Starship Asterisk*

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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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Seagull Nebula (IC 2177)
http://www.woodlandsobservatory.com/Sea ... ll0212.htm
Copyright: Alistair Symon

Nebulosas Laguna y Trífida
Copyright: Jose Manuel González Zornoza

Omega Nebula (M17) widefield
http://www.tamanti.it/Nebulae/M17.htm
Copyright: Andrea Tamanti

Klacsány Imre wrote:

250/1200 Newton Canon 350d eos
27x5min iso800

IC 1295
http://www.eso.org/public/news/eso1317/
Copyright: ESO

Arp 273
http://www.capella-observatory.com/Imag ... Arp273.htm
Copyright: Makis Palaiologou, Stefan Binnewies and Josef Pöpsel This post is dedicated to the memory of Halton Arp who sadly passed away on 28 December, 2013. May his soul find rest amongst the stars.

Pacman Nebula (NGC 281) widefield
http://www.flickr.com/photos/neutronman/5699532339/
Copyright: John Davis

Helix Nebula (NGC 7293)
http://www.astrodonimaging.com/gallery/ ... ?imgID=265
Copyright: Don Goldman You can read more about the bowshock to the south in this recent paper: http://arxiv.org/abs/1308.5460

NS 2
http://www.astrophoton.com/GN00_42_0.htm
Copyright: Bernhard Hubl This nebula is also catalogued as GN 00.42.0

NGC 2633-4
http://www.astrobin.com/68136/
Copyright: Samuel Díaz Lopez and Salvatore Iovene NGC 2633 is the barred spiral and NGC 2634 is the shell elliptical galaxy. Its shells were discovered in 2000 but for some reason a paper was never published. NGC 2633 is also known as Arp 80 but NGC 2634 certainly qualifies as a peculiar galaxy and should have been included in the Arp Atlas but its outer shells probably wouldn't have been visible at the time Halton Arp was compiling the atlas. There are other shell elliptical galaxies in the Arp Atlas such as NGC 474, NGC 507, IC 51 and IC 1575, which appear under the category of "galaxies with concentric rings". IC 51 (Arp 230) is an amazing example, a comparison of the original plate and a HST image.

Shells around many ellipticals were discovered after new techniques in photographic enhancement such as unsharp masking were pioneered by David Malin who made one of the first recognised discoveries of a shell elliptical in 1979, this was the galaxy M89. Afterwards, many more were found and a catalogue was published by David Malin and David Carter in 1983.

In the decades that have followed, shell ellipticals have been studied by many astronomers with observatories such as the HST and GALEX and continue to receive much attention now and will continue to do so in the foreseeable future. A major topic of interest in studies of galactic evolution is the mass assembly of galaxies. There are large-scale projects that aim to detect faint structures around both spiral galaxies and elliptical galaxies. These features represent the remnants of minor merger interactions and signatures of past collisions. It is widely believed that the shells in shell ellipticals are the product of mergers between galaxies. Also shell ellipticals are beginning to receive more attention from amateur astrophotographers!

Orion Sword region
http://jwalk.smugmug.com/Photography/As ... -Wb9wsHM/A
Copyright: Jimmy Walker

Orion Nebula (M42)
http://herschel.cf.ac.uk/results/orion-nebula
Copyright: ESA/PACS/NASA/JPL-Caltech/IRAM

vdB152
http://www.karelteuwen.be/photo_page.ph ... 5&album=15
Copyright: Karel Teuwen

M Class flare in NOAA 11944

http://www.lmsal.com/solarsoft/latest_e ... index.html



http://www.astrobin.com/full/72269/0/?real=&mod=




http://www.astrobin.com/full/72185/0/




http://www.astrobin.com/full/71929/0/?real=&mod=


Taken with Coronado SolarMaxII 90 and ASI120MM in Málaga (Spain)

Jose Cabello

Sharpless 124
http://istarion.net/Picturepages/Nebulas/SH2-124.shtml This got to be the deepest image of sh124 out there. If people knew it looked like this it would be imaged more often (maybe now it will). Also I tried to google it and came up with basically nothing - except for sharplesscatalogue.com and galaxymap.org.

/John

Hind's Variable Nebula (NGC 1555)
http://www.skyimager.net/astro/nebulae/ ... 00902.html
Copyright: David Churchill

Pinwheel Galaxy (M101) widefield
http://www.starpointing.com/ccd/m101.html
Copyright: Fabian Neyer

starsurfer wrote:NGC 2633-4
http://www.astrobin.com/68136/
Copyright: Samuel Díaz Lopez and Salvatore Iovene

f546225df01771c70e7e5b0f0f71d543.1824x0_q100.jpg

NGC 2633 is the barred spiral and NGC 2634 is the shell elliptical galaxy. Its shells were discovered in 2000 but for some reason a paper was never published. NGC 2633 is also known as Arp 80 but NGC 2634 certainly qualifies as a peculiar galaxy and should have been included in the Arp Atlas but its outer shells probably wouldn't have been visible at the time Halton Arp was compiling the atlas. There are other shell elliptical galaxies in the Arp Atlas such as NGC 474, NGC 507, IC 51 and IC 1575, which appear under the category of "galaxies with concentric rings". IC 51 (Arp 230) is an amazing example, a comparison of the original plate and a HST image.

