Recent Submissions: 2011 April 12-14

See new, spectacular, or mysterious sky images.
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owlice
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Recent Submissions: 2011 April 12-14

Post by owlice » Fri Feb 04, 2011 4:56 am

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Please post your images here.

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agreement with the possible uses for your image.

Thank you!
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owlice
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Re: Recent Submissions

Post by owlice » Tue Apr 12, 2011 3:08 am

NGC 3817
http://www.astrogrossi.de
Copyright: Torsten Grossmann
[attachment=4]NGC3817final..jpg[/attachment]

M81 in Ursa Major
http://www.astrosysteme.at/
Copyright: Wolfgang Gruenner and Josef Buechsenmeister
[attachment=3]m81_APOD.jpg[/attachment]

Ursa Major, Pollux, Caster, and Moonset over the Astronomical Observatory of Lisbon
http://www.astrosurf.com/astroarte/OALR ... ce-net.jpg
Copyright: Miguel Claro
[attachment=2]OALRightMoonSequence-net.jpg[/attachment]

Sundog over Ottawa, Ontario
Copyright: Klaus J. Gerken
[attachment=1]dscn6782.jpg[/attachment]

M83: Spiral Galaxy in Hydra
http://www.astro-austral.cl/imagenes/ga ... 3/info.htm
Copyright: José Joaquín Pérez NGC 1097 in Fornax
Copyright: Andrey Oreshko
[attachment=0]1000.jpg[/attachment]
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owlice
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Re: Recent Submissions

Post by owlice » Tue Apr 12, 2011 3:29 am

M81, M8 and IFN
http://jordigallego.fotografiaastronomi ... efield.jpg
Copyright: Jordi Gallego
[attachment=2]M81_M82_IFN_2011_800.jpg[/attachment]

Analemma and Analemma Calendar
http://pikespeakphoto.com/analemma.html
Copyright: Wojtek Rychlik
[attachment=1]analemma.jpg[/attachment] Crescent Moon and Venus over San Diego
Copyright: Steven E Rubin
[attachment=0]sandiego11april_0003.jpg[/attachment]

NGC 2992
http://www.caelumobservatory.com/gallery/n2992.shtml
Copyright: Adam Block
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asymon
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Re: Recent Submissions

Post by asymon » Tue Apr 12, 2011 4:56 am


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owlice
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Re: Recent Submissions

Post by owlice » Tue Apr 12, 2011 10:16 am

Yuri Gagarin
Sent in by: Yuri Petrunin
[attachment=1]Gagarin.jpg[/attachment]

Sagittarius/Scutum Mosaic
http://www.universethroughalens.com/Hob ... HQqg9-A-LB
Copyright: Sanjeev Sivarulrasa
[attachment=0]Sagittarius-Scutum Mosaic 135mm 9 Oct 2010 Sivarulrasa.jpg[/attachment]
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Ann
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Re: Recent Submissions

Post by Ann » Tue Apr 12, 2011 6:01 pm

Adam, I completely love your image of NGC 2992 and 2993! These are a pair of utterly fraternal twins! Colorwise, they could barely be more unlike. NGC 2993, as can be seen from your picture, is a massively starforming galaxy sparkling with blue and pink hues. NGC 2992, on the other hand, is a mostly yellow galaxy with no obvious emission nebulae. The color data for the two galaxies are appropriately different: B-V is 0.470 for NGC 2993, but it could be as low as 0.270. For NGC 2992, however, it is 0.960. That's a huge difference when it comes to galaxies. The U-B index is 0.400 for the red galaxy, NGC 2992, although it could be as low as 0.219. But that's nothing compared with NGC 2993, whose U-B is somewhere between -0.390 and -0.595! That's incredibly ultraviolet, and Adam, you make it show!

Interestingly, however, NGC 2992 is quite dusty, and its far infrared magnitude is a little more than two magnitudes brighter than its blue magnitude. This kind of relationship is common for starforming galaxies, although the dust that remains when a starburst has come to an end may produce a similar relationship between the blue and the far infrared magnitudes. Massively starforming NGC 2993 is almost two and a half magnitudes brighter in the far infrared than in blue light, and in this case it seems obvious that star formation has a lot to do with these colors.

Fascinating tidal formations are also visible in your image. NGC 2992 appears to have expelled so much gas in one direction that star formation is occuring at the end of this tidal tail. Maybe that is a dwarf galaxy in the making?

Like I said, this is a splendid image, Adam! :D

Ann
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Re: Recent Submissions

Post by dmkdmkdmk » Tue Apr 12, 2011 8:32 pm

After a month (March) without any significant images from me, I finally took a nice shot yesterday:

Orion over Seenalper Seeli
http://www.kplan.ch
Copyright: David Kaplan

T J
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Re: Recent Submissions

Post by T J » Tue Apr 12, 2011 9:08 pm

With the significant light pollution in the centre of the UK, deep sky photography isn't always rewarding, but these recent images from my little home observatory were quite pleasing.

Thanks for looking.

Tim
Full size version here : http://www.btinternet.com/~mr.squeegee/ ... 3-2011.jpg
Full size version here : http://www.btinternet.com/~mr.squeegee/ ... -large.jpg

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owlice
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Re: Recent Submissions

Post by owlice » Wed Apr 13, 2011 11:05 am

Cygnus Mosaic
http://www.universethroughalens.com/Hob ... HVCDm-A-LB
Copyright: Sanjeev Sivarulrasa
[attachment=4]Cygnus Mosaic 135mm 10 Sept 2010 Sivarulrasa.jpg[/attachment]

Saturn and the NED
http://saturn.cstoneind.com
Copyright: Christopher Go
[attachment=3]saturn20110409.jpg[/attachment]
[attachment=2]saturn20110411.jpg[/attachment]
Moonlit Trusk Lough, Ballybofey, Co. Donegal
http://www.DonegalSkies.com
Copyright: Brendan Alexander
[attachment=1]foreground_flat_blue.jpg[/attachment]

Sh2-199: Soul Nebula
http://www.istarion.net/
Copyright: Matts Sporre
[attachment=0]Sh2-199-The-Soul-Nebula-Hubble-submitted-no-frame.jpg[/attachment]
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owlice
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Re: Recent Submissions

Post by owlice » Thu Apr 14, 2011 1:41 am

IC4603 and IC4604
Copyright: Olivier Garde
[attachment=4]GARDE.jpg[/attachment]

M101: Pinwheel Galaxy
http://www.starkeeper.it/M101RC.htm
Copyright: Leonardo Orazi
[attachment=3]orazi_M101.jpg[/attachment]

Peaches and Stars
Copyright: Tunç Tezel
[attachment=2]KumlukalanNorth.jpg[/attachment]

Caribbean Sunset and Moon
Copyright: Francis Audet
[attachment=1]Moon and Sunset in the Caribbean.jpg[/attachment]

Aurora and Whirligig
http://www.alaskascience.com
Copyright: Neal Brown
[attachment=0]Aurora.jpg[/attachment]
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pablo22
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Re: Recent Submissions

Post by pablo22 » Thu Apr 14, 2011 6:04 am

M97 - Owl Nebula - PK 148+57.1 - false color narrow band
http://astrofotky.cz/~Konihlav
Copyright: Pavel Pech
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DaemonGPF
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Orion and Running Man

Post by DaemonGPF » Fri Apr 15, 2011 12:26 am

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Last edited by DaemonGPF on Tue Aug 30, 2011 3:36 am, edited 3 times in total.
Reason: Attached smaller images for faster downloading; left links to large images. Thanks for sharing!