Date + Time
............................... 18 / 8/2012 -
09:00 UTC Location .................................... Remote
imaging from iTelescope.net - Sliding spring Australia Optics .........................................
Planewave
T30 0.50-m f/6.8 astrograph + CCD + f/4.5 focal reducer Tools
..........................................
Maxim dl Camera .....................................
FLI-PL6303E CCD
camera Exposure Time.......................
Luminance: --- R: 10X 60sec More Details ...........................
Environment Temperature : --- Camera Temperature -35οC Mount .......................................
Planewave Guiding ....................................
Unguided Processing Details ................ Photoshop ,
Maxim , Notes ........................................ Weather:
--- - Transparence: --- - Humidity : 36%
Target details ......................... Nova
2013 Delphinus , discovered by Mr
Koichi
Itagaki (Teppo-cho, Yamagata, Japan)
on 14th of August 2013 with magnitude 6.8
A nova (plural
novae or novas) is a
cataclysmic
nuclear explosion in a
white dwarf
star. It is caused by the
accretion of hydrogen on to the surface of the star,
which ignites and starts
nuclear fusion in a runaway manner. Novae are not to be
confused with
supernovae or
luminous red novae. A nova is a sudden brightening of a
star. Novae are thought to occur on the surface of a white
dwarf star in a
binary system. If these two stars are close enough,
material from one star can be pulled off the companion
star's surface and onto the white dwarf.
Subtypes
Novae are classified according to the
light curve development speed, thus in
- NA: Fast novae, with a rapid
brightness increase, followed by a brightness decline of
3 magnitudes — to about 1⁄16
brightness — within 100 days.
- NB: Slow novae, with a 3
magnitudes decline in 150 days or more.
- NC: Very slow novae, staying at
maximum light for a decade or more, fading very slowly.
It is possible that NC type novae are objects differing
physically very much from normal novae, for example
planetary nebulae in formation, exhibiting
Wolf-Rayet star like features.
- NR/RN:
Recurrent novae, novae with two or more outbursts
separated by 10–80 years have been observed
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