HDTenEightyP/NetNews huggingface dataset:
From: seymour@ast.saic.com (Ken Seymour)
Subject: Re: Questions about P/Swift-Tuttle
Organization: SAIC
Date: Fri, 6 Nov 1992 23:08:50 GMT

In article <1992Nov5.081635.1201@horizon.com> schriber@horizon.com (Mike Schriber) writes:
>First of all, in response to a previous post, I belive the /P in 
>P/Swift-Tuttle designates it as a member of Perseid group (I may be
>very wrong on this though, since the Perseids are a metor shower).

Actually the P/ means periodic.

>
>My questions...
>
>Where is Swift-Tuttle visible?  What section of the sky (Coords. or
>what constelation it's in) and about what time of night is it above the
>horizon?
>

It is visible in the constellation Hercules.  I
observed it north of the "keystone" asterism last sunday night.  With
11x80 binoculars it seemed somewhat brighter than M13 (not far away).
The comet is heading east and south.
>

>				Thanks for any and all info
>
>				Mike Schriber
-- 
Ken Seymour
seymour@ast.saic.com
Newsgroups: sci.astro,sci.space
From: nousek@astro.psu.edu (John A. Nousek)
Subject: Re: Japanese X-ray satellite: Astro_D
Organization: Department of Astronomy and Astrophysics, Penn State University
	<BxL4vr.EIw@constellation.ecn.uoknor.edu>
Date: Thu, 12 Nov 1992 07:19:54 GMT

Astro-D will be an outstanding spectroscopic observatory, but
it is not the first X-ray spectroscopy experiment.  The Focal
Plane Crystal Spectrometer on Einstein had higher spectral
resolving power, but due to the low efficiency of Bragg scattering
off the crystals had low quantum efficiency.  Other spectroscopic
instruments included the Objective Gratings on Einstein and EXOSAT,
the SSS (a Si(Li) detector on Einstein) and the BBXRT on the Astro-1
mission.

But for the combination of moderate spatial resolution and large
effective area the Astro-D instrument will be able to take ground
breaking spectra of nearly every source that it looks at (and
won't be matched until the launches of AXAF-I and XMM around 1998-2000).

John Nousek

Newsgroups: sci.astro
From: lattis@sal.wisc.edu (Jim Lattis)
Subject: the import of Galileo's discoveries
Organization: Space Astronomy Lab, Madison WI
Date: Sat, 7 Nov 1992 03:20:02 GMT

as a newsgroup devoted to astronomical insight, i think
we should all understand what Galileo's observations
proved, as well as what Galileo said they proved, for
his claims may seem surprisingly modest to modern observers
of history.  G. build a very clever rhetorical case (see
both his Sidereus Nuncius and his Dialogue on the Two Great
World Systems) that suggested very strongly that his
observations supported the Copernican system.  but he never
claimed that his telescopic observations proved the Copernican
system in the crucial sense of proving that the earth is a
planet undergoing simultaneous rotational and orbital motion.
the only "proof" he ever offered was the idea (recognized by
even some of his contemporaries as highly suspect) that the
tides of the ocean are a "sloshing" of the water in the ocean
basins as a result of the earth's multiple motions.

what did his observations prove?  1. his observations of the phases
of Venus proved, to almost everyone's satisfaction, that Venus orbits
the sun, not the earth.  This contradicts the Ptolemaic theory of
Venus's motion, but does not contradict the Tychonic planetary
theory (which the sly Galileo never mentioned) nor does it contradict
the stability and centrality of the earth.  2. his discover of the
moons of jupiter proved that bodies other than the earth could be
centers of orbital motion, again contradicting Ptolemy, but proving
nothing about the state of motion of the earth.  3. his discovery
of the high relief in the lunar landscape proved, to most people's
satisfaction, that the moon was not a perfect sphere.  this contradicts
many Aristotelian principles and cuts some philosophical support
from beneath Ptolemaic theories, but proves nothing about the state
of the earth's motion.  4. his discovery that the milky way could be
resolved into stars suggested that the stellar universe had depth and
was thus less plausibly a sphere that could rotate daily about the
earth, but it proved nothing about the state of the earth's motion.

i would urge anyone interested in astronomy to read Galileo's little
Sidereus Nuncius, which is available in an excellent modern english translation
by Albert Van Helden (and it's in paperback).  it's short, interesting,
a true prose classic, and it's the true root of the modern discipline
of astronomy.  see for yourself what he claims to prove, but don't
let him fool you!

