Re: M42 "sat photo"
Johannes Mueller (joh.mueller@rz-online.de)
Thu, 23 Sep 1999 22:40:45 +0200
Hi,
> > You are too quick here!
>
> Actually, not. I spent several hours doing a wide range of
> satellite searches. There is absolutely no way these are
> satellites. Try it yourself with SkyMap. Set the limiting
> magnitude as dim as you want. Not one sunlit satellite
> makes a N-S pass on March 7 anywhere near M42 as viewed
> from Kelly, NC. Let alone two. Plenty of satellites at
> skew angles within 10 degrees tilt of N-S, but none within
> 2 degrees. And the fact that many satellites KNOWN to have
> crossed the FOV are not visible in the picture says that only
> the brightest satellites could have been in the picture. --Rob
I would like to add here:
The exposure time was 40 minutes. A Sat crossing the field of view in more
less time should have left a track which is visible in the regions with dark
background. The track should not (or more less) be visible in the bright
regions of M42, because of after-exposing (Nachbelichtung in german).
The photo shows the opposite of what we should expect. The nearer M42, the
brighter the track.
In my humble opinion: Definitely no Sats.
Johannes