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ASTRO: NGC 3631 with SN2016bau



 
 
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  #1  
Old April 26th 16, 10:09 PM posted to alt.binaries.pictures.astro
Stefan Lilge
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Default ASTRO: NGC 3631 with SN2016bau

In March I imaged NGC 3631 in three nights. When processing the image I had
a strange artifact at one place and found that the strange spot had a star
in it in the last two nights where no star had been in the first night.
Somehow it only survived sigma stacking in the blue channel and not in any
of the others. This is the first time that a SN appeared during one of my
imaging runs. Even if I had imaged it as the first person I would have no
chance to discover a SN because image processing takes too long for me.
Often much longer than the few weeks that passed here between image
acquisition and processing.
The supernova is the star a bit to the upper right of the galaxy's center.

Taken from Berlin with a 10" Meade ACF at f/8 on a Skywatcher AZ-EQ6 mount,
Trius SX694 camera, 42x10min Lum, 32x10min RGB, scaled down to 0,68"/pixel.

Stefan

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  #2  
Old April 27th 16, 10:33 PM posted to alt.binaries.pictures.astro
Stefan Lilge
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Posts: 2,269
Default ASTRO: NGC 3631 with SN2016bau

....and here is a luminance in full size (0.45 arcseconds/pixel) without the
supernova...

Stefan

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