Just a sample of the Echomail archive
[ << oldest | < older | list | newer > | newest >> ]
|  Message 243  |
|  Bill D to ALL  |
|  SUBJECT: WGA CIRCLES THREAD EXPANDS TO C  |
|  30 Nov 25 07:47:10  |
 
TZUTC: -0500
MSGID: 348.fidonet_ufo@1:3634/60 2d91742a
PID: Synchronet 3.19b-Win32 master/a2a9dc027 Jan 2 2022 MSC 1928
TID: SBBSecho 3.14-Win32 master/a2a9dc027 Jan 2 2022 MSC 1928
BBSID: RICKSBBS
CHRS: UTF-8 4
SUBJECT: WGA CIRCLES THREAD EXPANDS TO COMPUSERVE FILE: UFO1208
PART 2
#: 182317 S10/Paranormal Issues
22-Oct-91 05:28:22
Sb: CIRCLE.TXT
Fm: Robert Sabaroff 71251,2445
To: All
The CompuServe thread which followed the Sept. 22 upload of
CIRCLE.TXT to ISSUES/PARANORMAL Lib. 10, can be found in
SPACE or ASTRONOMY Libs. 17 under the title CIRCIS.TXT.
Most of the thread took off over there, and anybody who
wants to pick it up will find it current as of Oct. 19. It
is text-with-line-breaks, right margin adjusted for ease of
use of file viewing utilities, and loading by
wordprocessors.
Bob
#: [PRIVATE] S7/Extraterrestrials?
23-Oct-91 --------
Sb: CIRCLES.txt
Fm: -------------------------
To: Robert Sabaroff 71251,2445
I think Hubble's orbit is only about 380 miles or so, way
below geosynchronous
orbit.
------------------
#: ------ S0/Outbox File
23-Oct-91 19:58:00
Sb: CIRCLES.txt
Fm: SPACEFOR REP -----
To: [PRIVATE]----------------
Thanks for responding, ----. I can't tell from the header
if your reference to the Hubble orbit includes reference
from CIRCIS.TXT, the CIS thread that followed CIRCLE.TXT.
(Lib. 17, ASTRO or SPACE.)
It was offered here that the orbit was 600 Km., 97 minute
period. Your figured may be more correct. The group of
interested writers who got involved in the thread uploaded
in CIRCLE.TXT were given a tour at JPL, wheere we understood
that the original hope was for the 25,000 mile GEO orbit,
and to link the Hubble in space, before deployment, with a
second Shuttle payload containing a nuclear powerpack and
auxiliary thruster system. This would have made possible
retrievability from GEO orbit by means of controllable
decaying orbit. 670 Km was designated as the highest
possible parking orbit at which it could be recovered,
serviced and fueled in space, then redeployed on the same
mission. We were even showed a mockup of the "spectacles"
with which the mirror abberations were to be corrected.
If the 380 mi (440 Km?) is the present case, it could have
done to enable more energetic efforts to do debuggings from
here while we wait til '93, the scheduled repair mission.
When the thread (as in CIRCIS.TXT) moved to S3/Shuttle
Observation? (where the 670 Km altitude was offered us), and
further discussion held on that premise) there were also
offered some good reasons that the Hubble would not have
been meant to to operate at such low orbits.
/SPLIT
SP7
#: --------- S7/Extraterrestrials?
--------- --------
Sb: -------CIRCLES.txt
Fm: Robert Sabaroff 71251,2445
To: Robert Sabaroff 71251,2445
[Continued]
If the Hubble were meant to operate at even 600 mi., it
would be close enough to the highest penetration of the
ionosphere to make radio-telescopy unreliable at best. The
97 minute period would also require a much larger propulsion
and power reserve given the short exposure to a number of
essential guide stars. Likewise, target position fixing
becomes more precise at longer periods of orbit. One of the
early conjectural problems voiced in the original Hubble
proposals included the difficulty of obtaining enough
portion of the (then) 68,000 lb. Shuttle payload weight with
enough maneuvering system to give a long shelf life. When
the mission rules after Challenger were reduced to 48,000
lbs. this became a major problem.
You're correct in pointing out that a factual mistatement
exists about the Hubble actually being in GEO orbit. This
was followed up in CIRCIS.TXT, here on CIS, and we were
happy for it. We want to get the numbers right.
If you didn't see the messages involved, that scenarion that
suggested, and went from "no way" to "now that you mention
it, why not", and was noted out how easy it would be to
nudge a GEO satellite downward to initiate a slow,
controlled orbital decay.
Payload-linking and orbital redeployment were on the list of
Shuttle exercises before the Challenger disaster. I'll see
if I can find out exactly where Hubble is, at the moment.
Thanks for drawing my attention to your sense of it.
Bob
#: 92897 S3/Satellite Observing
25-Oct-91 07:37:41
Sb: #92707-CIRCLE.txt
Fm: Bert/Janet Stevens 73357,1572
To: Robert Sabaroff 71251,2445
Robert,
I am familiar with many of the things you mention.
