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S/N is not bad for a V=9.6 star. ... At V=9.6 it is an easy target. ... very high S/N in the range 4200-8000 A and still acceptable down to 3800 A. The insert shows a ...
... of a star close to the horizon appears like a small spectrum with blue up and red down. ... If the slit is not oriented perpendicular to the horizon, this results in a ...
Mira itself could be classified as symbiotic because it has a white dwarf ... A/pixel (spectrum not corrected for atmospheric and instrumental spectral response). ... Nuclear burning expands the shell surrounding the white dwarf that cools down.
Spectrum is not corrected for spectrograph sensitivity and atmospheric ... their core and then start to cool down moving horizontally throught the HR diagram into ...
In the yellow its value goes down to 1,519 and in the red become 1.513. The minimal ... Spectrograph resolution should not be confused with grating resolution.