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Observing >> Variable Star Observing and Radio Astronomy

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Special Ed
Postmaster
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Reged: 05/18/03

Loc: Greenbrier Co., WV 38N, 80W
Re: New nova in delphinus<>animation new [Re: Rich (RLTYS)]
      #6064389 - 09/05/13 12:51 PM

Michel & Rich--thanks!

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Dean Norris
Carpal Tunnel
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Reged: 11/05/08

Loc: Santa Cruz, Ca
Re: New nova in delphinus<>animation new [Re: Rich (RLTYS)]
      #6064818 - 09/05/13 04:49 PM

Michael great animation of the nova. The scope you used looks ideal for this kind of observing. I've been making my estimations with my 9x50 finder. Though I also check it out in the main scope as well.

Here's my latest estimations:

6.9 at 6 UT 8/31/13
7.2 at 5:40 UT 9/4/13
7.3 at 5:40 UT 9/5/13

Dean


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SabiaJD
scholastic sledgehammer


Reged: 02/20/05

Loc: Clarks Summit, PA
Re: New nova in delphinus<>animation new [Re: Rich (RLTYS)]
      #6065373 - 09/05/13 10:59 PM Attachment (27 downloads)

Better skies have arrived, was able to get another photo of the Nova with the 77 mm Borg f/6.7 last night.

Tonight with 10 x 50 binoculars I estimated the nova was 7.1 magnitude.

Edited by SabiaJD (09/05/13 11:01 PM)


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Bakes
super member


Reged: 01/06/09

Loc: Stratford, CT
Re: New nova in delphinus<>animation new [Re: SabiaJD]
      #6065391 - 09/05/13 11:19 PM

Great photo series!

Watching the nova tonight, it no longer appears yellowish to me. It seems redder to my eyes. Does anyone else share this perception?


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John_G
sage


Reged: 01/18/10

Re: New nova in delphinus<>animation new [Re: Bakes]
      #6065585 - 09/06/13 04:54 AM

My estimate using my 10x50s on 9/6/13 at 1:30 UT was 7.4 using comp stars 72 and 75.

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Special Ed
Postmaster
*****

Reged: 05/18/03

Loc: Greenbrier Co., WV 38N, 80W
Re: New nova in delphinus<>animation new [Re: John_G]
      #6065642 - 09/06/13 06:29 AM

Nice set of images, John.

@ Dean--yes, my little reflector is good for widefield low power views--I like to include any star patterns or asterisms nearby to help with identification or comparisons. At high power, the mirror is so curved that the coma is really bad.


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RobK
sage


Reged: 07/06/08

Loc: Bright, Vic, Australia
Re: New nova in delphinus<>animation new [Re: Special Ed]
      #6065758 - 09/06/13 08:56 AM Attachment (17 downloads)

Hampered by weather here but finally got a short break from 30 Aug - 3 Sept and managed to get a few spectra of this nova. One spectrum (30 Aug) is attached, pretty pleased with the result as I'm just using a zoom lens on a DSLR & a Star Analyser grating (SA100).

Here's a link to all the spectra I got - I've put them together in an animation that really doesn't show much other than the difference in sky transparency!
http://i727.photobucket.com/albums/ww271/Rob_Kau/30aug-03Septbarampgraphanim.gif

Cheers -


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Special Ed
Postmaster
*****

Reged: 05/18/03

Loc: Greenbrier Co., WV 38N, 80W
Re: New nova in delphinus<>animation new [Re: RobK]
      #6067130 - 09/07/13 12:43 AM

Observed Nova Del at 0245 7 Sept. UT with my 12x36 IS II binoculars. Seeing and transparency both very good. Estimated mag is 7.3.

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SabiaJD
scholastic sledgehammer


Reged: 02/20/05

Loc: Clarks Summit, PA
Re: New nova in delphinus<>animation new [Re: Special Ed]
      #6067437 - 09/07/13 09:34 AM

Thanks, the photos are a bonus to observing this nova with binoculars and the naked eye.

I missed viewing the bright nova Cygnus 1975.


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Rich (RLTYS)Moderator
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Reged: 12/18/04

Loc: New York (Long Island)
Re: New nova in delphinus<>animation new [Re: SabiaJD]
      #6070797 - 09/09/13 07:45 AM

Observed N Del 2013 with my 12x63's last night (9/8)and estimate its mag at 7.2. At this point N Del seems to have leveled off in brightness, being the same for the last few nights.

Rich (RLTYS)


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MtnGoat
Carpal Tunnel
*****

Reged: 02/18/07

Loc: Columbia Gorge, WA
Re: New nova in delphinus<>animation new [Re: Bakes]
      #6071295 - 09/09/13 01:05 PM

I thought it was just me, but last night it was so much redder I realized it couldn't be. I noticed it going from what was very close to white near peak to a more yellowish tinge about a week ago, and last night thought it had acquired a more ruddy reddish tinge.

