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http://andersson-design.s3.amazonaws.co ... 048_v1.jpg
[attachment=0]7822.jpg[/attachment]

• NGC7822

The color palette is ordered by atomic weight with Ha = red, OIII = orange, NII = green with a hint of blue and SII = blue. White balance was set where Ha, NII and SII reached their maximal values though, of course, Ha is by far the strongest signal.

TEC140 at f/7 plus an FLI ML16803 camera. Astrodon 3nm narrowband filters.
Ha = 8 x 1500 secs
OIII, NII & SII = 18 x 1500 secs
R, G & B = 8 x 200 secs

Bob.

Lightning, The Milky Way and the lake.
Cochiti Lake. Central New Mexico
Nikon D600 Samyang 14mm f/2.8
15 second exposure at ISO3200
http://www.facebook.com/bspencerphoto
http://www.brianspencer.com/mwlake.jpg
[attachment=0]bspencer.jpg[/attachment]

http://www.abrelosojos.nl
WeBo 1 - Planetary Nebula in Cassiopeia
Copyright: Andre van Zegveld (Severe crop)
WeBo 1
Planetary Nebula in Cassiopeia (The small blue oval in quadrant below left)
The small, OIII rich planetary nebula WeBo 1 (PN G135.6+01.0), is an elongated blue oval near the "V" of the heart nebula.
Visibility is greatly enhanced by the OIII filter. This has been called a Barium Star surrounded by a young planetary nebula.
Discovered by Webbink and Bond, It is morphologically extremely similar to SuWt 2, in being an almost mathematically perfect ellipse. Recent observations at KPNO reveal that its central star is also a close binary, with a sinusoidal light curve and a period of approximately 5 days.

30 hours on TEC-140 + Astrodon 3nm Ha, SII, OIII filters

Full size image: http://www.abrelosojos.nl/gallery/nebul ... t-full.jpg

NGC 6902 / NGC 6902B / IC 4946 - Galaxy Group in Sagittarius
http://www.rolfolsenastrophotography.com
Copyright: Rolf Wahl Olsen Link to large image

In the far south-eastern corner of Sagittarius, a constellation otherwise known for its spectacular highlights near the crowded Milky Way centre, lies the very rarely imaged galaxy NGC 6902 and a couple of its neighbours. Despite its beautiful and elegant appearance there is very little information about this galaxy to be found anywhere.
It contains a bright central ring and possibly also an elusive inner bar. The spiral arms are quite faint despite almost 17 hours of exposure, which is indicative of a rather weak population of O type stars. The arms also have a knotted appearance, perhaps due to the presence of brighter HII regions located within them.
The galaxy lies approximately 33 million light years away and was discovered by John Herschel.
A number of other galaxies can be seen scattered across the field of view, including the smaller face-on spiral NGC 6902B to the upper left. At the top of the frame lies edge-on galaxy IC 4649 with some traces of obscuring dust and a hint of a bar structure surrounding its core.
And far in the background countless distant galaxy groupings can be seen as small fuzzy yellowish dots throughout the image.

Image details:
Date: 29th July, 5th, 6th, 7th, 8th and 9th August 2013
Exposure: LRGB: 645:152:122:93 mins, total 16 hours 52 mins @ -30C
Telescope: 10" Serrurier Truss Newtonian f/5
Camera: QSI 683wsg with Lodestar guider
Filters: Astrodon LRGB E-Series Gen 2
Taken from my observatory in Auckland, New Zealand

RS Puppis
http://www.flickr.com/photos/stephen63/ ... otostream/
RS Puppis (or RS Pup) is a Cepheid variable star in the constellation of Puppis.
Because it is located in a large nebula, astronomers using the ESO’s New Technology Telescope at La Silla Observatory, Chile have been able to measure its distance by strictly geometric analysis of light echos from particles in the nebula, determining it to be 6500 ± 90 light years from Earth, the most accurate measurement achieved for any Cepheid as of early 2008-Wiki

Hubble Legacy Archive Data set:
ACS/WFC 435W/606W Single exposure
Synthetic Green

NGC 6357 & Pismis 24 in Scorpius
http://www.astropilar.com.ar/nebulosas/NGC6357_1.html
Copyright: Ezequiel Bellocchio Best regards,
Ezequiel.

Bright Green Meteor - I caught this on 9-1 while shooting timelapse. I also caught it on a second camera with a 14mm wide angle lens.
http://www.facebook.com/dakotalapse

The Pelican Nebula in Hydrogen-Alpha by Danny Flippo, on Flickr

Barnard 150. Carlo Rocchi (Italy)

Soap bubble nebula - PN G75.5+1.7
http://www.stefanofocosi.altervista.org ... _2013.html
Copyright: Stefano Focosi

NGC 281, Pacman nebula
Copyright: Predrag Knezevic, Croatia



Details: http://astrob.in/54630/

M27 - The Dumbbell Nebula in Vulpecula

Hybrid Composition of Natural Colours (LRGB) and Narrow Bands (SII-Ha-OIII) of M27. This mix of different spectral contributions allows a better perception and visibility of the nebula's details and of its gases distribution.