incidentally, Bradley's discovery of the aberration of starlight
around 1727 was the first physical proof of the earth's orbital
motion.  Foucault's pendulum first physically proved the earth's
rotation (early 19c i think) and the classic test, the detection
of stellar parallax, didn't come along until the mid-19c.
it is, for me, one of the most fascinating things about the
history of astronomy that by the end of the 1600s the Copernican
motion of the earth was widely accepted--in the complete absence
of any physical proof.
Newsgroups: sci.astro
Subject: Amateur Radio Astronomy
From: Andrew T. Chambers <atc@waikato.ac.nz>
Date: 11 Nov 92 11:11:59 +1300
Distribution: world
Organization: University of Waikato
X-UserAgent: Nuntius v1.1.1d9X-XXMessage-ID: <A7268CEEB1017A08@judie.ijk.waikato.ac.nz>X-XXDate: Wed, 11 Nov 92 16:11:58 GMTLines: 13

I am interested in setting up a small radio telescope...
Most of the books I've seen, are rather old and outdated.
Written in the days when cheap scanners and recievers for 800-1300 Mhz
didn't exist.
So a lot deal with modifying or building what is now rather outdated
insensitive equipment.
I would like to use one of the new scanners that can operate upto 1300
Mhz with a simple antenna setup, the whole thing connected to a computer
to analyze the data.
Is there anyone out there who has set up a small radio telescope, based
around a scanner?

Is there any information available on the net about radio astronomy?
Xref: sparky sci.astro:11660 sci.space:15358
From: bill@bessel.as.utexas.edu (William H. Jefferys)
Newsgroups: sci.astro,sci.space
Subject: Re: Hubble's mirror
Date: 5 Nov 92 15:55:21 GMT
Followup-To: sci.astro
Distribution: usa
Organization: McDonald Observatory, University of Texas @ Austin

In article <1992Nov3.213906.886@mrdog.msl.com> dhl@mrdog.msl.com (Donald H. Locker) writes:
#Now that I know a little about mirror-making, I'd like to hear again
#how the Hubble mirror contractor messed up the figure of the main
#mirror.  I understand it has spherical aberration, but wonder how
#[Rockwell?] managed to do that.

The Hartford Courant had a Pulitzer Prize winning
series of reports that go into gory detail on this.
They may still have copies available. It's entitled
"Hubble error: Time, money and millionths of an inch."
Write the Hartford Courant, 285 Broad St., Hartford
CT, or call Corporate Affairs Manager Sylvia Levy
at (203) 241-6431.

Bill
Newsgroups: sci.astro
From: hathaway@stsci.edu
Subject: Re: NEWS: Galileo Cleared of Heresy Charges by Vatican
Organization: Space Telescope Science Institute
Distribution: na
Date: Fri, 6 Nov 1992 16:36:50 GMT

In article <1992Nov5.230416.8291@samba.oit.unc.edu>, Bruce.Scott@launchpad.unc.edu (Bruce Scott) writes:
> lattis@sal.wisc.edu (Jim Lattis) writes:
> 
>>it may be clear today that Galileo was right, but the theologians of his
>> [...]
> 
>>...to put it another way, it's not a question of science that the panel
>>has decided, but one of history. [...]
> 
> This is entirely correct. I would add to it that the political milieu
> in which these people operated was of decisive influence. Galileo was
> known by the Vatican to have exchanged letters with Kepler, whose
> mother had in the meantime been burned for alleged witchcraft (remember
  ^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^ ^^^^ ^^^^^^ ^^^ ^^^^^^^ ^^^^^^^^^^ 
??? Was his mother really toast?  The book I recall mentioned that Kepler 
had to make an emergency trip home to prevent such from happening.  I'd 
thought he saved her.  If the book referenced below has it otherwise 
I'll try to find it.  I'm troubled by this human sacrifice aspect of 
religion. 

