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I can find a calibration with the H beta being the second "dip"
The dispersion comes out very high at 4.8A/pixel - a bit high, 10A/pixel would be better.
A longer exposure (or stacked exposure) will help the SNR.
The spectral shape looks odd???
What do you think?
Last edited by Merlin66; 13-01-2015 at 09:41 AM.
Reason: correction!
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