Found Images: 2018 November

[bystander]

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Have you seen a great image or video somewhere that you think would make a great APOD? Nominate it for APOD! Please post as much information here as you have about the image/video with a link to any source(s) for it you know of here, and the editors will take a look.

When posting the image itself, please do not post anything larger than a thumbnail here; please honor the copyright holder's copyright.

Please keep hotlinked images under 400K.

Thank you!

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[starsurfer]

NGC 3923
https://www.rolfolsenastrophotography.c ... /i-t3tLKx4
Copyright: Rolf Olsen

Click to view full size image

[starsurfer]

M83
http://outters.fr/wp/m83-lhargb/
Copyright: Ciel Austral
Processing: Nicolas Outters

[starsurfer]

M85 and NGC 4394
https://www.hansonastronomy.com/messier-85
Copyright: Mark Hanson

[starsurfer]

Tarantula Nebula (NGC 2070)
http://www.astrophoton.com/NGC2070.htm
Copyright: CEDIC
Processing: Christoph Kaltseis

[starsurfer]

M17
http://www.karelteuwen.be/photo_page.ph ... 2&album=19
Copyright: Karel Teuwen

[starsurfer]

Orion Nebula (M42)
http://www.astrostudio.at/1_Deep%20Sky% ... 28e0c27f63
Copyright: Gerald Rhemann

Click to view full size image

[bystander]

A Lonely Little Telescope
ESO Picture of the Week | 2018 Nov 05

Credit: ESO / Petr Horálek

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This once-busy eye on the sky now gazes wistfully into the heavens from its mountaintop home. Located at ESO’s La Silla Observatory in Chile’s Atacama Desert, this is the dish of the now-retired Swedish-ESO Submillimetre Telescope (or SEST for short).

The SEST was decommissioned in 2003 to make way for the Atacama Pathfinder Experiment telescope (APEX) and the Atacama Large Millimeter/submillimeter Array (ALMA), both of which sit on the Chajnantor plateau in Chile’s Atacama region (as their names suggest). In its day, the SEST was the largest sub-millimetre telescope in the southern hemisphere; it notably broke new ground in the study of some of the coldest regions in the Milky Way, where stars are just beginning to form from cosmic gas and dust.

The bright streak of the Milky Way rises above the SEST in this image. Within this river of light one can, poetically, see some of the huge star formation regions that the telescope helped us to understand. In fact, one can see in this single image almost the whole of the Milky Way visible from this location — part of it in the sky above, and part reflected off the shiny surface of the telescope dish.

This striking frame includes so many beautiful night sky objects that it justifies a whole new annotated version of this photograph — simply click here to see the locations of everything from the bright stars Sirius and Procyon to the Orion Nebula, the Cone Nebula, the atmospheric and cosmic phenomena of airglow and zodiacal light, Comet Lovejoy, and more.

The image was captured by ESO Photo Ambassador Petr Horálek.

[bystander]

Feeling Blue
ESA Hubble Picture of the Week | 2018 Nov 05

Credit: ESA/Hubble & NASA

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This captivating image from the NASA/ESA Hubble Space Telescope’s Wide Field Camera 3 shows a lonely dwarf galaxy, a staggering 100 million light-years away from Earth. This image depicts the blue compact dwarf galaxy ESO 338-4, which can be found in the constellation of Corona Australis (The Southern Crown).

Blue compact dwarf galaxies take their name from the intensely blue star-forming regions that are often found within their cores. One such region can be seen embedded in ESO 338-4, which is populated with bright young stars voraciously consuming hydrogen. These massive stars are doomed to a short existence, as despite their vast supplies of hydrogen fuel. The nuclear reactions in the cores of these stars will burn through these supplies in only millions of years — a mere blink of an eye in astronomical terms.

The young blue stars nestled within a cloud of dust and gas in the centre of this image are the result of a recent galaxy merger between a wandering galaxy and ESO 388-4. This galactic interaction disrupted the clouds of gas and dust surrounding ESO 338-4 and led to the rapid formation of a new population of stars.

[starsurfer]

SMC
https://www.astrobin.com/362738/
Copyright: John Gleason

[starsurfer]

47 Tucanae (NGC 104)
http://www.pampaskies.com/gallery3/Deep ... canae_crop
Copyright: Ignacio Diaz Bobillo

[starsurfer]

LMC
https://www.astrobin.com/285694/0/
Copyright: Tommy Nawratil

[Ann]

NGC 5408
http://sci.esa.int/xmm-newton/57778-ngc-5408-galaxy/
Image credit: NASA/ ESA/ Hubble/ Judy Schmidt, www.geckzilla.com

Click to view full size image

[starsurfer]

Abell 665
https://www.spacetelescope.org/images/potw1744a/
Copyright: ESA/Hubble & NASA

Click to view full size image

[starsurfer]

Pacman Nebula (NGC 281)
http://astro-koop.de/?attachment_id=2010
Copyright: Stefan Heutz, Wolfgang Ries and Michael Breite

[bystander]

Stunning Exoplanet Time-Lapse
ESO Picture of the Week | 2018 Nov 11

Credit: ESO/Lagrange/SPHERE Consortium

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ESO's Very Large Telescope (VLT) has captured an unprecedented series of images showing the passage of the exoplanet Beta Pictoris b around its parent star. This young massive exoplanet was initially discovered in 2008 using the NACO instrument at the VLT. The same science team since tracked the exoplanet from late 2014 until late 2016, using the Spectro-Polarimetric High-contrast Exoplanet REsearch instrument (SPHERE) — another instrument on the VLT.