Authors: M.Angelini - F.Antonucci - F.Tagliani ADARA-ASTROBRALLO
http://www.astrobrallo.com
Image details: http://www.astrobrallo.com/gallery/inde ... N-Finale-M
Full-Res: http://www.astrobrallo.com/gallery/var/ ... 1378161523

NGC 6992 - The Eastern Part of the Cygnus Loop

Hybrid Composition of the Eastern Part of the Veil Nebula, a beautiful supernova remnant in the Cygnus constellation

Authors: F.Antonucci - M.Angelini - F.Tagliani ADARA ASTROBRALLO
http://www.astrobrallo.com
Image Details: http://www.astrobrallo.com/gallery/inde ... /S2HaO3-14
Full-Res: http://www.astrobrallo.com/gallery/var/ ... 1378161523

NGC2070 - The Tarantula Nebula
Higher res @
http://westcoastpics23.blogspot.com.au/?view=flipcard

Subject: IC5146 Cocoon Nebula (LRGB image)
Copyrights: James Collins

Larger image URL http://jimstar11.com/IC5146cc.jpg
Web Site: Meadow View Observatory
http://jimstar11.com/

NGC 2070 (30 Doradus, The Tarantula Nebula) in Dorado

http://www.irida-observatory.org

Copyright: [url=mailto://info@irida-observatory.org]Velimir Popov, Emil Ivanov[/url]

The Tarantula Nebula (also known as 30 Doradus, or NGC 2070) is an H II region in the Large Magellanic Cloud (LMC). The Tarantula Nebula has an apparent magnitude of 8. Considering its distance of about 49 kpc (160 000 light years), this is an extremely luminous non-stellar object. Its luminosity is so great that if it were as close to Earth as the Orion Nebula, the Tarantula Nebula would cast shadows. In fact, it is the most active starburst region known in the Local Group of galaxies. It is also the largest such region in the Local Group with an estimated diameter of 200 pc. The nebula resides on the leading edge of the LMC, where ram pressure stripping, and the compression of the interstellar medium likely resulting from this, is at a maximum. At its core lies the compact star cluster R136 (approximate diameter 35 light years) that produces most of the energy that makes the nebula visible. The estimated mass of the cluster is 450 000 solar masses, suggesting it will likely become a globular cluster in the future.

The images was taken in Namibia on May 2013 during our Southern Sky expedition.

NGC 2070 - HaLRGB: Annotated image: Mousehover image NGC 2070 - Ha: Higher resolution, and more images and information is avaliable NGC 2070 ...

Thank you for looking ...

http://www.irida-observatory.org

Copyright: [url=mailto://info@irida-observatory.org]Velimir Popov, Emil Ivanov[/url]

Starry cloudy night over urban light

Zegveld wrote:http://www.abrelosojos.nl
WeBo 1 - Planetary Nebula in Cassiopeia
Copyright: Andre van Zegveld
http://www.abrelosojos.nl/gallery/nebul ... Nebula.jpg
(Severe crop)
WeBo 1
Planetary Nebula in Cassiopeia (The small blue oval in quadrant below left)
The small, OIII rich planetary nebula WeBo 1 (PN G135.6+01.0), is an elongated blue oval near the "V" of the heart nebula.
Visibility is greatly enhanced by the OIII filter. This has been called a Barium Star surrounded by a young planetary nebula.
Discovered by Webbink and Bond, It is morphologically extremely similar to SuWt 2, in being an almost mathematically perfect ellipse. Recent observations at KPNO reveal that its central star is also a close binary, with a sinusoidal light curve and a period of approximately 5 days.

30 hours on TEC-140 + Astrodon 3nm Ha, SII, OIII filters

Full size image: http://www.abrelosojos.nl/gallery/nebul ... t-full.jpg

Wow it's rare to see a closeup of this planetary nebula that was discovered in 1996! It is visible in many widefields of the Heart Nebula.

SkyViking wrote:NGC 6902 / NGC 6902B / IC 4946 - Galaxy Group in Sagittarius
http://www.rolfolsenastrophotography.com
Copyright: Rolf Wahl Olsen
http://www.rolfolsenastrophotography.co ... 454-X2.jpg

Link to large image

In the far south-eastern corner of Sagittarius, a constellation otherwise known for its spectacular highlights near the crowded Milky Way centre, lies the very rarely imaged galaxy NGC 6902 and a couple of its neighbours. Despite its beautiful and elegant appearance there is very little information about this galaxy to be found anywhere.
It contains a bright central ring and possibly also an elusive inner bar. The spiral arms are quite faint despite almost 17 hours of exposure, which is indicative of a rather weak population of O type stars. The arms also have a knotted appearance, perhaps due to the presence of brighter HII regions located within them.
The galaxy lies approximately 33 million light years away and was discovered by John Herschel.
A number of other galaxies can be seen scattered across the field of view, including the smaller face-on spiral NGC 6902B to the upper left. At the top of the frame lies edge-on galaxy IC 4649 with some traces of obscuring dust and a hint of a bar structure surrounding its core.
And far in the background countless distant galaxy groupings can be seen as small fuzzy yellowish dots throughout the image.

