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Observing >> Deep Sky Observing

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norden
sage


Reged: 09/08/08

Loc: Norden
New nova
      #6026418 - 08/15/13 02:22 AM

Discovered by Koichi Itagaki, Yamagata, Japan, using 0.18-m reflector + unfiltered CCD. This Nova was confirmed on the frames taken on August 14.750 UT using 0.60-m f/5.7 reflector + unfiltered CCD after discovery. Then CCD magnitude is 6.3.

http://www.cbat.eps.harvard.edu/unconf/followups/J20233073+2046041.html

Mikael Anderlund


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Sasa
professor emeritus


Reged: 11/03/10

Loc: Ricany, Czech Republic
Re: New nova new [Re: norden]
      #6027687 - 08/15/13 05:27 PM

Just saw it with 8x40. It is even brighter now, my estimate from 20:30UT is V=5.0. I could barely glimpse it with my eyes from my backyard.

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JonnyH
newbie


Reged: 02/24/11

Re: New nova new [Re: Sasa]
      #6027716 - 08/15/13 05:42 PM

What did I see? I observed a very bright flash and shortly after another lesser flash. I was perplexed...this morning I read about the nova in the same location. No has reported what I saw on the web. Is it even possible that I witnessed such massive explosions from the nova? I've been meteor shower watching lately...it wasn't one of those.

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GlennLeDrew
Postmaster
*****

Reged: 06/18/08

Loc: Ottawa, Ontario, Canada
Re: New nova new [Re: JonnyH]
      #6027734 - 08/15/13 05:52 PM

Johnny,
Novae do not 'flash' (and certainly not on and off) on scales of a second. Brightness changes of significance are far more gradual, measuring in minutes (or hours) while brightness increases immediately after the detonation. A brief flash in the sky is most commonly from a satellite or meteor.


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JonnyH
newbie


Reged: 02/24/11

Re: New nova new [Re: GlennLeDrew]
      #6027794 - 08/15/13 06:24 PM

I know those things to be true that's why it defies me. There was no movement to the event. My first skeptical thought was satellite or aircraft but the second bright flash was in the same location less than 10 seconds later. At first my brain said Supernova but then I thought "no way"
So while I understand why your comment is accurate I still know what I saw. I learned of the nova this morning when looking for explanations to the event. Still scratching my head for a good explanation.


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Peter Natscher
professor emeritus


Reged: 03/28/06

Loc: Central Coast California
Re: New nova *DELETED* new [Re: norden]
      #6027918 - 08/15/13 07:52 PM

Here's a link to the sky map showing exact nova location for observing with your binoc's.

http://www.universetoday.com/104103/bright-new-nova-in-delphinus-you-can-see-...

Edited by Peter Natscher (08/15/13 11:05 PM)


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AstroTatDad
Pooh-Bah
*****

Reged: 04/22/13

Loc: Los Angeles - San Diego
Re: New nova new [Re: Peter Natscher]
      #6028178 - 08/15/13 10:27 PM

Need some help from those that have seen it in a 8" scope. I did a sketch of it last night, but got a few comments saying it was not it, that was posted above the Nova. Please check out my sketch and report here http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/6028062/page...

Edited by AstroTatDad (08/15/13 10:28 PM)


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PJ Anway
Double-Star Observer
*****

Reged: 06/04/03

Loc: North Coast
Re: New nova new [Re: JonnyH]
      #6028633 - 08/16/13 07:12 AM

Jonny,

Perhaps it was an Iridium flare, they can look like you describe. Here is some info on them:

Iridium Flare


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rinalmj
sage
*****

Reged: 11/23/09

Loc: Saxonburg, PA
Re: New nova new [Re: PJ Anway]
      #6028722 - 08/16/13 08:45 AM

I saw a couple flashes last night and see them regularly. There are several causes that I know of: planes, fireworks (even very distant), flaring (from gas wells or plants), and lightning (again, even very distant)

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Special Ed
Postmaster
*****

Reged: 05/18/03

Loc: Greenbrier Co., WV 38N, 80W
Re: New nova new [Re: PJ Anway]
      #6028776 - 08/16/13 09:24 AM

Quote:

Jonny,

Perhaps it was an Iridium flare, they can look like you describe. Here is some info on them:

Iridium Flare




PJ is on to something here. I saw an iridium flare last night (9:32 PM EDT) go right through the Sagitta/Delphinus/Vulpecula area where the nova is located. Depending on Jonny's location, he may have seen it, too.

I located the nova last night after the iridium flare happened. I estimated its magnitude at ~4.9 at 0230 UT on 16 August by comparing it to Eta Sge and 29 Vul. Report and sketch here.


