Re: SAT TRACK PHOTOS
Raoul Behrend (Raoul.Behrend@obs.unige.ch)
Thu, 30 Sep 1999 17:31:01 +0200 (MET DST)
Hello Jay, Conrad and the others,
JAY RESPLER:
> The photographer, Conrad, has sent me scans of his 6 original photos.
> I posted them along with his descriptions on my Sky Views web site, below.
> Go to page 2.
> At bottom of page in Photo Gallery, find
> Satellite trails. Orion Nebula.
[ http://mars.superlink.net/jrespler/skyviews.htm ]
Well, on these scans, we can see things about which we can speak, now !
> Looks like there are some asteroid trails also [...]
Just a few comments:
- Horizontal blue lines. As Conrad say, they are scratches from the laboratory.
I suggest Conrad to go only once again to this half-our lab: just
to ask for $$$ in compensation of the "destruction" of negatives with very
good pictures <;3)~~~
- Asteroids: Mmmm. I'm sure at 98% that there are no asteroid trails.
( There seems to be no logical links between trails, and to make
bright and long trails, they must be very luminous: and de facto
already detected be automated sky-scanners LINEAR, LONEOS, SpaceWatch, aso.)
I'm also sure at 98% there are point-like ones (or few-"pixels"-elongated).
- Origin: I persist to "vote" for plane for the 4-lines, and geostationnary
satellites for the 2-lines. This is motivated by similar ccd pictures
I made at Geneva observatory which is very near the track that the planes
follow to ground at airport.
Best regards, Raoul
-----
Observatoire de Genève
Raoul Behrend
CH-1290 Sauverny / Suisse
Raoul.Behrend@Obs.UniGe.CH
http://obswww.unige.ch/~behrend
"Herbe à Nicot? Herbe à nigaud!"