Shells around many ellipticals were discovered after new techniques in photographic enhancement such as unsharp masking were pioneered by David Malin who made one of the first recognised discoveries of a shell elliptical in 1979, this was the galaxy M89. Afterwards, many more were found and a catalogue was published by David Malin and David Carter in 1983.

In the decades that have followed, shell ellipticals have been studied by many astronomers with observatories such as the HST and GALEX and continue to receive much attention now and will continue to do so in the foreseeable future. A major topic of interest in studies of galactic evolution is the mass assembly of galaxies. There are large-scale projects that aim to detect faint structures around both spiral galaxies and elliptical galaxies. These features represent the remnants of minor merger interactions and signatures of past collisions. It is widely believed that the shells in shell ellipticals are the product of mergers between galaxies. Also shell ellipticals are beginning to receive more attention from amateur astrophotographers!

That's so interesting, and what a great picture, starsurfer (and Samuel Díaz Lopez and Salvatore Iovene)!

Ann

Ann wrote:

starsurfer wrote:NGC 2633-4
http://www.astrobin.com/68136/
Copyright: Samuel Díaz Lopez and Salvatore Iovene

f546225df01771c70e7e5b0f0f71d543.1824x0_q100.jpg

NGC 2633 is the barred spiral and NGC 2634 is the shell elliptical galaxy. Its shells were discovered in 2000 but for some reason a paper was never published. NGC 2633 is also known as Arp 80 but NGC 2634 certainly qualifies as a peculiar galaxy and should have been included in the Arp Atlas but its outer shells probably wouldn't have been visible at the time Halton Arp was compiling the atlas. There are other shell elliptical galaxies in the Arp Atlas such as NGC 474, NGC 507, IC 51 and IC 1575, which appear under the category of "galaxies with concentric rings". IC 51 (Arp 230) is an amazing example, a comparison of the original plate and a HST image.

Shells around many ellipticals were discovered after new techniques in photographic enhancement such as unsharp masking were pioneered by David Malin who made one of the first recognised discoveries of a shell elliptical in 1979, this was the galaxy M89. Afterwards, many more were found and a catalogue was published by David Malin and David Carter in 1983.

In the decades that have followed, shell ellipticals have been studied by many astronomers with observatories such as the HST and GALEX and continue to receive much attention now and will continue to do so in the foreseeable future. A major topic of interest in studies of galactic evolution is the mass assembly of galaxies. There are large-scale projects that aim to detect faint structures around both spiral galaxies and elliptical galaxies. These features represent the remnants of minor merger interactions and signatures of past collisions. It is widely believed that the shells in shell ellipticals are the product of mergers between galaxies. Also shell ellipticals are beginning to receive more attention from amateur astrophotographers!

That's so interesting, and what a great picture, starsurfer (and Samuel Díaz Lopez and Salvatore Iovene)!

Ann

I'm so happy that you like the image! If you like shell ellipticals, then you will love the future upcoming images from various amateurs!

Kronberger 63
http://www.chart32.de
Copyright: CHART32 This planetary nebula was discovered by Matthias Kronberger who is a member of the Deep Sky Hunters. It is also known as the Medallion Nebula due to its location in the constellation of Orion.

V1331 Cygni
http://www.caelumobservatory.com/gallery/v1331cyg.shtml
Copyright: Adam Block/Mount Lemmon SkyCenter/University of Arizona This is a peculiar T Tauri star with a yellow nebula produced by past outbursts. It is embedded in the dark nebula LDN 981, which is part of a large dark nebula complex along with LDN 988. A widefield image by Tom Davis: http://www.tvdavisastropics.com/astroim ... 00008c.htm

NGC 2865
http://www.flickr.com/photos/geckzilla/9823338186/
Copyright: Hubble Legacy Archive/NASA/ESA
Processing: Judy Schmidt The narrow field of view of the HST shows only a small part of this shell elliptical galaxy. The full extent can be seen in this deep AAO image: http://www.aao.gov.au/images/deep_html/n2865_d.html

Hooray!!! Adam Block has posted a new galaxy picture - of lovely galaxy NGC 2276 and its elliptical "friend" NGC 2300!!!

Ann