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M31

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16 years 1 month ago #74814 by dmcdona
Replied by dmcdona on topic Re:M31
This just in:

M31N 2008-11b (BRIGHT NOVA IN M31)
S. Nakano, Sumoto, Japan, reports the discovery by Koichi Itagaki (Teppo-cho, Yamagata, Japan) of a bright apparent nova in M31 on unfiltered CCD survey frames taken on Nov. 26.498 UT using a 0.60-m f/5.7 reflector.
The new object is located at R.A. = 0h42m26s.50, Decl. = +42o15'36".7 (equinox 2000.0). Nothing is visible at this position on the Digitized Sky Survey (DSS) to limiting magnitude 21. Available magnitudes from Itagaki for the apparent nova, designated M31N 2008-11b: 2007 Oct. 13.635, [20.5;
2008 Nov. 26.498, 19.0; 26.538, 18.8; 26.548, 18.8; 26.561, 18.6; 26.564, 18.5; 26.565, 18.4; 26.581, 18.2; 28.642, 14.5; 28.643, 14.5; 28.645, 14.6; 28.651, 14.5; 28.663, 14.6; 28.714, 14.7; 28.739, 14.9. Nakano forwards the following position end figures measured by K. Kadota (Ageo, Japan, 0.25-m f/5 reflector + unfiltered CCD): 26s.51, 36".7 (mag 14.7 on Nov.
28.694). Kadota adds that nothing is visible on a red DSS image from 1989.


It could be on your image - it'd be worth analysing it and even sending it in to the IAU...

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16 years 1 month ago #74817 by dmcdona
Replied by dmcdona on topic Re:M31
I had a quick look - I think you have it.

Well worth submitting the data. Even better if you can get a light-curve based on the nova's mag in each individual frame (though it mightn't show any increase/decrease over 45 mins). It would be very useful science nonetheless.

If you need help, just let me know.

Dave

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16 years 1 month ago #74818 by daveg
Replied by daveg on topic Re:M31
please point it out Dave

DaveG

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16 years 1 month ago #74819 by daveg
Replied by daveg on topic Re:M31
Ah Phoenix I've been there already

www.irishastronomy.org/forum?func=view&catid=29&id=74201

Dave

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16 years 1 month ago #74821 by dmcdona
Replied by dmcdona on topic Re:M31
Here's the finder image

www.astroshack.net/images/Capture.JPG

The nova is in the center of the red box, drawn in yellow. There is nothing of that magnitude in that location. I checked your image and there is a similar object in magnitude to the nova in the same location.
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16 years 1 month ago - 16 years 1 month ago #74822 by daveg
Replied by daveg on topic Re:M31
is this it??
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Last edit: 16 years 1 month ago by daveg.

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