Baader MPCC Mark III Baader MPCC Mark lll
Software: DSS, PS, APT, Lightroom deepskystacker
Resolution: 1642×1080
Dates: Sept. 27, 2014
Frames: 21×120″ ISO800
Integration: 0.7 hours
Darks: ~10
Flats: ~22
Bias: ~30
Avg. Moon age: 2.56 days
Avg. Moon phase: 7.26%
Bortle Dark-Sky Scale: 1.00
RA center: 98.021 degrees
DEC center: 4.851 degrees
Pixel scale: 3.757 arcsec/pixel
Orientation: 101.185 degrees
Field radius: 1.026 degrees

Аuthor: galaad16, 20.10.2014

Rosette Nebula

The cluster and nebula lie at a distance of some 5,200 light-years from Earth (although estimates of the distance vary considerably, down to 4,900 light-years.) and measure roughly 130 light years in diameter. The radiation from the young stars excite the atoms in the nebula, causing them to emit radiation themselves producing the emission nebula we see. Themass of the nebula is estimated to be around 10,000 solar masses.

It is believed that stellar winds from a group of O and B stars are exerting pressure on interstellar clouds to cause compression, followed by star formation in the nebula. This star formation is currently still ongoing.

Imaging telescopes or lenses: Canon EF 200 f/2.8 L USM II
Imaging cameras: Canon 60Da
Mounts: Celestron Advanced VX
Guiding telescopes or lenses: Orion 50mm Helical Guider
Guiding cameras: Orion Star Shoot autoguider
Software: Adobe Photoshop CS4, Deep Sky Stacker
Filters: Astronomik H-alpha 6nm EOS Clip filter
Dates: Dec. 25, 2013, Dec. 26, 2013
Frames:
57×300″ ISO400
Astronomik H-alpha 6nm EOS Clip filter: 88×300″ ISO1600
Integration: 12.1 hours
Darks: ~30
Flats: ~40
Flat darks: ~40

Author: Chad Quandt
AstroPhotography of the day by SPONLI 06 June 2014

In the Heart of the Rosette Nebula

Image Credit & Copyright: Don GoldmanIn the heart of the Rosette Nebula lies a bright open cluster of stars that lights up the nebula. The stars of NGC 2244 formed from the surrounding gas only a few million years ago. The above image taken in January using multiple exposures and very specific colors of Sulfur (shaded red), Hydrogen (green), and Oxygen (blue), captures the central region in tremendous detail. A hot wind of particles streams away from the cluster stars and contributes to an already complex menagerie of gas and dust filaments while slowly evacuating the cluster center. The Rosette Nebula’s center measures about 50 light-years across, lies about 4,500 light-years away, and is visible with binoculars towards the constellation of the Unicorn (Monoceros).

NASA APOD 11-mar-2014

Rosette Nebula and open cluster NGC 2244

The Rosette Nebula (also known as Caldwell 49) is a large, circular H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open cluster NGC 2244 (Caldwell 50) is closely associated with the nebulosity, the starsof the cluster having been formed from the nebula’s matter.
The cluster of stars is visible in binoculars and quite well seen in small telescopes while the nebula itself is more difficult to spot visually and requires a telescope with a low magnification. A dark site is a must to see it. Photographically the Rosette Nebula is easier to record and it is the only way to record the red color which is not seen visually.

Imaging telescopes or lenses: Orion ED80
Imaging cameras: SBIG ST-10 XME
Mounts: Mountain Instruments MI-250
Guiding telescopes or lenses: Astro-Tech 8x50mm Finder Guidescope
Guiding cameras: Starlight Xpress Lodestar
Software: Main Sequence Software Sequence Generator Pro, PHD guiding, PixInsight
Filters: Astrodon Ha 5nm, Astrodon SII 5nm
Accessories: Astro-Tech 2″ Field Flattener, Shoestring Astronomy FCUSB, SBIG CFW 10, Moonlite CF 2″ focuser with high resolution stepper
Dates: April 7, 2013
Frames:
Astrodon Ha 5nm: 4×600″ -30C bin 1×1
Astrodon SII 5nm: 4×600″ -30C bin 1×1
Integration: 1.3 hours
Darks: ~20
Flats: ~20
Bias: ~200

Autor: Chris Madson

AstroPhotography of the day by SPONLI

13 February 2014

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

NGC 2237: The Rosette Nebula

The Rosette Nebula (also known as Caldwell 49) is a large, circular H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open cluster NGC 2244 (Caldwell 50) is closely associated with the nebulosity, the starsof the cluster having been formed from the nebula’s matter. A survey of the nebula with the Chandra X-ray Observatory in 2001 has revealed the presence of very hot, young stars at the core of the Rosette Nebula. These stars have heated the surrounding gas to a temperature in the order of 6 million kelvins causing them to emit copious amounts of X-rays.

Imaging telescopes or lenses: Takahashi TOA-130
Imaging cameras: FLI ML 11002
Mounts: Astro-Physics Mach 1 GTO
Guiding telescopes or lenses: Takahashi TOA-130
Guiding cameras: Starlight Xpress Lodestar
Software: Adobe Photoshop CS6, Main Sequence Software Sequence Generator Pro, CCDStack2
Filters: Astrodon Narrowband Set (Ha OIII SII)
Accessories: 67 Field Flattener
Dates: Jan. 11, 2014
Frames: 58×1200″

Autor: Mark Striebeck

AstroPhotography of the day by SPONLI

30 January 2014

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

NGC 2244: Rosette Nebula HaLRGB

The Rosette Nebula is a large, circular H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open cluster NGC 2244 (Caldwell 50) is closely associated with the nebulosity, the starsof the cluster having been formed from the nebula’s matter.
The cluster and nebula lie at a distance of some 5,200 light-years from Earth (although estimates of the distance vary considerably, down to 4,900 light-years.) and measure roughly 130 light years in diameter. The radiation from the young stars excite the atoms in the nebula, causing them to emit radiation themselves producing the emission nebula we see. The mass of the nebula is estimated to be around 10,000 solar masses.

Imaging telescopes or lenses: PlaneWave Instruments Planewave 20″ CDK
Mounts: Planewave Instruments Ascension 200HR
Resolution: 3056×3056
Dates: Dec. 5, 2013
Frames:
Astrodon Red G2E: 3×600″ bin 1×1
Astrodon Blue: 3×600″ bin 1×1
Astrodon Green: 3×600″ bin 1×1
Astrodon Ha: 9×600″ bin 1×1
Astrodon Luminance: 6×600″ bin 1×1

Autor: Federico Pelliccia

AstroPhotography of the day by SPONLI
December 07, 2013
We select the best works of amateur astrophotographers with details of equipment, shooting processing etc.

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