Starship Asterisk*

by **Sandgirl** » Thu Sep 26, 2013 7:41 pm

Nova Delphini Reddishing
Copyrights: Davide Manca

by **ufoken** » Sun Sep 15, 2013 1:58 am

Nova Delphinus 2013
Taken September 15, 2013, 1 month and 1 day after it was discovered.
Photo Copyright University of Bradford
Photo Requested By: Kenneth Green at telescope.org

by **geckzilla** » Wed Sep 11, 2013 3:53 pm

Those are neat, Olivier. I wonder why the trough near 4840 disappears and then starts to reappear again at the end of the animation.

by **Olivier Garde** » Wed Sep 11, 2013 3:30 pm

Here's a time evolution spectrum taken with an eshel spectrograph and a C14 since the discovery of the nova (August the 14Th) to the 5th september.

Hbeta region evolution

and the FeII lines risen "the iron age of the nova"

Olivier GARDE
ARAS group
FRANCE

by **owlice** » Tue Sep 10, 2013 3:43 pm

I am speechless with the dramatic change I saw of the recent Nova in the constellation of Delphinus.
In just 20 days the Nova turned from a bright blue color to an intense red/pink. It's magnitude dropped
considerably as well. Its one of the things you don't see everyday.

Its a fine example of what the great philosopher Heraclitus once said :

"There is nothing permanent except change."

(click for larger version)

hgg2013

Nova when in blue phase : http://www.astrovox.gr/forum/album_pic.php?pic_id=16823
Recent (red) : http://s14.postimg.org/cm1byoxn3/Nova_D ... _br_cb.png

Animation showing its transformation:

hgg2013

Thank you.
George Georgatos,
Kefallinia, Greece.

by **Sandgirl** » Sat Sep 07, 2013 12:15 pm

Nova Delphini 2013
Copyrights: Alessandro Dimai

Nova Delphini spectra
Copyrights: Robert Minor

by **Efrain Morales** » Sat Sep 07, 2013 6:38 am

Nova Delphini 2013 on August 23rd, 01:01ut. Four images taken from the 16th, 18th, 23rd and Sept. 2nd, See Animation At:( http://www.jaicoa-observatory.com/SNDel ... im-EMr.gif ) Showing the Nova brightness differentials through this period (decreasing) and more on the red (Ha). A nova (plural novae or novas) is a cataclysmic nuclear explosion in a white dwarf star. It is caused by the accretion of hydrogen on to the surface of the star, which ignites and starts nuclear fusion in a runaway manner.

by **rhminor** » Thu Sep 05, 2013 9:21 pm

The attached image shows the evolution of the spectrum of Nova Delphini over 2 1/2 weeks.

Taken from my backyard in Berkeley CA., dodging clouds and fog on the first two nights, but as clear as it ever gets in Berkeley for the rest. Taken with a modified Canon T1i (filters removed) Celestron C8 with Rainbow Optics diffraction grating between the scope and the camera.
Scope positioned and allowed to drift for 4 sec with the shutter open at iso 6400. All spectra are identical exposure time and ISO.

Fascinating to imagine what is going on at the nova to cause the continuum to fade while the hydrogen emission lines remain so strong. Reminds me of the spectrum of "Campbells Hydrogen Star" - a planetary nebula with a red shell and almost no Oiii emission but relatively strong Hbeta.

The zero order thru the grating gives an indication of the overall fading of the nova.

: nova delphini spectra

by **zema88** » Wed Sep 04, 2013 1:22 pm

A special star within many othes
Copyright: Paolo Demaria

Full resolution: http://www.astrobin.com/55067/0/?real=&mod=none
Tamron 17-50 f/2.8, Canon Eos450D
Castelmagno, Cn, Italy
Paolo Demaria, Ass. Astrofili Bisalta

by **Efrain Morales** » Fri Aug 30, 2013 6:02 pm

Nova Delphini 2013 on August 18th, 01:29ut. Slightly brighter from my last observation holding presently at 4.8-5.2 mag.

by **avdhoeven** » Thu Aug 29, 2013 9:23 pm

Nova time evolution video:

Click to play embedded YouTube video.

by **Sandgirl** » Sat Aug 24, 2013 7:31 pm

Nova Delphini and two Planetary nebulae
Copyrights: Anton Spenko

New Nova Delphinus
Copyrights: Carles Corney

Nova Delphini 2013 - Aug 18th
Copyrights: Damian Peach

Bright Nova in Delphinus
Copyrights: John Chumack

Nova Delphini 2013 now dimming to 5.5 mag
Copyrights: John Chumack

by **geckzilla** » Sat Aug 24, 2013 6:03 pm

I don't know why I didn't notice before but there is definitely a smiley face asterism right next to the Nova.

