From William Patrick SHEEHAN
® . .
. . . . . Date: Tue, 27 Jan 2004 22:49:06 -0600
Subject: FW:
RE: RE: FLIGHT CENTRE Re: Flight go
Hello again,
This is Bill Sheehan's wife
sending an update on the current arrangements for Bill's travel to
Thanks for all your help,
Deborah Sheehan
® . .
. . . . .Date: Sun, 1 Feb 2004 12:50:24 -0600
Subject: RE:
FW: RE: RE: FLIGHT CENTRE Re: Flight go
Dear Masatsugu,
Thank you for much for the latest amendment
of the schedule. I was at Yerkes
Observatory last week doing research on the discovery of the spiral-arm
structure of the Milky Way (by W.W. Morgan in 1951) and Debb
forwarded your message to me.
Sky & Telescope have just
published an article by Tom Dobbins and myself about
the canals of Mars as imaged by CCD cameras.
Bill Hartmann sent a few comments about this, to which I responded. Here are my comments which may interest you
-- especially about the Weapon of Mass Destruction claim and the way that
dovetails with the early history of planetary astronomy.
While at Yerkes, I was able to venture one
day, by train, into
I shall be in touch again shortly.
Yours ever,
Dear
Bill (Hartmann),
Gary Seronik of Sky & Telescope passage
along to me your comments, "The Streaks of Mars," which of course I
agree with entirely.
I loved your Mars Traveler's Guide, and had
it with me last summer when I had more than two weeks' telescope time on the
36-inch refractor at Lick and drew the planet nightly. I posted a web page of these drawings and
those by other observers (the color renditions by Laurie Hatch, who is a
photographer up there, are absolutely exquisite; better even than Antoniadi's, and she had no training in planetary
observation -- only art). If interested,
you can access it by doing a Google search on "Two weeks on Mars
Lick"
I had to diaphragm the instrument to 20
inches to reduce the chromatic aberration.
Even at this resolution, with 400 or 500 power,
"canals," such as those around Solis Lacus, appeared like twisted
filaments and irregular streaks, but in smaller apertures -- or with lower
power -- canal-like impressions were very striking. What made the greatest impression on me was
that Mars was obviously a very windswept place.
The leitmotif of the planet's surface markings is triangular, streaky,
wisp-like, rather than circular as in the case of the basins and craters of the
Moon. I think that as you point out the
windblown and streaky surface of Mars, combined with the eye-brain-hand's notorious
tendency to regularize or emphasize linear trends, was
enough to account for the canals. The
idea that Schiaparelli and Lowell saw something completely illusory has always
seemed to me, as you know, to beg the question; even illusions must have explanations,
and as depictions of the reality of the Martian surface, Schiaparelli's and
Lowell's drawings capture the streaky schema of the features in a way that is
as justified as Antoniadi's smattering of detached
spots, which is not always based in the true forms of the surface.
The double canals have always been a puzzle,
but I now think that they can be explained, and your idea that the prevailing
winds produce multiple parallel streaks is the only possible explanation.
What this does is rehabilitate Schiaparelli
and Lowell as observers. Of course,
Thanks for your good note, Bill, and do let
me know when eventually you have time to paint me a picture of Mars being
viewed at a distance by an approaching spacecraft, where the windblown streaks
suggest Lowellian canals. I'd prize it especially given the connection
with this particular controversy.
All the best, yours,
Bill Sheehan
® . .
. . . . . Date: Mon, 9 Feb 2004 09:00:57 -0600
Subject: RE:
FW: RE: RE: FLIGHT CENTRE Re: Flight go
Dear Masatsugu,
Pardon me for some delay - I have been doing some research at Yerkes
Observatory on the discovery of the spiral-arm structure of the Galaxy, a
project with which I have been off and on for the past few years now.
I think all the plans for the
I am looking forward to seeing you soon and
when you have the itinerary finalized I shall be glad to start preparing my
talks on Lowell, Mars, and the transits of Venus. I shall also start applying
myself to learning some Japanese phrases and will certainly get a copy of a map
with English words on it as you advise.
Ever,
® . .
. . . . .Date: Mon, 9 Feb 2004 13:05:08 -0600
Subject: RE:
FW: RE: RE: FLIGHT CENTRE Re: Flight
Dear Masatsugu,
This trip will be one of the most memorable
of my lifetime, and I will put the final plans in place. I am so looking forward to seeing you, and I
have a few mementos to bestow upon you in gratitude for all you have done --
not least of which is a paper of Percival Lowell's signed by himself.
I am looking forward to our time together
and to meeting all the luminaries of
Yours,
® . .
. . . . .Date: Mon, 9 Feb 2004 13:31:40 -0600
Subject: RE:
FW: RE: RE: FLIGHT CENTRE Re: Flight
Dear Masatsugu,
I do not watch the television news at all in
the
I sent a message a while back to David
Strauss about our plans but have not heard of him. I greatly enjoyed his article on Lowell and
Mars, "Fireflies Flashing in Unison."