> this was during the Thirty Years War, which ended in 1648 with one
> third of German population dead; they were playing for keeps). Just
> 30 years earlier, Bruno and Campanella had used questions of cosmo-
[...]
                    ^^^^^ - I knew _he_ was crispy critter'd. 
> 
> The definitive reference for this story is
> 
>     The Crime of Galileo, by G Santillana (mid-late 1950's),
> 
> who drew the obvious parallels to the case of Oppenheimer.
> 
> Gruss,
> Dr Bruce Scott                             The deadliest bullshit is
> Max-Planck-Institut fuer Plasmaphysik       odorless and transparent
> bds at spl6n1.aug.ipp-garching.mpg.de                 -- W Gibson
> 
> 
> 
> --
>    The opinions expressed are not necessarily those of the University of
>      North Carolina at Chapel Hill, the Campus Office for Information
>         Technology, or the Experimental Bulletin Board Service.
>            internet:  laUNChpad.unc.edu or 152.2.22.80

Thanks - WHH 
Newsgroups: sci.astro
From: gmcquary@Ingres.COM (George F. McQuary)
Subject: Re: Lunar astronaut covers earth with thumb
Keywords: Jim Lovell
Reply-To: gmcquary@Ingres.COM (George F. McQuary)
Organization: Ask Computer Systems Inc., Ingres Division, Alameda CA 94501
Date: 13 Nov 92 19:44:45 GMT

>[Can so. Can not. Can so. Can not...]

Sheesh. Apparently most people are not even aware that you can cover the full
moon with a dime held at arms length (this is smaller than your thumb).
I suggest an experiment of direct observation with some pocket change to prove
this to yourself tonight if you are unbelieving. No, gloves are optional.

There are psychological reasons why the moon SEEMS to be larger than a dime
--it's a bright object against a dark background, when seen near the horizon
it's near similar sized distant objects known to be large, etc. Even
Aristotle wrote about this common optical illusion and why the
moon seems larger than it's true size, so people have been amazed by this
illusion for some time. It also makes a good bar bet.

Once you have observed for yourself the dime covering the moon experiment,
the original statement becomes much more plausable.

--
George F. McQuary 
"He is mad, bad and dangerous to know." -Lady Caroline Lamb
From: j.jahn@abbs.hanse.de (Jost Jahn)
Newsgroups: sci.astro
Subject: Sunspots at 10.11.1992.
Reply-To: j.jahn@abbs.hanse.de
Date: 10 Nov 92 20:03:00 MET
Distribution: sci
Organization: ABBS AstroMail, D-W 2121 Dahlenburg / Germany
X-Version: ZerUU V6.45c

Sunspots at 10.11.1992., 0 h UT.

No.    Pos.  Cl.  Ar.  Mag. SF  F  M  X
---------------------------------------
7330 08S 36W Dko  450   bg   5
7332 24S 92W Hax   60   a
7333 09N 26W Axx    0   a
7334 12N 19E Dao  210   b    2
7335 18S 22E Dko  430   bd   2
7336 07N 45W Cro   20   b    1


No optical or x-ray flares yesterday observed.


 
--
------------------------------------------------------------------------------
ABBS AstroMail, the first and most popular German astronomical bulletin board
------------------------- for amateur astronomers ----------------------------
    + 49 5851 7896 / V.21, V.22, V.22bis, V.32, V.42, V.42bis and MNP5
    ------------------------------------------------------------------
Newsgroups: sci.astro
Subject: Re: Lunar astronaut covers earth with thumb
From: rivero@mdcbbs.com (Michael Rivero)
Date: 11 Nov 92 10:50:59 PDT
Distribution: world
Organization: M&E (Division of EDS), Cypress CA

In article <30473@scicom.AlphaCDC.COM>, wats@scicom.AlphaCDC.COM (Bruce Watson) writes:
|> On the last installment of "Space Age" Jim Lovell said while he
|> was in the vicinity of the moon, he could cover the earth with his
|> thumb while his arm was outstretched. (It was also attributed to
|> Rusty Schweikart).
|> 
|> I heard this a few years ago on a radio talk show with one of 
|> the lunar astronauts as guest--was it Jim Lovell? 
|> 
|> A caller, who had a German accent, had trouble with this reasoned:
|> 
|> (1) This distance to the moon from the earth is the same as the
|>     as the distance to the earth from the moon,  
|> 
|> (2) The earth is larger than the moon, and
|> 
|> (3) We ordinary mortals here on earth can't cover the moon with 
|>     a thumb with arm outstretched.
|> 
|> His unstated conclusion was that the astronaut could not have done
|> it and you could sense his reluctance to call the astronaut a liar.
|> 

  They didn't use a naked thumb on the moon. With several layers of spacesuit
over it, the ol' thumb does cover the Earth.