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Jeremy Perez
Carpal Tunnel
*****

Reged: 08/12/04

Loc: Flagstaff, Arizona, USA
Re: New nova new [Re: Special Ed]
      #6028901 - 08/16/13 10:48 AM

The nova was a straightforward, naked eye catch last night from my back yard. I was pretty wiped out & ready for bed when I went out to give it a shot, so I neglected to estimate magnitude. Nice to see the sketch with NGC 6905, Michael!

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Special Ed
Postmaster
*****

Reged: 05/18/03

Loc: Greenbrier Co., WV 38N, 80W
Re: New nova new [Re: Jeremy Perez]
      #6028986 - 08/16/13 11:43 AM

Thanks, Jeremy. Hope you get a chance to revisit with a higher energy level. I think forecast conditions here tonight will allow me a chance to see if I can spot it with the unaided eye.

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EJN
Carpal Tunnel
*****

Reged: 11/01/05

Loc: 53 miles west of Venus
Re: New nova new [Re: Special Ed]
      #6029167 - 08/16/13 01:07 PM Attachment (46 downloads)

This is an image I took last night with my Canon S5, constellation lines
added to Delphinus & the nova is arrowed.


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okieav8rModerator
I'd rather be flying!
*****

Reged: 03/01/09

Loc: Oklahoma!
Re: New nova new [Re: EJN]
      #6029444 - 08/16/13 03:51 PM

I'm headed up to my folk's farm this afternoon, and hope to get a look at it tonight.

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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: New nova new [Re: okieav8r]
      #6029581 - 08/16/13 05:13 PM Attachment (22 downloads)

My lo-res spectrum of Nova Del [blue] in late dusk tonight with Altair spectrum [grey] for reference - note the weak Halpha and Hbeta in emission characteristic of a nova at outburst. Halpha should become dominant over the next week or so

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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: New nova new [Re: nytecam]
      #6029805 - 08/16/13 07:51 PM Attachment (28 downloads)

My pic of nova fov - on Sloan DSS a faint ~m18 blue star seems centred on the nova

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Cotts
Just Wondering
*****

Reged: 10/10/05

Loc: Toronto, Ontario
Re: New nova new [Re: nytecam]
      #6030002 - 08/16/13 10:22 PM

I just caught it a few minutes ago in 15x70 binos. The limiting magnitude is about 3.5 here with Albireo barely visible and all the stars in Delphinus invisible naked eye. Seems about mag 4.0-4.5 in the binos and I have no doubt that folks can see it naked eye from darker skies....

Time of observation was 2013 08 17, 02h15m, UT

I'm going to take the 6" out to have a go to see its colour, if any....

Back soon...

Dave


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greenglass
scholastic sledgehammer
*****

Reged: 01/22/06

Loc: Hamilton. Ontario, Canada
Re: New nova new [Re: Cotts]
      #6030026 - 08/16/13 10:36 PM

in 7x50s it looks pale yellow

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blb
Post Laureate


Reged: 11/25/05

Loc: Piedmont NC
Re: New nova new [Re: Cotts]
      #6030037 - 08/16/13 10:44 PM

Quote:

I just caught it a few minutes ago in 15x70 binos. The limiting magnitude is about 3.5 here with Albireo barely visible and all the stars in Delphinus invisible naked eye. Seems about mag 4.0-4.5 in the binos and I have no doubt that folks can see it naked eye from darker skies....

Time of observation was 2013 08 17, 02h15m, UT



Way to go Dave, I too just came in from looking with my 10x50 binoculars. The limiting magnitude is about 3.5-4.0 here with Albireo barely visible and all the stars in Delphinus and Sagitta invisible to the naked eye. Remembering the approximate location and armed with my S&T Pocket Sky Atlas, I sat down in a chair in the back yard and started picking out the stars in the atlas. Having located the field of the nova, there was a bright star where none was shown in the atlas. Comparing this star to the magnitudes shown on the finder chart in Peter Natscher's above post, I would estimate the magnitude to be between 5.0-5.3, and the limiting magnitude for my binoculars was about 7.0 to maybe a little fainter.
Time of observation was 2013 08 17, 02h21m, UT


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Cotts
Just Wondering
*****

Reged: 10/10/05

Loc: Toronto, Ontario
Re: New nova new [Re: Cotts]
      #6030053 - 08/16/13 10:54 PM

Colour report. No question it is a very pale yellow. Not nearly as orange as Gamma Sge, (Mag 3.5, color index +1.56), nearby. It is distinctly yellower than Alpha Del (Mag 3.77, CI -0.04). Although too faint, for a true comparison, I think the nova is about as yellow-white as Altair (mag 0.93, CI +0.27). It seems to be about the same as Beta Del as well (mag3.63, CI +0.45).

6" MakNewt, using 50x, 100x and 130x. 2013 08 17, 02h 30m UT


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