Page 230: spectrograph was misprinted as spectograph; corrected here.
The shades and blends between "Yep" and "Ye-oh" alone are sufficient to put a spectrograph of the sun to shame.
I don't know how successfully we can get a spectrograph of the comet, but it's worth an attempt.
A photograph or computer image of a spectrum produced by a spectroscope. Also called spectrogram. See spectroscope.