<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
|  Michael Rivero rivero@mdcbbs.com  "Middle-aged Mutant Ninja Animator" |
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|     This is my last week at EDS (mdcbbs.com) and since I am planning   |
|    to run the animation shop as a full-time business (unless a higher  |
|    paying job comes along) I will be off the net for the near future.  |
|    I want to thank all the posters, my net-friends, and even my        |
|    net-enemies for having made this last year a most interesting and   |
|    colorful time!                                                      |
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
From: oler@rho.uleth.ca (Cary Oler)
Subject: Daily Solar Geophysical Data Broadcast for 05 November
Organization: University of Lethbridge
Date:  6 Nov 92 09:55:09 GMT

!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 310, 11/05/92
10.7 FLUX=133.6  90-AVG=124        SSN=121      BKI=3234 3221  BAI=012
BGND-XRAY=B5.0     FLU1=5.4E+06  FLU10=1.0E+06  PKI=3234 3321  PAI=013
  BOU-DEV=031,015,030,042,021,016,015,004   DEV-AVG=021 NT     SWF=01:005
 XRAY-MAX= M2.0   @ 0622UT    XRAY-MIN= B3.8   @ 2223UT   XRAY-AVG= C1.1
NEUTN-MAX= +000%  @ 2235UT   NEUTN-MIN= -005%  @ 0640UT  NEUTN-AVG= -1.5%
  PCA-MAX= +0.5DB @ 1750UT     PCA-MIN= -0.1DB @ 2010UT    PCA-AVG= +0.1DB
BOUTF-MAX=55440NT @ 0231UT   BOUTF-MIN=55408NT @ 1812UT  BOUTF-AVG=55420NT
GOES7-MAX=P:+104NT@ 1828UT   GOES7-MIN=N:-003NT@ 1126UT  G7-AVG=+071,+041,+010
GOES6-MAX=P:+118NT@ 1829UT   GOES6-MIN=E:-032NT@ 0631UT  G6-AVG=+087,-009,+037
 FLUXFCST=STD:130,130,125;SESC:130,130,125 BAI/PAI-FCST=010,015,015/015,015,015
    KFCST=2334 3233 2345 5433  27DAY-AP=021,009   27DAY-KP=2225 5443 1133 3223
 WARNINGS=*SWF;*PROTON
   ALERTS=**MINFLR:M2.0@0622;**PROTN10
!!END-DATA!!
Newsgroups: sci.astro
From: adams@engin.umich.edu (Christopher David Adams)
Subject: Telescope Making
Date: Wed, 11 Nov 92 19:38:57 EST
Organization: University of Michigan Engineering, Ann Arbor

I would like to build my first telescope and need some advice
or suggestions.  I'm primarily interested in deep sky astrophotography.
I'm thinking of building a 12" f4 Newtonian reflector and grinding my
own mirror.  Any hints, cautionary statements, source info, etc. would be
greatly appreciated.

Thanks in advance,

Chris Adams


Newsgroups: sci.astro,sci.space
From: beaucham@astro.phy.ulaval.ca (Dominique Beauchamp)
Subject: Re: what about toutatis?
Followup-To: beaucham@phy.ulaval.ca
Keywords: asteroid, 12/8/92
Organization: Universite Laval, Ste-Foy, Qc, Canada
Distribution: sci.astro
Date: Tue, 10 Nov 1992 13:16:32 GMT

In article <1992Nov4.175705.2775@cbnewsc.cb.att.com> rjp1@cbnewsc.cb.att.com (be here now) writes:
>
>What's the latest on asteroid 4179 Toutatis?  Where should I look
>for it during it's close encounter on Dec 8th, 1992?
>
>
>--
>Bob Pietkivitch     | "Moon, my long lost friend, is smiling from above."
>rjp1@ihspa.att.com  |  -- Genesis, Stagnation 1970
>

Hi Bob, I refer you to Sky & Telescope, December issue.  There is a long article on
Toutatis with many finding charts.  I think it will cross Sextans, Cancer and Leo.

