Found images: 2017 June

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Re: Found images: 2017 June

Postby starsurfer » Mon Jun 19, 2017 8:48 am

Menzel 1
http://www.chart32.de/index.php/component/k2/item/214
Copyright: CHART32
Processing: Johannes Schedler

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HEIC: Surveying the Cosmos (ESO 486-21)

Postby bystander » Mon Jun 19, 2017 12:54 pm

Surveying the Cosmos
ESA Hubble Picture of the Week | 2017 Jun 19

The object in the middle of this image, sitting alone within a star-studded cosmos, is a galaxy known as ESO 486-21. ESO 486-21 is a spiral galaxy — albeit with a somewhat irregular and ill-defined structure — located some 30 million light-years from Earth.

The NASA/ESA Hubble Space Telescope observed this object while performing a survey — the Legacy ExtraGalactic UV Survey (LEGUS) — of 50 nearby star-forming galaxies. The LEGUS sample was selected to cover a diverse range of galactic morphologies, star formation rates, galaxy masses, and more. Astronomers use such data to understand how stars form and evolve within clusters, and how these processes affect both their home galaxy and the wider Universe. ESO 486-21 is an ideal candidate for inclusion in such a survey as it is known to be in the process of forming new stars, which are created when large clouds of gas and dust (seen here in pink) within the galaxy crumple inwards upon themselves.

LEGUS made use of Hubble’s Wide Field Camera 3 (WFC3) and Advanced Camera for Surveys (ACS). The WFC3 obtained detailed observations of the target objects while the ACS obtained what are known as parallel fields — instead of leaving ACS idle, it was instead trained on a small patch of sky just offset from the target field itself, allowing it to gather additional valuable information while the primary target was being observed by WFC3. Parallel fields played an important role in Hubble’s Frontier Fields programme, which used the magnifying power of large galaxy clusters (via a phenomenon known as gravitational lensing) to explore objects in the distant Universe.
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ESO: Not the Mother of Meteorites (6 Hebe)

Postby bystander » Mon Jun 19, 2017 1:32 pm

Not the Mother of Meteorites
ESO Picture of the Week | 2017 Jun 19

The region between Mars and Jupiter is teeming with rocky worlds called asteroids. This asteroid belt is estimated to contain millions of small rocky bodies, and between 1.1 and 1.9 million larger ones spanning over one kilometre across. Small fragments of these bodies often fall to Earth as meteorites. Interestingly, 34% of all meteorites found on Earth are of one particular type: H-chondrites. These are thought to have originated from a common parent body — and one potential suspect is the asteroid 6 Hebe, shown here.

Approximately 186 kilometres in diameter and named for the Greek goddess of youth, 6 Hebe was the sixth asteroid ever to be discovered. These images were taken during a study of the mini-world using the SPHERE instrument on ESO’s Very Large Telescope, which aimed to test the idea that 6 Hebe is the source of H-chondrites.

Astronomers modelled the spin and 3D shape of 6 Hebe as reconstructed from the observations, and used their 3D model to determine the volume of the largest depression on 6 Hebe — likely an impact crater from a collision that could have created numerous daughter meteorites. However, the volume of the depression is five times smaller than the total volume of nearby asteroid families with H-chondrite composition, which suggests that 6 Hebe is not the most likely source of H-chondrites after all.

3D shape of asteroid (6) Hebe from VLT/SPHERE imaging:
Implications for the origin of ordinary H chondrites
- M. Marsset et al
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Re: Found images: 2017 June

Postby starsurfer » Tue Jun 20, 2017 5:49 am

Berkeley 54
http://www.astrophoton.com/berkeley054.htm
Copyright: Bernhard Hubl
berkeley54.jpg
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Re: Found images: 2017 June

Postby starsurfer » Thu Jun 22, 2017 7:37 am

LBN 1022
http://www.karelteuwen.be/photo_page.php?img=438&album=15
Copyright: Karel Teuwen
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Re: Found images: 2017 June

