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Another Spectrum. Beta Carinae
Dear All
I needed to take a spectrum of a standard star to work out the instrument response for my spectrograph. This is then used to correct the spectrum of any other spectrum I take.
There was intermittent cloud last night precluding taking long exposures of T pyx so I chose a bright star that I could image with short exposures namely Beta Carinae.
My camera is only 512 pixels wide so I need to take separate images of the different regions of the spectrum and merge them together. The result is a merge of 6 different regions each taken with 5x60 sec exposures along with 5 x 5 sec exposures of calibration lamps. (neon for the red end and Hg from a compact flouro for the blue end).
I have corrected the spectrum for instrument response and now have a useful graph to correct the spectra I take of T Pyx.
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