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Astrophotography and Sketching >> Sketching

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David Gray
sage
*****

Reged: 08/06/12

Loc: Co. Durham UK
Nova Del 2013: Some Colour Impressions.
      #6121756 - 10/07/13 06:08 AM Attachment (61 downloads)

As with some novae I have followed in the past I have been fascinated by the colours displayed as they develop. In particular one in Vulpecula (1960/70s) came to display an intense mauve/magenta hue (pink to some). If I recall right this was ascribed as it going through the “nebular phase”. More recently one in either Cygnus or Cassiopeia became the most intensely blue star I’ve ever seen!

While conceding the subjectivity of colour perception/judgement and so on (and differences with others’ monitors and such) a few details about these impressions……

Aug 15: Creamy Yellow. Aug 19: slightly more Yellow. Aug 26: Peach! Aug 30: Buttercup Yellow.

Early Sep. it started to display hues that I struggled to name but opted for Bronze/Coppery-Yellows.

Then it reddened markedly and even so could not quite equate it to the redness of carbon stars V Aql or of X Sge which was more near the nova’s brightness then.

The last (Oct 5) observation showed a more definite difference to X Sge: it was now fainter than X but looked slightly more toward red-violet.

David


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Asbytec
Guy in a furry hat
*****

Reged: 08/08/07

Loc: La Union, PI
Re: Nova Del 2013: Some Colour Impressions. new [Re: David Gray]
      #6121782 - 10/07/13 06:38 AM

David, that's amazing. I have never seen anything like it. Really wish I could have observed something that spectacular.

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Jeremy Perez
Carpal Tunnel
*****

Reged: 08/12/04

Loc: Flagstaff, Arizona, USA
Re: Nova Del 2013: Some Colour Impressions. new [Re: Asbytec]
      #6122212 - 10/07/13 11:28 AM

This is incredible, David! The way you crafted your observations into such an informative and captivating information graphic is excellent. Thanks for sharing all your hard work.

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David Gray
sage
*****

Reged: 08/06/12

Loc: Co. Durham UK
Re: Nova Del 2013: Some Colour Impressions. new [Re: Jeremy Perez]
      #6122353 - 10/07/13 12:34 PM

Thanks Norme/Jeremy,

Jeremy got your PM and that will be fine - honoured.!

"Hard work": had it in mind for some time - started to look daunting as the observations piled up; but went pretty smooth!

Regards,
David.


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niteskystargazer
Carpal Tunnel
*****

Reged: 10/05/09

Loc: 41-43'-28" N 87-42'-39" W
Re: Nova Del 2013: Some Colour Impressions. new [Re: David Gray]
      #6122666 - 10/07/13 02:41 PM

David,

Very nice, showing the Color Changes of the Nova Del .

CS,KLU,

,

Tom


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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: Nova Del 2013: Some Colour Impressions. new [Re: niteskystargazer]
      #6124970 - 10/08/13 01:40 PM

Impressive observations! I already did some 10 estimation of the magnitude, but never mentioned any color. Will have a better look next time.

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David Gray
sage
*****

Reged: 08/06/12

Loc: Co. Durham UK
Re: Nova Del 2013: Some Colour Impressions. new [Re: Jef De Wit]
      #6125379 - 10/08/13 04:30 PM

Thanks Tom / Jef,

Yes it's well worth following these for colours which can be quite surprising at times.

Cheers,
David.


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azure1961p
Postmaster
*****

Reged: 01/17/09

Loc: USA
Re: Nova Del 2013: Some Colour Impressions. new [Re: Asbytec]
      #6125859 - 10/08/13 09:13 PM

Quote:

David, that's amazing. I have never seen anything like it. Really wish I could have observed something that spectacular.




Agreed - and I had no idea it reddened like that or I would've looked. I thought it'd dim out and - oh well. The color shift is actually captivating. Serves me right for not being enough of a variable star guy.

Nice - rendering - and presentation David.

Pete

Edited by azure1961p (10/08/13 09:15 PM)


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mikesemmler
sage


Reged: 06/01/09

Re: Nova Del 2013: Some Colour Impressions. new [Re: azure1961p]
      #6126162 - 10/09/13 12:04 AM

This is great, i can not believe it, this is a scetch? Sensational

Michael


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Aquarellia
professor emeritus


Reged: 10/27/12

Loc: Provence, France
Re: Nova Del 2013: Some Colour Impressions. new [Re: mikesemmler]
      #6126380 - 10/09/13 05:46 AM

Super David, a very creative show !

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David Gray
sage
*****

Reged: 08/06/12

Loc: Co. Durham UK
Re: Nova Del 2013: Some Colour Impressions. new [Re: Aquarellia]
      #6126528 - 10/09/13 08:37 AM

Michael / Aquarellia,

Appreciated.

Many thanks,
David.


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