Postby starsurfer » Thu Jun 22, 2017 7:38 am


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Re: Found images: 2017 June

Postby starsurfer » Fri Jun 23, 2017 10:13 am

N70
http://www.astrobin.com/240670/0/
Copyright: Ray Johnson
39a87bbbf9e73a14ff922350f266fba3.1824x0.jpg
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Re: Found images: 2017 June

Postby starsurfer » Sat Jun 24, 2017 8:46 am

Terzan 1
http://www.spacetelescope.org/images/potw1550a/
Copyright: NASA and ESA
Acknowledgement: Judy Schmidt
potw1550a.jpg
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Re: Found images: 2017 June

Postby starsurfer » Sun Jun 25, 2017 10:14 am

NGC 7331
http://astro-koop.de/?attachment_id=1809
Copyright: Stefan Heutz, Wolfgang Ries and Michael Breite

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ESO: Betelgeuse captured by ALMA

Postby bystander » Mon Jun 26, 2017 2:01 pm

Betelgeuse captured by ALMA
ESO Picture of the Week | 2017 Jun 26

This orange blob shows the nearby star Betelgeuse, as seen by the Atacama Large Millimeter/submillimeter Array (ALMA). This is the first time that ALMA has ever observed the surface of a star and this first attempt has resulted in the highest-resolution image of Betelgeuse available.

Betelgeuse is one of the largest stars currently known — with a radius around 1400 times larger than the Sun’s in the millimeter continuum. About 600 light-years away in the constellation of Orion (The Hunter), the red supergiant burns brightly, causing it to have only a short life expectancy. The star is just about eight million years old, but is already on the verge of becoming a supernova. When that happens, the resulting explosion will be visible from Earth, even in broad daylight.

The star has been observed in many other wavelengths, particularly in the visible, infrared, and ultraviolet. Using ESO’s Very Large Telescope astronomers discovered a vast plume of gas almost as large as our Solar System. Astronomers have also found a gigantic bubble that boils away on Betelgeuse’s surface. These features help to explain how the star is shedding gas and dust at tremendous rates (eso0927, eso1121). In this picture, ALMA observes the hot gas of the lower chromosphere of Betelgeuse at sub-millimeter wavelengths — where localised increased temperatures explain why it is not symmetric. Scientifically, ALMA can help us to understand the extended atmospheres of these hot, blazing stars.

The inhomogeneous sub-millimeter atmosphere of Betelgeuse - E. O'Gorman et al
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HEIC: What’s in a name?

Postby bystander » Mon Jun 26, 2017 2:16 pm

What’s in a name?
ESA Hubble Picture of the Week | 2017 Jun 26

Not all galaxies have the luxury of possessing a simple moniker or quirky nickname. The subject of this NASA/ESA Hubble Space Telescope image was one of the unlucky ones, and goes by the rather unpoetic name of 2XMM J143450.5+033843.

Such a name may seem like a random jumble of numbers and letters, but like all galactic epithets it has a distinct meaning. This galaxy, for example, was detected and observed as part of the second X-ray sky survey performed by ESA’s XMM-Newton Observatory. Its celestial coordinates form the rest of the bulky name, following the “J”: a right ascension value of 14h 34m 50.5s (this can be likened to terrestrial longitude), and a declination of +03d 38m 43s (this can be likened to terrestrial latitude). The other fuzzy object in the frame was named in the same way — it is a bright galaxy named 2XMM J143448.3+033749.

2XMM J143450.5+033843 lies nearly 400 million light-years away from Earth. It is a Seyfert galaxy that is dominated by something known as an Active Galactic Nucleus — its core is thought to contain a supermassive black hole that is emitting huge amounts of radiation, pouring energetic X-rays out into the Universe.
Know the quiet place within your heart and touch the rainbow of possibility; be
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Postby KuriousGeorge » Mon Jun 26, 2017 3:07 pm

M92
Last edited by KuriousGeorge on Mon Jun 26, 2017 3:14 pm, edited 1 time in total.

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Re: Found images: 2017 June

Postby KuriousGeorge » Mon Jun 26, 2017 3:11 pm

M92, Copyright KG Observatory.

M92 is a globular cluster of stars in the northern constellation of Hercules. M92 is at a distance of about 26,700 light-years away from Earth.

