Quote:
Originally Posted by astronobob
Thanx, Andy.
wow, I cant imagine Imaging in Sydney, not with one-shot-color anyway, Hmmm.
One wonders, with the - hmm, 'global-warming' Pollution etc, if conditions are going to improve at all, particularly over the longer term ?
Tho, has been mentioned, this winter has been a unfortunate season 
Rgrds . |
careful about putting global warming in quotes when you're chatting to a climate scientist
(sadly it's real, it's due to us and very troublingly bad news). On topic
astro seeing (so far as I understand it) is driven quite substantially by currents near the surface and by jetstream variations. Surface currents and thermals would be quite a lot affected by concrete/urbanisation in your immediate area, jetstream changes can have a climate component to them but probably not enough to be concerned about, year to year weather and seasonality are more important (eg winter jetstream often over us both). In the Northern Hemisphere change may be an issue, with a more variable jetstream configuration partly attributed to loss of Arctic ice, but it's less of an issue here in the south because the Antarctic continent & sea ice have more stable albedo variations through the year. To be honest, of all the climate impacts that keep me awake at night, seeing changes aren't one of them
Best way to get improved seeing? Move away from jetstreams to the tropics like Chris Go's or Damien Peach's favourite observing sites!