Author Archives: Paul M Robertson

The HPF cryostat test drive: sub-milliKelvin temperature stability

Background: the need to cool HPF down to 180K One of the most frequently discussed topics on this blog has been the need to enclose the HPF instrument in a stable, cold environment.  Because HPF will observe stars in infrared … Continue reading

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We Have a Cryostat

If you have been following the blog up to now, you have seen our discussion of the technical requirements and specifications for our cryostat — the giant, temperature-controlled vacuum chamber that will house the HPF instrument.  The cryostat has been in … Continue reading

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The Year in Science: HPF Highlights 2014

It is important to remember that the team building HPF is not comprised of technicians dispassionately filling an order for a new machine, but instead includes many of the scientists who will eventually use the spectrograph for their own research.  … Continue reading

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