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C_Moon
Pooh-Bah
*****

Reged: 10/23/09

Loc: Beneath the arms of Cassiopeia
Re: New nova in delphinus<>animation new [Re: MtnGoat]
      #6072303 - 09/09/13 11:01 PM

Just viewed now after not being able to for a few days and I was struck by how red it looked. Didn't see the previous posts until just now.

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canukLX90
professor emeritus


Reged: 12/25/08

Loc: B.C. Canada
Re: New nova in delphinus<>animation new [Re: C_Moon]
      #6072589 - 09/10/13 04:28 AM Attachment (29 downloads)

I have noticed the red color in my images over the last
couple of times. Here is what I took this evening.
10 X 30 seconds @ ISO 800 with modded 450D DSLR and
PowerNewt @ F 2.8 No processing done other than crop from
full frame.

PJ


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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: New nova in delphinus<>animation new [Re: RobK]
      #6073125 - 09/10/13 12:17 PM

Thanks Rob for sharing - very impressive and colourful results. Hope you post animation on Youtube!

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MtnGoat
Carpal Tunnel
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Reged: 02/18/07

Loc: Columbia Gorge, WA
Re: New nova in delphinus<>animation new [Re: nytecam]
      #6073132 - 09/10/13 12:22 PM

I've got about 25 nights worth now myself, at some point I'll figure out what to do about them. 20, 10, 2 sec exposures at 6400 iso.

I did an entire summers worth of SS cygni a few years ago, caught three bursts... I never did do the animation!


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Special Ed
Postmaster
*****

Reged: 05/18/03

Loc: Greenbrier Co., WV 38N, 80W
Re: New nova in delphinus<>animation new [Re: MtnGoat]
      #6074428 - 09/11/13 05:55 AM

Observed Nova Del 0115 11 Sept UT with my 12x36 binoculars. Estimated the mag to be 7.3-7.4--transparency not as good as my last observation and a little moonlight. Didn't notice any color but I don't see color very well.

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Olivier Thizy
journeyman


Reged: 02/17/07

Loc: France
Re: New nova in delphinus new [Re: Special Ed]
      #6076554 - 09/12/13 09:00 AM

Hello,


I have been following the nova in spectroscopy with an Alpy 600 spectrograph on a small 85mm refractor since the begining. Weather is getting poor here but I have done some animation/graphs showing the changes.


See: http://www.spectro-aras.com/forum/viewtopic.php?f=5&t=682&start=110#p...

Graph:
[image]http://www.spectro-aras.com/forum/download/file.php?id=1087[/image]

2D color spectral evolution:
[image]http://www.spectro-aras.com/forum/download/file.php?id=1088[/image]


ARAS forum includes spectral observations from about 35 observers and multiple spectrographs with multiple resolution. Those spectra with scientifical interest are archived on ARAS database (more than 600 spectra) and are available for download so you can have a look at my spectra FITS file there:
http://www.astrosurf.com/aras/Aras_DataBase/Novae/Nova-Del-2013.htm


There is also an ARAS web page with explanation from Steve Shore, a professional astronomer who is helping us to better understand the astrophysics behind the scene. I have really enjoyed his explanations so far... :-)
http://www.astrosurf.com/aras/novae/Nova2013Del.html


This is really an exceptionnal object to follow up, specially in spectroscopy!

Cordialement,
Olivier Thizy


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MtnGoat
Carpal Tunnel
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Reged: 02/18/07

Loc: Columbia Gorge, WA
Re: New nova in delphinus new [Re: Olivier Thizy]
      #6077031 - 09/12/13 01:37 PM

Yup, looking a leetle bit redder every night! Very cool. I love this thing!

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RobK
sage


Reged: 07/06/08

Loc: Bright, Vic, Australia
Re: New nova in delphinus new [Re: Olivier Thizy]
      #6077695 - 09/12/13 08:44 PM

Phenomenal work Olivier, congratulations to you and all the other ARAS 'spectroscopists'! Great demonstration of how amateurs can concentrate their efforts and skills to produce unprecedented coverage and a scientifically-valuable archive.

Cheers -

Rob


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Dean Norris
Carpal Tunnel
*****

Reged: 11/05/08

Loc: Santa Cruz, Ca
Re: New nova in delphinus new [Re: RobK]
      #6082511 - 09/15/13 05:47 PM

My latest magnitude estimations of the nova:

7.6 at 8 UT on 9/6/13
7.4 at 8:10 UT on 9/11/13
7.7 at 5:30 UT on 9/15/13

Last night I observed the nova with 7x50 binos, 9x50 finder and at 51x in my 10" f/6 newt. In the newt it had a red color which wasn't seen in the finder or binos. It's amazing how fast these changes occur. When the nova was brightest, I saw it's color as yellow.

Dean


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