However, I think my comments still stand.
In the lunar retrreflector project, the beamwidth at
lunar distance was not a couple yards as you seem to think
but a couple miles. (See Sky & Telescope, Feb. 1972, p. 88).
This particular beam included the focusing effects of a 60-
inch reflecting telescope. I find it hard to beleive they
hoisted a 1000-inch-plus telescope to geosynch orbit.
In addition, from geosynch orbit you could not aim the
beam with any accuracy. To be able to hit a target within a
200-foot circel, your aiming acuraccy would have to be
better than 0.2-second of arc (about 0.000046 degree). This
is impossible to achieve with ground-based telescopes, let
alone one that is wobbling around in geosync orbit. This is
why "spy" sattelites are in low Earth orbit rather than
geosynch orbits. They can get a much better look at the
surface.
Please note I am not (yet) arguing with the thesis, just
the geosynch delivery system. A satellite left in low Earth
orbit by the Shuttle make a lot more sense.
- Bert
#: 92911 S3/Satellite Observing
25-Oct-91 21:53:35
Sb: #92897-#CIRCLE.txt
Fm: Robert Sabaroff 71251,2445
To: Bert/Janet Stevens 73357,1572
Bert, I'm pleased that we've reached a point where what is
(yet) being discussed is not the main thesis, but the
specifics of the delivery platform itself. Re the lunar
reflectors - yes, there were finely modeled parabolic
reflectors at both ends of the experiments - which were
conducted in the '70's. The beamwidth at lunar distance *and
back*, a total of 476,000 miles, 19 times the 25,000 mile
distance a collimated beam would have to travel from a GEO
satellite, was a couple of miles.
So for the sake of discussion, let's adjust the distance a
bit, and add almost twenty years of R & D. some of which was
at the Hughes laser-dedicated research facility at Malibu,
about a half hour from my home near Santa Monica. My father
was a senior scientist at Hughes Aerospace in El Segundo,
first on the Surveyor Project, then Voyager. He never
breached security with me, but I had a sense of some of the
new stuff coming down the pipe. (He passed away in 1981.
He would have loved the crop formations),
If your hypothetical ground-based telescope had the benefit
of the newer, relatively high temperature superconducting
elecromagnetic collimation devices now routinely in use -
particularly in high energy maser emission - the problems of
focus, not to mention the relative mechanical stability of a
space-borne platform - become academic, because if I knew
how far such research had come, especially given the ambient
conditions of temperature in space, it would be at the
highest levels of classification and needto-know, as were so
many of the Shuttle flights, starting around the same time
the crop circles began to appear. Here we can only
brainstorm.
About stability, and spy satellite;
[More]
There is 1 Reply.
#: 92912 S3/Satellite Observing
25-Oct-91 21:53:50
Sb: #92911-#CIRCLE.txt
Fm: Robert Sabaroff 71251,2445
To: Robert Sabaroff 71251,2445 (X)
[Continued]
A gyro-stabilized GEO satellite, will indeed precess, or
wobble. As a pilot I know the need to constantly correct a
gyro compass against a magnetic one to compensate this. It
takes a lot less hardware and fuel expenditure to briefly
stabilize a GEO-satellite on a ground point than it would to
line up a spy satellite with a point on the earth, then
rotate the emission/detection device to "pan" below over a
point over which the satellite is traveling at high speed.
Further, the risk of malfunction in a non-stationary system
would be unacceptable. The GEO's are more stable than you
might think. Ships and aircraft get position fixing to the
second of arc from them.
If you also consider the operations of radio astronomy or
simply holding on a spot on a Uranian moon, using guide
stars over the distances involved in such missions,
satellites can and may already be able to use a laser'ed hot
spot on the earth as a psuedo guide star for relatively
short term super-accurate stabilization. There is another
interesting factor - the presence in the Wiltshire area
(Horstmanceaux castle), with a strange recent history, near
or at which is the Royal Greenwich Observatory facility for
doing (at least) two things. One is the refinement of
orbital device tracking - another is precise measurement of
the rotation of the earth.
Since CEO orbit is defined as one where orbital velocity
exactly matches the speed of the rotation of the earth
beneath it, this seems convenient. The only indication of
drift by the source, in the circles themselves, is that many
are very slightly elliptical.
There is another argument against non-GEO emitters...
[More]
There is 1 Reply.
#: 92913 S3/Satellite Observing
25-Oct-91 21:54:03
Sb: #92912-CIRCLE.txt
Fm: Robert Sabaroff 71251,2445
To: Robert Sabaroff 71251,2445 (X)
[Continued]
A non-stationary spy satellite have a couple of problems in
common. The telescope has to deal first with the thickest
part of the atmosphere, then the rest, and by the time a
resolved image is procured a lot of diffraction and
refraction has occured. Especially at oblique angles, since
off the vertical, the amount of atmosphere to penetrate
increases. Flying directly over an airport on a smoggy day,
it looks very clear. But when approaching at an angle for
landing, one enters the smog layer and is looking into it
edgewise, and visibility can drop from 50 miles to 1/4 mile
in an instant. That's why a lot of L.A. pilots have
instrument ratings.
