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Found Images: 2014 May
Posted: Thu May 01, 2014 11:04 pm
by bystander
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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NASA/JPL/Cassini/CICLOPS: Cassini Spies the Ice-Giant Planet Uranus
Re: Found Images: 2014 April
Posted: Fri May 02, 2014 10:59 am
by starsurfer
NGC 1360
http://www.capella-observatory.com/Imag ... GC1360.htm
Copyright: Dietmar Böcker, Ernst von Voigt, Stefan Binnewies and Josef Pöpsel
Re: Found Images: 2014 May
Posted: Mon May 05, 2014 11:18 am
by starsurfer
Re: Found Images: 2014 May
Posted: Tue May 06, 2014 7:04 am
by starsurfer
IC 51
https://www.flickr.com/photos/geckzilla/9861534214/
Copyright: Hubble Legacy Archive/NASA/ESA
Processing: Judy Schmidt
This very strange galaxy is also catalogued as Arp 230 and is similar to Centaurus A in that it appears to be a merger between an elliptical and a spiral galaxy and also exhibits outer tidal shells.
Re: Found Images: 2014 May
Posted: Tue May 06, 2014 3:22 pm
by Ann
Adam Block has uploaded a new galaxy picture,
NGC 4395.
NGC 4395 is a vigorously starforming galaxy with very large, bright blue clusters and associations. In spite of all the new stars, however, NGC 4395 doesn't have any very bright or very obvious emission nebulas, so my impression is that that the starburst here is coming to an end. The galaxy has a faint bulge and a tiny nucleus, suggesting that it used to be a small, faint and unremarkable galaxy before it turned on its present remarkable fireworks. In fact, according to
this paper NGC 4395 doesn't even have a bulge! Nevertheless, the galaxy has a black hole at its center.
http://en.wikipedia.org/wiki/NGC_4395 wrote:
The nucleus of NGC 4395 is active and the galaxy is classified as a Seyfert. It is notable for containing one of the smallest supermassive black hole with an accurately-determined mass.[3] The central black hole has a mass of "only" 300,000 sun masses,[4] which would make it a so-called "intermediate-mass black hole".
Ann
Re: Found Images: 2014 May
Posted: Tue May 06, 2014 7:48 pm
by alcarreño
Otra mas.
Esta vez le toca a ARP 273
ARP 273 por
astrocentejo, en Flickr
Re: Found Images: 2014 May
Posted: Wed May 07, 2014 7:42 am
by starsurfer
Ann wrote:Adam Block has uploaded a new galaxy picture,
NGC 4395.
NGC 4395 is a vigorously starforming galaxy with very large, bright blue clusters and associations. In spite of all the new stars, however, NGC 4395 doesn't have any very bright or very obvious emission nebulas, so my impression is that that the starburst here is coming to an end. The galaxy has a faint bulge and a tiny nucleus, suggesting that it used to be a small, faint and unremarkable galaxy before it turned on its present remarkable fireworks. In fact, according to
this paper NGC 4395 doesn't even have a bulge! Nevertheless, the galaxy has a black hole at its center.
http://en.wikipedia.org/wiki/NGC_4395 wrote:
The nucleus of NGC 4395 is active and the galaxy is classified as a Seyfert. It is notable for containing one of the smallest supermassive black hole with an accurately-determined mass.[3] The central black hole has a mass of "only" 300,000 sun masses,[4] which would make it a so-called "intermediate-mass black hole".
Ann
I was quite surprised to see this imaged by Adam Block!! However, it has plenty of emission nebulae but are only visible with Ha exposures. See this paper for more info:
http://iopscience.iop.org/0004-637X/515/1/97/
Also I think Adam Block will have images of many interesting galaxies coming up soon! Can't wait!!!
![Very Happy :D](./images/smilies/icon_biggrin.gif)
Re: Found Images: 2014 May
Posted: Wed May 07, 2014 7:55 am
by starsurfer
IC 348 region
http://downthewormhole.blogspot.co.uk/2 ... e-tex.html
Copyright: John Davis
IC 348 is the small blue nebula with an associated cluster near the left edge. The large pink nebula is Ced 18a and the dark nebula in front of it is B3. The medium sized blue reflection nebula near the right side is NGC 1333, the smaller yellow one at right edge is vdB12 and the smaller blue one below it is vdB13.
