Congratulations to Resident Astronomer John Caldwell on his retirement! It is bittersweet to see Anneke and you leave, but we know you are heading on a new and exciting adventure. Thank you for your many years of dedicated service. Safe travels and keep us posted!
Monthly Archives: March 2018
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The week of February 26, 2018
This week we continued with HPF and Laser Frequency Comb (LFC) commissioning. We made a lot forward progress in getting spectra with the comb and had our official “first light”. Below are a few pictures that might help visualize some of what transpired.
![](https://sites.utexas.edu/het/files/2018/03/SpectrumofStarandLFC-300x237.png)
A part of the spectrum from HPF which shows the very regular picket fense of emission lines generated from the LFC just below a stellar spectrum. The spectra are stacked up in an echellogram.