Among the Milky Way population of globular clusters, M92 is among the brighter clusters in terms of absolute magnitude. It is also one of the oldest clusters.

Imaging telescope or lens: Celestron 8" EdgeHD
Imaging camera: QSI 660 WSG
Mount: Losmandy G-11
Guiding camera: Starlight Xpress Ultrastar
Software: PHD Guiding 2, PixInsight 1.8, Neat Image V7, Photoshop CS3, Sequence Generator Pro, Maxim DL6
Filters: Astrodon 1.25" R, Astrodon 1.25" B, Astrodon 1.25" G, Astrodon 1.25" L
Accessories: Innovations Foresight ONAG SC, Optec FocusLock, Starizona MicroTouch Autofocuser
Resolution: 2604x2056
Dates: June 17, 2017, June 18, 2017, June 25, 2017
Frames:
Astrodon 1.25" B: 58x120" -15C bin 1x1
Astrodon 1.25" G: 58x120" -15C bin 1x1
Astrodon 1.25" L: 93x120" -15C bin 1x1
Astrodon 1.25" R: 57x120" -15C bin 1x1
Integration: 8.9 hours
Darks: ~20
Flats: ~80
Flat darks: ~80
Bias: ~20
Mean SQM: 19.75
RA center: 259.281 degrees
DEC center: 43.136 degrees
Pixel scale: 0.642 arcsec/pixel
Locations: Home, Rancho Santa Fe, California, United States
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Re: HEIC: What’s in a name?

Postby starsurfer » Tue Jun 27, 2017 9:09 am

bystander wrote:What’s in a name?
ESA Hubble Picture of the Week | 2017 Jun 26

Not all galaxies have the luxury of possessing a simple moniker or quirky nickname. The subject of this NASA/ESA Hubble Space Telescope image was one of the unlucky ones, and goes by the rather unpoetic name of 2XMM J143450.5+033843.

Such a name may seem like a random jumble of numbers and letters, but like all galactic epithets it has a distinct meaning. This galaxy, for example, was detected and observed as part of the second X-ray sky survey performed by ESA’s XMM-Newton Observatory. Its celestial coordinates form the rest of the bulky name, following the “J”: a right ascension value of 14h 34m 50.5s (this can be likened to terrestrial longitude), and a declination of +03d 38m 43s (this can be likened to terrestrial latitude). The other fuzzy object in the frame was named in the same way — it is a bright galaxy named 2XMM J143448.3+033749.

2XMM J143450.5+033843 lies nearly 400 million light-years away from Earth. It is a Seyfert galaxy that is dominated by something known as an Active Galactic Nucleus — its core is thought to contain a supermassive black hole that is emitting huge amounts of radiation, pouring energetic X-rays out into the Universe.

I don't like coordinate based names for things, they're really hard to remember.

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Re: Found images: 2017 June

Postby starsurfer » Tue Jun 27, 2017 9:13 am

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Re: Found images: 2017 June

Postby starsurfer » Tue Jun 27, 2017 9:16 am

Abell 18
http://members.pcug.org.au/~stevec/abell18_STLXL6303_RC14.htm
Copyright: Steve Crouch
Abell18.jpg
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starsurfer
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Re: Found images: 2017 June

Postby starsurfer » Thu Jun 29, 2017 10:59 am

NGC 2998
http://www.astrobin.com/288037/
Copyright: Tero Turunen
928f4454380223d88a7ef5966105afeb.1824x0.jpg
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Re: Found images: 2017 June

Postby starsurfer » Thu Jun 29, 2017 11:00 am

Eskimo Nebula (NGC 2392)
http://astrophotography.aa6g.org/Astrophotos/ngc2392-stf8300.html
Copyright: Chuck Vaughn
ngc2392.jpg
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Re: Found images: 2017 June

Postby starsurfer » Thu Jun 29, 2017 11:05 am

NGC 7497 and MBM 54
http://astrofotografie-hess.heimat.eu/galerie/deepsky/ngc7497.htm
Copyright: Rochus Hess
ngc7497.jpg
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