and Spectra from August 17th, 2013
| A new star has appeared
in our evening sky - the brand new Nova Delphi, just discovered
a few days ago. Located only .7 degrees north of the planetary
NGC6905, this currently 4.5 magnitude object appears somewhat
yellowish in the eyepiece yet a bluish tint on the images. There
are blue and UV wavelengths that this object is emitting, but
the eye cannot see. I set up the 12.5 inch last night and in
a very brief hole in the monsoon clouds and a half moon in the
sky, was able to get some images in 25mph winds and a grating
spectra. Here are our results!
with a Hutech modified Canon XTi set for ISO800 and four 12 second
exposures stacked. The wind made the telescope tube blow around
so much that only a fraction of the images I took were any good.
The nova is the bright star seen here above center. The field
is .75 degrees wide.|
different images were combined here to make this presentation.
The background image is the spectra using a 100 lpmm grating
with the 12.5" and the DMK51 planetary imaging camera. Hydrogen
and possible iron lines can be seen in this complex spectrum.
It has been calibrated for instrumentation response with an F
type star. The inset to the upper right is a black and white
image, taken with the DMK51 just before I put in the Star Analyzer
grating showing the field around the nova. Just under the graph
is the actual image of the spectra set to match the synthetic
profile in color below it.|
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