Author Archives: Paul M Robertson

The Plot Thickens: Habitable-Zone Exoplanets around Proxima Centauri and TRAPPIST-1

Introduction As the time approaches to commission HPF on the Hobby-Eberly Telescope, we are learning that the spectrograph will be coming online in truly exciting times for exoplanet science!  The detection of habitable-zone exoplanets around two nearby M dwarf stars—including … Continue reading

Posted in Exoplanet Science, HPF Science | Leave a comment

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

Posted in HPF Hardware, Project Development | Leave a comment

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

Posted in HPF Hardware, Project Development | Leave a comment