Image details:
Date: 29th July, 5th, 6th, 7th, 8th and 9th August 2013
Exposure: LRGB: 645:152:122:93 mins, total 16 hours 52 mins @ -30C
Telescope: 10" Serrurier Truss Newtonian f/5
Camera: QSI 683wsg with Lodestar guider
Filters: Astrodon LRGB E-Series Gen 2
Taken from my observatory in Auckland, New Zealand

Amazing image of an equally amazing galaxy! I don't know how there was never an AAO image of this one. Sagittarius has everything, it is home to cometary globules, a Wolf Rayet nebula, a few supernova remnants as well as ultra obscure globular clusters. More to it then the common stuff.

stephen63 wrote:RS Puppis
http://www.flickr.com/photos/stephen63/ ... otostream/
RS Puppis (or RS Pup) is a Cepheid variable star in the constellation of Puppis.
Because it is located in a large nebula, astronomers using the ESO’s New Technology Telescope at La Silla Observatory, Chile have been able to measure its distance by strictly geometric analysis of light echos from particles in the nebula, determining it to be 6500 ± 90 light years from Earth, the most accurate measurement achieved for any Cepheid as of early 2008-Wiki

Hubble Legacy Archive Data set:
ACS/WFC 435W/606W Single exposure
Synthetic Green
http://farm4.staticflickr.com/3778/9642 ... e859_b.jpg

Wow that looks epic!! The nebula is also catalogued as vdBH6, the only reflection nebula associated with a Cepheid variable. Lots of many interesting deep sky objects in the southern sky.

elettrorider wrote:Soap bubble nebula - PN G75.5+1.7
http://www.stefanofocosi.altervista.org ... _2013.html
Copyright: Stefano Focosi
http://stefanofocosi.altervista.org/ast ... ap400K.jpg

That is an excellent image of a very strange nebula, it also has lots of OIII emission.

ViliMax wrote:NGC 2070 (30 Doradus, The Tarantula Nebula) in Dorado

http://www.irida-observatory.org

Copyright: [url=mailto://info@irida-observatory.org]Velimir Popov, Emil Ivanov[/url]

The Tarantula Nebula (also known as 30 Doradus, or NGC 2070) is an H II region in the Large Magellanic Cloud (LMC). The Tarantula Nebula has an apparent magnitude of 8. Considering its distance of about 49 kpc (160 000 light years), this is an extremely luminous non-stellar object. Its luminosity is so great that if it were as close to Earth as the Orion Nebula, the Tarantula Nebula would cast shadows. In fact, it is the most active starburst region known in the Local Group of galaxies. It is also the largest such region in the Local Group with an estimated diameter of 200 pc. The nebula resides on the leading edge of the LMC, where ram pressure stripping, and the compression of the interstellar medium likely resulting from this, is at a maximum. At its core lies the compact star cluster R136 (approximate diameter 35 light years) that produces most of the energy that makes the nebula visible. The estimated mass of the cluster is 450 000 solar masses, suggesting it will likely become a globular cluster in the future.

The images was taken in Namibia on May 2013 during our Southern Sky expedition.

NGC 2070 - HaLRGB:
http://www.irida-observatory.org/Namibi ... terisk.jpg

Annotated image:
http://www.irida-observatory.org/Namibi ... terisk.jpg

Mousehover image
http://www.irida-observatory.org/Namibi ... terisk.jpg
http://www.irida-observatory.org/Namibi ... terisk.jpg

NGC 2070 - Ha:
http://www.irida-observatory.org/Namibi ... terisk.jpg

Higher resolution, and more images and information is avaliable NGC 2070 ...

Thank you for looking ...

http://www.irida-observatory.org

Copyright: [url=mailto://info@irida-observatory.org]Velimir Popov, Emil Ivanov[/url]

Although this region has been imaged to death, I never tire of seeing this crazy complex of nebulae and clusters all entangled together.

Animation Nova Delphinus 2013

17 August - 2 September

We see the decline of the band Blue August 17 to September 2 in that it almost disappeared and there is only the red and infrared



Data capture and large size

http://www.astromodelismo.es/Web%20Astr ... /index.htm


Copyright: Máximo Ruiz
http://www.astromodelismo.es/index.htm

Cross-posting a batch of the better ones I've submitted at Flickr recently. More information on individual works is available at the Flickr page by clicking on them.

NGC 1999
Credit: Hubble Legacy Archive, processing by Judy Schmidt

NGC 1999 by geckzilla, on Flickr

Transforming Galaxy
Credit: Hubble Legacy Archive, processing by Judy Schmidt

Transforming Galaxy Redo by geckzilla, on Flickr

Blinking Eye Nebula
Credit: Hubble Legacy Archive, processing by Judy Schmidt

Blinking Eye Nebula by geckzilla, on Flickr