by **ExitPupil** » Sat Aug 24, 2013 4:07 pm

Nova Delphinus Comparison

http://exitpupil.org
http://www.facebook.com/ExitPupilCreativeWorks
Copyright: Scott MacNeill

: Click to view full size image

by **agambaros** » Sun Aug 18, 2013 3:01 pm

NOVA DELPHINI 2013

Alessandro Gambaro
Castano Primo (MI) Italy

by **Sandgirl** » Sun Aug 18, 2013 10:57 am

NOVA DELPHINI 2013
Copyrights: Ernesto Guido & N. Howes

Bright Nova in Delphinus
Copyrights: Amirreza Kamkar

Nova Delphini Spectrum
Copyrights: Juerg Alean

by **ViliMax** » Sat Aug 17, 2013 8:32 pm

Nova in Delphinus from 2013-08-16

http://www.irida-observatory.org

Copyright: [url=mailto://info@irida-observatory.org]Velimir Popov, Emil Ivanov[/url]

Thе image was taken from remotely controlled IRIDA Observatory on 2013-08-16 / 22:15:56 UT
LRGB combination: L:6*120sec; R:6*120sec; G:6*120sec; B:6*120sec; Total exp. time 48 min (moon and haze)

: Click to view full size image

Thank you for looking ...

http://www.irida-observatory.org

Copyright: [url=mailto://info@irida-observatory.org]Velimir Popov, Emil Ivanov[/url]

by **avdhoeven** » Sat Aug 17, 2013 8:30 pm

I've put a nice comparison together using the images from the Digitized sky survey of 1990 and my image of 16th of August. It clearly shows the brightness of the nova and on the Digitized Sky Survey image you can see the progenitor...

Full resolution

by **Sandgirl** » Sat Aug 17, 2013 2:26 pm

Nova Delphini
Copyrights: Nick James

Nova Del 2013
Copyrights: Juan Carlos Casado

by **Sandgirl** » Sat Aug 17, 2013 2:17 pm

Nova Delphini
Copyrights: Nick James

nova_del_20130815.916_ids.jpg

by **hgg2k** » Fri Aug 16, 2013 10:54 pm

Nova Delphinus 2013

Celestron CGE 9.25"XLT f/10 @ 2350mm
SBIG ST-2000XCM /w AO-8 @ 4hz
42x60sec.

: Click to view full size image

http://www.astrovox.gr/forum/album_sear ... search=hgg
George Georgatos.
hgg2013.

by **Efrain Morales** » Fri Aug 16, 2013 5:29 pm

The New Nova Delphini 2013 on August 16th, 03:13ut. Discovered by a Japanese amateur astronomer Koichi Itagaki of Yamagata, Japan two days ago at a magnitude 6.2 then and now much brighter from my observation the day before, estimated now between 4.5-6 magnitudes (outburst?). It is located in the constellation Delphinus. (Equipment: LX200ACF 12 in. OTA, F6.3, CGE mount, ST402me NAB Ccd, Astronomik LRGB filter set.)

by **Leonardo** » Fri Aug 16, 2013 5:26 pm

16 August UT 01.00
RGB 3x180s each channel
Copyright Leonardo Orazi

by **avdhoeven** » Fri Aug 16, 2013 3:10 pm

Here is my image of the nova of last night. It is shown together with ngc 6905 aka the blue flash nebula.

Copyright: André van der Hoeven - http://www.astro-photo.nl

Full resolution

And here is an animated version before and after using digitized sky survey data.

by **ViliMax** » Fri Aug 16, 2013 6:32 am

Bright nova in Delphinus: PNV J20233073+2046041

http://www.irida-observatory.org

Copyright: [url=mailto://info@irida-observatory.org]Velimir Popov, Emil Ivanov[/url]

K. Itagaki discovcered a bright nova in Delphinus:
PNV J20233073+2046041
RA: 20 23 30.73
Dec: +20 46 04.1
More info: http://www.cbat.eps.harvard.edu/unconf/ ... 46041.html
Itagaki's image : http://www.k-itagaki.jp/images/pnv-del.jpg

This image was taken from remotely controlled IRIDA Observatory on 2013-08-15 / 18:59:29 UT
RGB combination: R:10*30sec; G:10*30sec; B:10*30sec; Total exp. time 15 min

: Click to view full size image

Annotated image:

: Click to view full size image

Mousehover image

: Click to view full size image 1 or image 2

Comparison with old DSS image of the same region - animation

: Click to view full size image

Thank you for looking ...

http://www.irida-observatory.org

Copyright: [url=mailto://info@irida-observatory.org]Velimir Popov, Emil Ivanov[/url]

Starship Asterisk*

Submissions Gallery: Nova in Delphinus (2013 Aug)

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