Dominique Beauchamp

Newsgroups: sci.astro
From: bbbehr@sunspot.noao.edu (Bradford B. Behr)
Subject: Re: Lunar astronaut covers earth with thumb
Summary: rules of thumb? :)
Organization: National Solar Observatory/SP, Sunspot NM, USA
Date: Wed, 11 Nov 92 15:27:54 GMT

In article <30473@scicom.AlphaCDC.COM> wats@scicom.AlphaCDC.COM,
 Bruce Watson  writes:
>On the last installment of "Space Age" Jim Lovell said while he
>was in the vicinity of the moon, he could cover the earth with his
>thumb while his arm was outstretched. (It was also attributed to
>Rusty Schweikart).
>
>A caller, who had a German accent, had trouble with this reasoned:
>(1),(2) deleted...
>(3) We ordinary mortals here on earth can't cover the moon with 
>    a thumb with arm outstretched.
>His unstated conclusion was that the astronaut could not have done
>it and you could sense his reluctance to call the astronaut a liar.
> [Bruce experimentally disproves assumption #3 above, resolving
>  the dilemma.]

Also bear in mind that if one is on the moon, one is likely wearing a
spacesuit, including big, thick, well-insulated gloves, which will
make your ETD (Effective Thumb Diameter -- that's a highly technical
NASA term, so write it down) rather larger. Probably not by a factor
of 4 (R_earth/R_luna), but coupled with Bruce's observation, more than
enough to blot out the Earth.

Brad

-- 
----------------------------------------------------------------------
  Bradford B. Behr                   bbbehr@sunspot.sunspot.noao.edu
     Sacramento Peak National Solar Observatory, Sunspot NM 88349
----------------------------------------------------------------------
Newsgroups: sci.astro
From: dal3@cbnewsg.cb.att.com (dale.e.parson)
Subject: recommendation for books on amateur astro. with BINOCULARS
Keywords: binoculars books
Organization: AT&T
Date: Tue, 10 Nov 1992 18:33:06 GMT

Any good recommendations for books for the amateur astronomer using
bincoculars only? I know Sky Publ. carries several but I don't have
copies to peruse, would appreciate reviews of these or others.
I DO a lot of binocular observing along with my C8 observing, but
a friend with binocs. needs a book recommendation. Thanks.


Dale Parson, Bell Labs, dale@mhcnet.att.com

 ---------------------------------------------------------------------- 
|    "These words are too solid, they don't move fast enough           |
|     to catch the blur in the brain that flies by, and is gone..."    |
 ----------------------------------------------------------------------
|     Suzanne Vega                                                     |
 ----------------------------------------------------------------------

Newsgroups: sci.astro
From: fischer@physun.physics.mcmaster.ca (Phil Fischer)
Subject: Re: Know an adjective for black holes?
Keywords: black hole
Organization: Dept. of Physics & Astronomy, McMaster University
Distribution: sci.astro
Date: Fri, 13 Nov 1992 16:21:36 GMT

In article <12NOV199210275214@nssdca.gsfc.nasa.gov> batchelor@nssdca.gsfc.nasa.gov (Dave Batchelor, Space Phys. Data Facil. 301/286-2988) writes:
>
>We can always make one up.  For example, in geology, a spherical cavity in a
>rock is known as a vesicle.  The word 'vesicle' has French origins, so we
>could prefix it with a French word part meaning black, convert it to an
>adjective, and voila!
>
>Negrivesicular: adj. pertaining to a black hole
>------------------------------------------------------------------------------
>Dr. Dave Batchelor   Space Science Data Operations Office   Mail Code 632
>NASA Goddard Space Flight Center  Greenbelt  MD  20771  USA
>batchelor@nssdca.gsfc.nasa.gov


Except that the French word fro black is noire.
-- 
Phil Fischer                         | Hamilton, Ont.
fischer@crocus.physics.mcmaster.ca   | Canada
Dept. of Physics and Astronomy       | L8S 4M1
McMaster University                  | 416-525-9140 X 4574
From: bon@lte.e-technik.uni-erlangen.de (Uwe Bonnes)
Newsgroups: sci.astro
Subject: Correction Re: Finderchart Swift/Tuttle for Nov 12-26 (long)
Date: 11 Nov 1992 18:30:44 GMT
Organization: LTE, University of Erlangen, Germany
Distribution: world
NNTP-Posting-Host: aladin.e-technik.uni-erlangen.de
Keywords: Finderchart, Starchart, Swift/Tuttle


Sorry, the outputfile of uudecode will be named swift.uu instead of swift.ps.Z.
Please rename!