Re: Found Images: 2014 May
Posted: Wed May 07, 2014 8:12 am
by pisto92
M63 Sunflower Galaxy
http://www.astrobin.com/94809/B/
Copyright: Andrea Pistocchini
Strange transit of ISS
http://www.astrobin.com/93227/
Copyright: Andrea Pistocchini
Re: Found Images: 2014 May
Posted: Wed May 07, 2014 8:37 am
by pisto92
Re: Found Images: 2014 May
Posted: Wed May 07, 2014 10:12 pm
by bystander
Re: Found Images: 2014 May
Posted: Wed May 07, 2014 10:15 pm
by bystander
Re: Found Images: 2014 May
Posted: Thu May 08, 2014 7:36 am
by starsurfer
I really want to see a HaLRGB composite image of this by an amateur astrophotographer, which would show an amazing ionized outflow structure similar to the one associated with M82.
Re: Found Images: 2014 May
Posted: Thu May 08, 2014 7:38 am
by starsurfer
NGC 1344
http://www.astrodonimaging.com/gallery/ ... ?imgID=268
Copyright: Don Goldman
This is one of the first few shell elliptical galaxies to be identified more than 30 years ago.
Re: Found Images: 2014 May
Posted: Thu May 08, 2014 9:35 pm
by bystander
starsurfer wrote:
I really want to see a HaLRGB composite image of this by an amateur astrophotographer, which would show an amazing ionized outflow structure similar to the one associated with M82.
geckzilla ??? Not an astrophotographer but she does wonders with Hubble data.
Re: Found Images: 2014 May
Posted: Thu May 08, 2014 10:10 pm
by geckzilla
Unfortunately, there's no H-alpha data available in the Hubble archive for this. If there were, that HEIC image would already have it included. Our best bet is to have one of the astrophotographers image it.
Re: Found Images: 2014 May
Posted: Fri May 09, 2014 1:50 am
by Ann
Note the interesting distribution of stellar populations in NGC 4605. One third of the galaxy is mostly green, one third is blue, and one third is yellow. Also, the yellow and the blue parts of the galaxy have very similar surface brightnesses. You may not be able to tell the surface brightness distribution of a galaxy from a typical photo, since many astrophotographs are "tweaked" so that the brightest parts are "turned down" a bit, while fainter parts are amped up. (Amateurs are not always able to do this, and therefore they sometimes produce "truer" portraits of the surface brightness of galaxies. Check out
this amateur photograph of M100, showing the galaxy's bright center and faint arms.) James D Wray, in his Color Atlas of Galaxies, never tried to change the surface brightness distribution of the galaxies he photographed, and some of his galaxy portraits look very different from what we are used to. But when he photographed NGC 4605, the galaxy looked almost equally bright "all over".
Ann
Re: Found Images: 2014 May
Posted: Fri May 09, 2014 11:21 am
by starsurfer
bystander wrote:starsurfer wrote:
I really want to see a HaLRGB composite image of this by an amateur astrophotographer, which would show an amazing ionized outflow structure similar to the one associated with M82.
geckzilla ??? Not an astrophotographer but she does wonders with Hubble data.
Nah not geckzilla, someone like Ken Crawford or Adam Block!
Re: Found Images: 2014 May
Posted: Fri May 09, 2014 11:33 am
by starsurfer
Re: Found Images: 2014 May
Posted: Mon May 12, 2014 5:23 pm
by starsurfer
Sh2-284
http://www.noao.edu/image_gallery/html/im1177.html
Copyright: T.A. Rector (University of Alaska Anchorage) and WIYN
Re: Found Images: 2014 May
Posted: Tue May 13, 2014 10:11 am
by starsurfer
Re: Found Images: 2014 May
Posted: Wed May 14, 2014 9:22 pm
by starsurfer
Re: Found Images: 2014 May
Posted: Thu May 15, 2014 10:45 am
by starsurfer
Re: Found Images: 2014 May
Posted: Thu May 15, 2014 6:03 pm
by geckzilla
Image from 2007 but I do not remember seeing it before.
PIA08393: Rainbow on the Rings
NASA/JPL/Space Science Institute
http://photojournal.jpl.nasa.gov/catalog/pia08393
Re: Found Images: 2014 May
Posted: Thu May 15, 2014 6:14 pm
by bystander