pesky.cat@virgin.net ("Pesky") writes: > I am somewhat new to satellite observing. I am enjoying it though I > cannot shake the feeling that we are looking at manmade objects rather > than nature. Your ambiguous feeling is shared by many. rmcconahy@earthlink.net ("Ralph McConahy") writes: > Since Hubble is at a 28 degree > inclination, the further north or south from the equator you are the more > atmosphere you will be looking through when (if) you see it. If you are too > far north or south on the earth (above or below 38 degrees N or S latitude) > then you won't see it at all. The 3.0 in the top line of the elset means I realize you were writing under the burden of a pseudonymous correspondent who failed to mention his latitude and longitude, but 38 degrees is a very conservative limit. HST is routinely seen here at altitude 16 degrees. I'm sure there are countless observers further North who make the effort to see her, also (I'd mention South out of respect for our fine upside-down contributors, but we haven't heard much from those below -38 latitude). molczan@home.com ("Ted Molczan") writes: > By exercising little or no control over our light emissions, we humans > created light pollution, which has largely ruined astronomy for those > in and near cities. Thanks so much for your insightful and wise message. It omits mention of the contribution of the air transport industry in dumping vast quantities (does anyone know the actual amount per year?) of waste cloud into the atmosphere. NASA has been able to measure the effect quantitatively, which, based on my recollection of earlier days, is quite substantial. Regrettably, more light and more cloud interact synergistically. IDA, http://www.darksky.org, has many details on the win-win-win nature of efforts for more effective lighting, less wasted fuel and money, and darker skies. Win-win-win. Cheers. Walter Nissen wnissen@tfn.net -81.8637, 41.3735, 256m elevation --- Did anyone see the article on "Project Echelon" on "60 Minutes" a week or so back? If you did, you presumably have a hightened appreciation for Lord Acton's immortal words: Power corrupts. Absolute power corrupts absolutely. ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Thu Mar 09 2000 - 08:50:34 PST