rodluger
commented
7 years ago Right! I'll add a section on this to the paper, and perhaps you can flesh it out?
On Wed, Jul 12, 2017 at 10:05 AM Eric Agol notifications@github.com wrote:
I forgot to mention: we should look into mid-infrared observations from the ground (this is important if we want to justify JWST time - one shouldn't be able to make a measurement from the ground). The sky brightness is significant, and so perhaps this is a non-starter, but the sky noise decreases as the aperture of the telescope increases, so perhaps a 30-40 meter telescope would have a small enough PSF at 10-20 micron that the star would outshine the sky. The sky is so bright that it quickly saturates detectors from the ground: http://www.gemini.edu/sciops/instruments/mid-ir-resources/mid-ir-observing
The N band https://en.wikipedia.org/wiki/N_band or Q band http://www.gtc.iac.es/instruments/canaricam/MIR.php would probably be best - N band has higher transmission from the ground, but planets will be fainter. Q band has lower transmission, but planets should be brighter; although PSF is larger and sky is bright at that wavelength as well.
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jlustigy
ericagol
I forgot to mention: we should look into mid-infrared observations from the ground (this is important if we want to justify JWST time - one shouldn't be able to make a measurement from the ground). The sky brightness is significant, and so perhaps this is a non-starter, but the sky noise decreases as the aperture of the telescope increases, so perhaps a 30-40 meter telescope would have a small enough PSF at 10-20 micron that the star would outshine the sky. The sky is so bright that it quickly saturates detectors from the ground: http://www.gemini.edu/sciops/instruments/mid-ir-resources/mid-ir-observing
The N band or Q band would probably be best - N band has higher transmission from the ground, but planets will be fainter. Q band has lower transmission, but planets should be brighter; although PSF is larger and sky is bright at that wavelength as well.