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C/2020 F3 (NEOWISE) spectrum

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About this observation
Observer
Alun Halsey
Time of observation
11/07/2020 - 03:05
Object
C/2020 F3 (NEOWISE)
Observing location
Reading Berkshire UK
Equipment
Canon 1100D (full spectrum modified)
Canon 80-200mm zoom lens @ 100mm
Static tripod
Star Analyser 100 grating
Exposure
10 seconds @ ISO 800
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Had an attempt at capturing the spectrum of comet NEOWISE on the morning of the 11th July by holding the star analyser in front of the lens,being careful not to disturb focus whilst holding  the grating (1.25" filter) as still as possible I run off this single 10 second exposure to capture this spectrum which clearly shows the Na D sodium emission. Must admit this was the best shot out of ten attempts to get it right :)

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