Uwe Bonnes bon&lte.e-technik.uni-erlangen.de
From: dif@xilinx.com (Diana Foss)
Newsgroups: sci.astro
Subject: Re: NEWS: Galileo Cleared of Heresy Charges by Vatican
Date: 3 Nov 92 16:43:02 GMT
Organization: Xilinx Inc.


>Let me get this straight.
> 
>Does this mean the Pope has declared that popes are not infallible?
 


Common misconception. The Catholic Church only considers Popes to be 
infallible when speaking ex cathedra on matters of doctrine. There
have only been a few times when popes have found this necessary, almost
all of them occasions having to do with the Virgin Mary. I think the
last time was back in the (nineteen-) sixties, when the bodily assumption
of Mary into Heaven was accepted as doctrine.

				Diana "and I'm an atheist!" Foss

					dif@xilinx.com
-- 
Any opinions here expressed are mine, not my employer's. No, really!
Newsgroups: sci.astro,sci.space
From: carroll@cs.uiuc.edu (Alan M. Carroll)
Subject: Re: ANSWER: Recognizing a Dyson sphere if you saw one
Organization: Technophiles Inc. - Engineers with Attitude
Date: Sun, 8 Nov 1992 21:02:29 GMT

In article <1992Nov6.083129.784@infodev.cam.ac.uk>, sl25@cus.cam.ac.uk (Steve Linton) writes:
> I thought the whole point of a Dyson sphere was to utilise the whle energy of the
> star, reradiating it as waste heat at some low temperature. I suppose the DS
> might not be finished yet, but it strikes me as the sort of thing you build
> completely or not at all.

A physically realizable Dyson Sphere would probably be built
piecemeal. If you're constructing it out of small, independent bodies
(such as large numbers of O'Neill colonies) then it makes perfect
sense to build it one orbiting body at a time, as you need living
space / energy. Each thing you put in orbit requires manufacturing and
maintenance, so there's incentive for doing as few as possible.

> A civilization that is using a substantial proportion of its star's energy would
> look like what you describe, but might simply have a large constellation of
> orbitting power stations.
> I guess it all comes down to definitions.

Yes, and Dyson's original article described the type of Dyson sphere I
have mentioned here, not a solid shell at all. So, pedantically, a
constellation of orbiting powersats is a Dyson Sphere.

-- 
Alan M. Carroll          "Weren't there yams involved, too?" - J. Ockerbloom
Epoch Development Team   
Urbana Il.               "I hate shopping with the reality-impaired" - Susan
Xref: sparky sci.astro:11874 sci.space:15731
Organization: Johannes Kepler University Linz - Computing Center
Date: Tuesday, 10 Nov 1992 10:46:23 CET
From: <K3032E0@ALIJKU11.BITNET>
Newsgroups: sci.astro,sci.space
Subject: Sikhote-Aline-Meteorite (was Re: "Earth Gains a Retinue of Mini-Ast.")
Distribution: na
 <1992Oct31.075547.28204@organpipe.uug.arizona.edu> <BxACCF.D3A@techbook.com>
 <1992Nov7.011656.14470@organpipe.uug.arizona.edu>

I suppose Sikhote-Aline was the largest space-rock ever OBSERVED to come down
Although it had probably around 200t before it entered the atmosphere, "only"
23t were collected. (By the way, 47 grams finally landed in my home...)
Sure enough, thousands of small pieces (less than a few grams) and probably
some large masses were not found in the dense forest, bringing the total
weight well up to 50t.
But Sikhote-Aline is NOT a Stony-Iron-Meteorite: It's a iron-meteorite
(coarsest Octahedrite, chemical group IIB).

Keep looking up|
  Herbert
From: gawne@stsci.edu
Newsgroups: sci.astro
Subject: Re: Experiences with telescope mail order
Date: 5 Nov 92 20:48:57 GMT
Distribution: na
Organization: Space Telescope Science Institute

I have bought several times from Astronomics of Norman Oklahoma.
I've never had any problems with them and the quality of their
information and help has been uniformly excellent.

I would enthusiastically recommend them to anybody.

-Bill Gawne
From: stevep@hpopd.pwd.hp.com (Steve Pearce)
Date: Thu, 5 Nov 1992 11:04:35 GMT
Subject: Re: Experiences with telescope mail order
Organization: Hewlett-Packard SSG/CCSY-PWD, UK.