Re: Re:DSP 23 in trouble

From: John Locker (
Date: Wed Nov 26 2008 - 09:22:03 UTC

  • Next message: John Locker: "Re: Re:DSP-23 in trouble"

    We have a number of lurkers on the list Greg who grab any info they can from 
    SeeSat and dress it up.
    Dont know who they are , but on a number of occassions info posted here has 
    appeared , literally hours later , in "press releases"
    They never attribute the comments , or even , AFAIK  ask permission to use 
    SeeSat as a source.
    I have often thought of putting up some spurious info to see how long it 
    takes for it to "hit the press" , but then that would not be in the spirit 
    the group.
    Would the lurkers please step forward ??????
    ----- Original Message ----- 
    From: "Greg Roberts" <>
    To: <>
    Sent: Wednesday, November 26, 2008 6:50 AM
    Subject: Re:DSP 23 in trouble
    > Good morning
    > Ive just read the press release on the failure of DSP 23.
    > Maybe I am too much of a stikler for accuracy but, to the best of my 
    > knowledge, there are one or two inaccuracies in the report as follows:
    > "several amateur astronomers had reported that DSP 23, the last of the 
    > U.S. missile-warning satellites built by Northrop, and launched in 
    > November 2007, had stopped transmitting in mid-September."
    > " some amateur astronomers, who use optical and radio telescopes to track 
    > objects in space, suggested the DSP satellite may have been adrift in 
    > geosynchronous orbit, which could pose a danger to other satellites 
    > operating in that orbit."
    > As far as I am aware I was the first and only one to identify that DSP F23 
    > was not transmitting - see SeeSat report "Optical-some-15 November 2008" 
    > where I stated that I had received no signals a few days earlier - the 
    > date of the radio observation was actually 06 November 2008, so I would 
    > dearly like to know who the "several amateur astronomers had
    > reported that DSP 23 had stopped transmitting in mid-September" are so 
    > that I can make contact with
    > them so that the amateur radio network that tracks classified satellites 
    > can be expanded.  As far as I
    > know I am the only amateur observer that has optical
    > AND radio capability for tracking geostationary objects.
    > DSP F23 cannot be seen or heard from CONUS so any observations would have 
    > had to come from further east - ie Africa, Europe, UK etc and it cannot be 
    > seen or heard from Australasia etc. To the best of my knowledge there are 
    > only TWO amateur optical observers in this region - Peter Wakelin in the 
    > UK and myself in South Africa that observe geostationary objects and Peter 
    > does not have the radio equipment for the frequencies required. All the 
    > amateur observations of this object were made by Peter and myself, and as 
    > pointed out in my previous posting the orbital elements for this satellite 
    > showed that it started drifting in mid-September 2008.
    > If I am incorrect in any of what I have written above
    > I would WELCOME correction as I TRULY would like to make CONTACT with the 
    > "several" and "some" amateurs that had reported no signals from DSP F23.
    > Now back to measuring last nights observations :-))
    > Cheers
    > Greg
    > -------------------------------------------------------------------------
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