A non stationary spy sattelite faces not only the same
difficulties (and, by the way, many of the pictures you see
are extracted from much larger ones. It isn't always in the
center of the pass), but even overhead the total path
through atmosphere is probably at least 20 or more % of its
altitude. From 25000 miles, given the extremely sharply
collimated and amplified emissions it figures are now
possible - relative atmospheric effects are far less.
Finally, given the quantity and frequency of the crop
events, I can't imagine a spy satellite's overflight not
being correlated to the on-site realities. A GEO, on the
other hand, can be damned hard to find if you don't know
where to look, or at least when and where it was deployed.
You won't learn either from the preflight manual of a secret
Shuttle mission.
And please note, I appreciate the "devil's advocacy." The
truth might be somewhere between us.
Bob
#: 92922 S3/Satellite Observing
26-Oct-91 07:20:08
Sb: #92913-CIRCLE.txt
Fm: Frank Hentschel 75126,72
To: Robert Sabaroff 71251,2445
Actually, the Global Positioning System (NavStar)
satellites are not in geosync orbits. The orbits are
approximately 20,000 km with a 718 minute period. Position
is derived from time delay measurements from 3 or more
satellites. The receivers periodically download an ephmeris
from the satellites to update orbital elements.
Also, as an author and user of satellite tracking
software, I can say that, from a computational viewpoint,
finding a geosync satellite is an order of magnitude easier
than a low earth orbiting one.
cheers -fjh
#: 92945 S3/Satellite Observing
26-Oct-91 21:35:19
Sb: #92922-CIRCLE.txt
Fm: Robert Sabaroff 71251,2445
To: Frank Hentschel 75126,72
Thanks for the information about the NavStar orbits, Frank.
I knew they used three for position fixing, but hadn't
realized they operated at that much velocity. The
downloading of an ephemeris to update orbital elements is
remarkable, no matter how jaded one gets. (All those hours
with a Weems plotter, fine print in red light, and a sextant
bubble that refused to fit the little bullseye pocket, loran
that could only doodle...)
When you refer to the relative ease of finding a low earth
orbiting satellite compared to a GEO, do you mean that with
radar alone, without seeds such as deployment data?
Would this also be true if the the time, place and altitude
at which the object deployed were unknown, (in the case of
the GEO) and it emitted no radio frequency energy in any
mode other than a very narrow beam to/from another
satellite? Can a GEO be (easily) found with radar alone?
I appreciate the specifics Frank, and the following isn't
meant to be evasive. Presuming, as my side of the thread
does, that the events under discussion are part of an
international co-venture, probably including the British,
and the classification level would be pretty high; is it
within the capability of equipment available to amateurs to
locate a non-emmitting GEO satellite from within a 100 mile
circle of its Clarke station? Especially if it were
designed to have very low optical (and other) reflectivity?
Your on-the-job expertise is very appreciated. My apologies
if any of the questions push the limits of prudence,
security-wise. But, some amateurs might want to take "a
look," if it's possible.
Bob
#: 92995 S3/Satellite Observing
27-Oct-91 20:37:44
Sb: #92913-CIRCLE.txt
Fm: Bert/Janet Stevens 73357,1572
To: Robert Sabaroff 71251,2445
Bob,
I feel like I'm slogging through mud on this one. I do
not work for the gov't, and have no idea what they are doing
in the "secret labs". Since most of your arguments come
back to "recent advances in secret research" only available
to those with a "need to know", how can I argue against
anything?
Perhaps they have put a secret automated base on the Moon.
Have you checked the circles to see if their correlation
matches the Moon being in the sky? How about Mars, Venus,
or Mercury? See my problem, you can always hypothesize a
pointing/trageting accuracy available in the secret labs
with some exotic beam-collimation technique to move back as
far as you want.
My comments about the laser beam are trying to say that
the spread is *NOT* due to the poor '60's technology, but
due to the natural laws of physics regarding light. Unless
some active role is taken en-route, the beam WILL spread no
matter how it is generated.
I cannot think of anyway to overcome the "secret lab"
problem. It reminds me of the UFO arguments I had in the
sixty's. When asked for proof that UFO (read extraterestial
visitors) exist, they would always say that there was a
secret government conspiricy to hide the data. The good
data was hidden (at Wright-Patterson AFB as I remember), or
was ridiculed and made to look phoney. Hence, you could
never argue with them since, according to them, the proof is
right there: just get the government to release it and we
will all be beleivers.
Unfortunately, I think I may have to put this one into
the "yes-maybe-but it doesn't matter until it's proved". My
favorite line was "UFO's may or may not exist, but I am not
going to worry about it until a large metal saucer lands in
Grant Park (downtown Chicago, IL) and Michael Renne walks
out followed by an 8-foot metal robot" (a la "The Day the
Earth Stood Still")
|
[ << oldest | < older | list | newer > | newest >> ]