Stephen Some of the biggest telescopes have been atop tall islands in the middle of the ocean like Hawaii and Grand Canaria to get away from light pollution and dust and aerosol scattering on land.
Douglas I mentioned the UV because the medical concernns Andrew mentioned largely arise from short wavelength photons. Can you tell us how stratospheric aerosols might effect the preformance of the laser guide stars on which deformable mirror correction systems depend- would ring images be a problem at the diffraction limit? The dimensionless aerosol scattering efficiency coefficient Ms is of the order of the Mie integral of the number density over the range from r max to r min- *Q* Ms (r) πr2n (r) dr*Q*Ms (r) π* r2N* (r)* d*r On Sunday, April 7, 2019 at 10:08:37 AM UTC-4, Stephen Salter wrote: > > Russell > > Some of my best friends are astronomers but few of them use telescopes in > mid ocean so you and I can remain on good terms. > > Stephen > Emeritus Professor of Engineering Design. School of Engineering, > University of Edinburgh, Mayfield Road, Edinburgh EH9 3DW, Scotland > [email protected] <javascript:>, Tel +44 (0)131 650 5704, Cell 07795 203 > 195, WWW.homepages.ed.ac.uk/shs, YouTube Jamie Taylor Power for Change > On 07/04/2019 14:31, Russell Seitz wrote: > > Why would reductions in the downwelling tropospheric light flux > increase any of the above? I'd instead ask instrumental astromomers > what they think SO2 scattering would do in the UV , as they have a lot to > lose from scattered light, which can cost them contrast and degrade the > signal to noise ratio in interferometry and spectroscopy. > > Try the Magellan and OWL teams > > On Wednesday, April 3, 2019 at 7:47:35 AM UTC-4, Andrew Lockley wrote: >> >> Has there been any investigation of SRM effects on vision? Eg perceived >> glare, macular degeneration, corneal sunburn, vision development in >> infants, object recognition when driving (and their equivalent in animals)? >> >> Andrew Lockley >> > -- > You received this message because you are subscribed to the Google Groups > "geoengineering" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] <javascript:>. > To post to this group, send email to [email protected] > <javascript:>. > Visit this group at https://groups.google.com/group/geoengineering. > For more options, visit https://groups.google.com/d/optout. > > -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.