Beta Pictoris b then passed so close to the halo of the star that no instrument could resolve them from one another. Almost two years later, after seeming to merge into the image of the star, Beta Pictoris b has now emerged from the halo. This reappearance was captured again by SPHERE.

• The complete series of images, with the bright glow of the star Beta Pictoris blocked out, have been compiled to create a stunning and unique time-lapse of the long-period orbit of Beta Pictoris b.

SPHERE caught sight of Beta Pictoris b by looking at it directly — not by inferring its existence. Most known exoplanets have been discovered using indirect methods — observing how they affect a star's position or brightness. ESO's SPHERE specialises in a method called direct imaging, hunting for exoplanets by taking their photographs. This extraordinarily challenging endeavour provides us with clear images of distant worlds such as Beta Pictoris b, 63 light-years away.

Beta Pictoris b orbits its star at a distance similar to that between the Sun and Saturn, approximately 1.3 billion kilometres, meaning it’s the most closely orbiting exoplanet ever to have been directly imaged. The surface of this young planet is still hot, around 1 500 °C, and the light it emits enabled SPHERE to discover it and track its orbit, seeing it emerge from its passage in front of its parent star. Whilst a glance at these images might suggest that the planet transits the star, eclipsing a little of its light, Beta Pictoris b does not in fact quite transit. These images are a remarkable achievement, heralding a new era in one of the most exciting and challenging areas of astronomy — discovering and characterising exoplanets.

[bystander]

Of Bent Time and Jellyfish
ESA Hubble Picture of the Week | 2018 Nov 11

Credit: ESA/Hubble & NASA; Acknowledgement: Judy Schmidt

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At first glance, a bright blue crescent immediately jumps out of this NASA/ESA Hubble Space Telescope image: is it a bird? A plane? Evidence of extraterrestrial life? No — it’s a galaxy.

The shape of this galaxy admittedly appears to be somewhat bizarre, so confusion would be forgiven. This is due to a cosmic phenomenon called gravitational lensing. In this image, the gravitational influence of a massive galaxy cluster (called SDSS J1110+6459) is causing its surroundings spacetime to bend and warp, affecting the passage of any nearby light. This cluster to the lower left of the blue streak; a few more signs of lensing (streaks, blobs, curved lines, distorted shapes) can be seen dotted around this area.

This image also features a rare and interesting type of galaxy called a jellyfish galaxy, visible just right next to the cluster and apparently dripping bright blue material. These are galaxies that lose gas via a process called galactic ram pressure stripping, where the drag caused by the galaxy moving through space causes gas to be stripped away.

viewtopic.php?t=37366

[starsurfer]

Stock 23
http://afesan.es/Deepspace/slides/Stock ... ia%29.html
Copyright: Antonio Sánchez

[starsurfer]

Crater Cluster
http://members.pcug.org.au/~stevec/laev ... 3_RC14.htm
Copyright: Steve Crouch

[starsurfer]

Patchick 10
http://www.pbase.com/jshuder/image/168346358
Copyright: Jim Shuder

[starsurfer]

NGC 6951
https://www.astrobin.com/309103/D/
Copyright: Joel Kuiper

[starsurfer]

NGC 2146
https://www.astrobin.com/318292/0/
Copyright: Anis Abdul

[G.Chatzifrantzis]

NGC 6992 The Eastern Veil Ha-Sii-Oiii

Equipment:
OTA : Celestron C11 XLT - Starizona Hyperstar f2 - 560mm FL
Mount : EQ8
Camera : Atik 460ex
Guiding : Stellarvue 80mm - Lodestar X2
Filters : Ha-Sii-Oiii HighSpeed f2

SoftWare :
DSS - Pix - Cs

Exposure :
Ha : 1h
Oiii : 1h
Sii : 1h

Location : City Of Thessaloniki

[Ann]

NGC 3293 and NGC 3324
Copyright: Gerald Rhemann
http://www.astrostudio.at/1_Deep%20Sky% ... 8e8a914e40

Click to view full size image

This picture shows the splendid cluster NGC 3293, and the Gabriela Mistral Nebula, NGC 3324.

I have posted it in honor of starsurfer's three thousand two hundred and ninety-third post here at Starship Asterisk*!

Ann

[starsurfer]

NGC 3293 and NGC 3324
Copyright: Gerald Rhemann
http://www.astrostudio.at/1_Deep%20Sky% ... 8e8a914e40

Click to view full size image

This picture shows the splendid cluster NGC 3293, and the Gabriela Mistral Nebula, NGC 3324.

I have posted it in honor of starsurfer's three thousand two hundred and ninety-third post here at Starship Asterisk*!

Ann

Thanks for that, it's a gem of a cluster!