Yours,
® . .
. . . . .Date: Sun, 15 Feb 2004 15:54:35 -0600
Subject: RE:
FW: RE: RE: FLIGHT CENTRE Re: Flight go
Dear Masatsugu,
I have made all of the arrangements for the
trip to
I hope to start immersing myself in things
Japanese in the near future -- including obtaining a map of sites in English,
on which I will plot the itinerary you have so kindly and thoroughly planned --
I am also going to reread Lowell's *Noto* with special reference to any places where we will be
traveling. I plan to keep detailed notes
of the places that we visit and may prepare a kind of then and now publication
-- Noto as
it was in 1889, through the eyes of this American visitor, and as it is in 2004
through the eyes of this other one (myself).
I will look forward to presenting on Mars
and
My very best wishes, yours,
DATE:FEB 11 2004
ITINERARY OUR REF: WDMFXM
AGENT: TIMOTHY
SHEEHAN/WILLIAMMR
WEDNESDAY NORTHWST AIR FLIGHT NW 750 COACH CLASS
21 APR 04 DEPART: MPLS/ST PAUL 1118A NONSTOP
TERMINAL L
ARRIVE:
DETROIT/METRO 202P CONFIRMED
TERMINAL EM
AIRCRAFT TYPE: AIRBUS A320 JET
FLIGHT
DURATION: 1:44
WEDNESDAY NORTHWST AIR FLIGHT NW 69
COACH CLASS
21 APR 04 DEPART: DETROIT/METRO 330P NONSTOP
TERMINAL EM
22 APR ARRIVE: OSAKA/KANSAI 610P CONFIRMED
AIRCRAFT TYPE: BOEING 747 JET
FLIGHT
DURATION: 13:40
THURSDAY ALL
OPERATED BY-AIR
22 APR 04 DEPART: OSAKA/KANSAI 835P NONSTOP
ARRIVE:
TERMINAL D2
AIRCRAFT TYPE: BOEING 737-500
FLIGHT
DURATION: 1:10
--- SURFACE TRANSPORTATION ---
SUNDAY NORTHWST AIR FLIGHT NW 20
COACH CLASS
09 MAY 04 DEPART: TOKYO/NARITA 315P NONSTOP
TERMINAL 1
ARRIVE:
MPLS/ST PAUL 1205P CONFIRMED
TERMINAL L
AIRCRAFT TYPE: BOEING 747 JET
FLIGHT
DURATION: 10:50
® . .
. . . . .Date: Sat, 21 Feb 2004 17:02:34 -0600
Subject: mars
flares from CASLEO
Dear Masatsugu,
Everything is arranged, then, for my
visit. I am looking forward very
much. I am beginning to immerse myself
again in the
I am writing now to update you on some
interesting developments regarding Mars.
I have just heard from Michael Snowden, an American astronomer (now
expatriate) whom I met in
My kindest regards,
Bill
****
Dear
Bill,
Since
writing last, I have made some interesting progress on processing my CASLEO Mars
images. I am pleased to report that they are turning out better than I had
hoped. I have done only initial and simple processing so far, but they are
responding beautifully to unsharp masking techniques
in displaying far more details in the atmosphere than you can see in the raw
samples that I put on the web. My progress is slow, because I am having to learn each step at time in this processing
game. Quite different from stellar photometry.
Besides
the atmosphere, on processing some of my I band images,
which show the surface, I think I have captured some activity in the Edom Prominatorium (Schiaparelli crater) area. You are aware
that that area is the site of flashes which various people have reported. When
compared with my U images taken about the same time, it is clear that the
Not
long ago, I remember seeing a couple of articles in Sky & Telescope
about the flashes in the
I
hope you might still be interested in my sending you an article for Sky & Telescope, or might suggest an
alternate magazine. It could be that I've been too slow in reporting last
year's opposition, and an article would be too dated. As I gain experience in
processing the images, they are getting better and better, but they are not yet
ready for publication. I'll send you a sample before long.
Here
in
What
do you do for getting central meridians for Mars? I must calculate 10,000 for
my entire image collection. I found a perfect little BASIC programme
on page 296 in the 1990 September issue of Sky & Telescope by a
bloke called Roger Sinnott. It calculates one
meridian at a time, but can easily be adapted to do 10,000. Not so easy is
converting BASIC to FORTRAN, because I know nothing about BASIC. I have the
feeling that Sinnott has a FORTRAN version of the programme, but have no contact for him. Do you? It would
save me a lot of time if he does.
Yes,
you would be most welcome to visit us in
I'm
sure you are aware of the 2005 opposition. What are your plans for it?
Obviously,
Aren't
the rovers absolutely stunning? Such an exciting time.
Write when you can.
Cheers,
Michael (Snowden)
Bill SHEEHAN (