Jump to content


Photo

bright nova in evening sky

  • Please log in to reply
14 replies to this topic

#1 nytecam

nytecam

    Voyager 1

  • *****
  • Posts: 11462
  • Joined: 20 Aug 2005
  • Loc: London UK

Posted 17 August 2013 - 04:09 AM

Nova Del 2013 discovered this week and now ~mag 4 and brightening so brightest nova for over a decade and naked eye for those in dark skies. For the rest of us a good video target @ RA 20h 23m 31s Dec +20o 46' and maybe take a spectrum too for those with a grating like Rainbow or Staranalyser less than an inch from sensor as in my montage here.

The spectrum exposure with my new SX HX9 cam ~1/10s !! The captured spectrum and vertical expand [=PaintShopPro] plus 2D profile [=SX s/ware] :grin:

Attached Files



#2 mclewis1

mclewis1

    Thread Killer

  • ****-
  • Posts: 10891
  • Joined: 25 Feb 2006
  • Loc: New Brunswick, Canada

Posted 17 August 2013 - 09:19 AM

No longer brightening ... now appears to be falling off as fast as it brightened. Better catch it while you can.

AAVSO light curve for Nova Del2013

#3 nytecam

nytecam

    Voyager 1

  • *****
  • Posts: 11462
  • Joined: 20 Aug 2005
  • Loc: London UK

Posted 19 August 2013 - 09:51 AM

No longer brightening ... now appears to be falling off as fast as it brightened. Better catch it while you can.

AAVSO light curve for Nova Del2013

Thanks Mark - not particularly interested in the nova's magnitude but its developing spectrum - a totally different subject :-)

#4 nytecam

nytecam

    Voyager 1

  • *****
  • Posts: 11462
  • Joined: 20 Aug 2005
  • Loc: London UK

Posted 22 August 2013 - 05:21 PM

and so it changes - viewed in realtime tonight with cursor on raw linear spectrum :grin:

Attached Files



#5 mclewis1

mclewis1

    Thread Killer

  • ****-
  • Posts: 10891
  • Joined: 25 Feb 2006
  • Loc: New Brunswick, Canada

Posted 23 August 2013 - 10:54 AM

Maurice,

Very nice results. It's been very interesting following some of the changes to the Nova's spectrum over it's brightening and fall off.

I notice that today's APOD is also a Nova spectrum. Link to image

The strong Ha absorption line and the multiple lines in the light blue line up nicely with your images.

Do you have anymore images to illustrate the changes over time?

#6 nytecam

nytecam

    Voyager 1

  • *****
  • Posts: 11462
  • Joined: 20 Aug 2005
  • Loc: London UK

Posted 24 August 2013 - 04:42 AM

Maurice, Very nice results. It's been very interesting following some of the changes to the Nova's spectrum over it's brightening and fall off. I notice that today's APOD is also a Nova spectrum. Link to image The strong Ha absorption line and the multiple lines in the light blue line up nicely with your images. Do you have anymore images to illustrate the changes over time?

Many thanks Mark - interesting, but IMHO a modest, APOD - the colour although pleasing to the eye, suppresses the lines in the spectrum from my experience.

My 5 day sequence of the last week below - the 'rise' of the emission lines is characteristic of a nova at this stage. A Rainbow Optics grating 'filter' place ~20mm in front of the CCD sensor splits the starlight by wavelength and is offset to the side of the 'real' image of the star to the left.

When the cursor is places on the downloaded spectrum the profile is instantly seen in realtime in a pane beneath the main field image and fascinating to watch in an exposure loop of typically 2 or 3 seconds - sort off instant science ! :grin:

ps: A decade ago I asked Starlight Xpress for this 'row profile' option for my spectroscopy and they incorporated it into all mono cam s/ware since!

Attached Files



#7 mclewis1

mclewis1

    Thread Killer

  • ****-
  • Posts: 10891
  • Joined: 25 Feb 2006
  • Loc: New Brunswick, Canada

Posted 24 August 2013 - 10:15 AM

Maurice,

Many thanks for the effort ... that is just fascinating.

#8 A. Viegas

A. Viegas

    Apollo

  • *****
  • Posts: 1062
  • Joined: 05 Mar 2012
  • Loc: New York City/ CT

Posted 25 August 2013 - 09:40 AM

Caught it last night with my CPC1100 and MCX... still quite 'bright' given how dim the surrounding field is, mag 11-12 labeled stars here in this plate sovle: Delphinus SN2013

Al

(60 second exposure, F5 or so using a Lumicon Deep Sky filter... no processing, just screen grab)

Attached Files



#9 nytecam

nytecam

    Voyager 1

  • *****
  • Posts: 11462
  • Joined: 20 Aug 2005
  • Loc: London UK

Posted 29 August 2013 - 01:48 PM

Nice shot :bow: Here's my mixed bag of spectra from last three nights - stars are not just dots ! ;)

#10 nytecam

nytecam

    Voyager 1

  • *****
  • Posts: 11462
  • Joined: 20 Aug 2005
  • Loc: London UK

Posted 17 September 2013 - 12:20 PM

My video clip of the nova and its spectrum taken this summer :grin:

#11 mclewis1

mclewis1

    Thread Killer

  • ****-
  • Posts: 10891
  • Joined: 25 Feb 2006
  • Loc: New Brunswick, Canada

Posted 17 September 2013 - 12:32 PM

Very cool video, nice work. :waytogo:

Not thrilled with the "Star Wars" text, but I guess others will like it. :shrug:


Thanks Maurice

#12 nytecam

nytecam

    Voyager 1

  • *****
  • Posts: 11462
  • Joined: 20 Aug 2005
  • Loc: London UK

Posted 18 September 2013 - 02:38 AM

Very cool video, nice work. :waytogo: Not thrilled with the "Star Wars" text, but I guess others will like it. :shrug: Thanks Maurice

Thanks Mark - the "Star Wars" text culled from my earlier 2009 nova video saved "reinventing the wheel". :grin:

BTW my Nytecam Channel on Youtube grosses nearly a million hits so keep clicking :lol:

#13 Puck Ja

Puck Ja

    Apollo

  • *****
  • Posts: 1022
  • Joined: 21 Nov 2012
  • Loc: OK, USA

Posted 18 September 2013 - 09:08 AM

This is a cool presentation and great effort. Very educational on technique and information rich. I suggest you post it to other forums as well for the audience who are more interested in and appreciate this quality research work!! :waytogo:

#14 Chris A

Chris A

    Apollo

  • -----
  • Posts: 1140
  • Joined: 03 Feb 2007
  • Loc: Toronto, Canada

Posted 18 September 2013 - 10:37 AM

Excellent job done on your video Maurice, I really enjoyed it! Thank you.

Chris

#15 Dragon Man

Dragon Man

    Vanguard

  • *****
  • Posts: 2058
  • Joined: 07 Mar 2006
  • Loc: Snake Valley, Australia

Posted 18 September 2013 - 11:23 AM

I enjoyed it too.

Good work Maurice :)






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics