We held a public viewing night today at Geisei Observatory
assisted by Mr. Oba, a staff member. About 25 people participated. Despite
very bright moonlight close to full moon, Venus and Saturn were beautiful
thanks to stable air.
At 19:25 a bright artificial satellite appeared in the northwestern
sky, passed overhead, and flew to the east-southeast. It was as bright
as Jupiter (-2 magnitude) and orange in color without flashing lights typical
of an airplane. There shouldn't be any passenger plane flying to that direction.
As I didn't hear any engine noise, I think it was a satellite flying close
to the atmosphere. Though I have been watching artificial flying objects
since about 1959, I have never seen anything this bright except for satellites
just about to plunge into the atmosphere.
I observed C/2007 E1 McNaught in the western sky after the
end of the viewing night. It had faded to about magnitude 15.
It is mid-April and in the middle of spring, but was unusually
cold all day today. The mountains of Otoyo town, where Kajigamori Observatory
is situated, were reported to be covered with snow, looking like a typical
On a day like this the stars in the sky looked magnificent
and the summer Milky Way appeared bearing down on us on the ground. The
gegenschein (counterglow) was even seen in the dark part of the sky around
After completing observations with the 60cm reflector, I
searched for a comet for one hour in the morning. I came across Comet Machholtz
1 during the sweeping, which was at magnitude 8.5 with the coma 2.5' across.
A faint tail appeared to be trailing.
I saw M31 in Andromeda for the first time in many days. The
galaxy looked very large because of excellent sky transparency. I followed
through a cumbersome set-up procedure of my "Navigator" (digital
setting circles) and with some confidence was able to search low altitude
skies in the morning twilight.
Summer Milky Way
30-minute exposure at 3am on April 19
ISO 400 film 24mm f/3.5
I returned home on the night of April 8 after the successful
two-day Comet Conference. It was a fruitful conference attended by people
all passionate about astronomy. In my lecture I gave at the conference
I stressed that there is still a chance of visual discovery by amateurs
if they continue to search diligently. I gave them two examples of successful
visual discoveries by amateurs, although amateurs may feel that searches
by professional astronomers of the LINEAR project a threat to their chance
These two examples are recently discovered Comet Levy (C/2006
T1) and Comet Machholtz (C/2004 Q2). I showed the audience the ephemerides
of the two comets over a period of about a year and half until its discovery
and explained how these comets had been captured by amateurs but missed
by professional astronomers due to particular positions of the comets in
relation to the sun. I also told them that the chance of visual discovery
had fallen to a third since the search by professional astronomers began.
However, visual discoveries have continued steadily without the pace of
discovery falling dramatically since the time when the LINEAR project started
about 10 years ago. Unlike professional astronomers amateurs are not pressed
to make achievements every year. It would not matter if they could find
only one or two comets in their lifetime. Many comet hunters began their
search inspired by a thought that a comet bearing their name might shine
in the sky some day. I emphasized that such a chance should visit them
in the future.
In the past some amateurs stopped searching for comets upon
the announcement of the LINEAR project believing the era for amateur discoveries
had come to an end. When they stopped searching, all the efforts they had
made would be wasted and whatever achievement they had made would be forgotten.
One's achievements will glow forever by continuing their search.
After my lecture I received the commemorative certificate
for the naming of Minor Planet Murikabushi from Mr. Hideo Fukushima, a
staff member of the National Astronomical Observatory of Japan. I felt
greatly honored. Murikabushi is the name of the telescope of Ishigakijima
Astronomical Observatory in Okinawa and I had proposed the naming to MPC.
During my stay at Niigata, I met many warm-hearted people.
The impression of these people merged with the image of beautiful snow-covered
Mt. Hakkaisan, which I was fondly remembering on the train on my return
A photograph of the Comet Conference participants
Mr. Shigeki Murakami, the organizer of the conference, in front of the conference sign, and Seki to his left.
The comet conference was held on April 7 and 8 at Hakkaisan
Seminar House in Niigata prefecture and concluded successfully. The conference
was significant in that it attracted researchers from the National Astronomical
Observatory of Japan and other research institutions, students as well
as amateur astronomers. I am confident that the conference made a great
contribution to the study of cometary astronomy. It should be noted that
Mr. Shigeki Murakami, the organizer of the conference, and local members
provided huge assistance. Together with support of enthusiastic participants
who worked behind the scenes, it was run smoothly and quite enjoyable.
Among the participants were comet discoverers of old times
as well as Mr. Akira Takao, who attended the second Comet Conference in
Kochi City and visited me at home. I saw some people for the first time
in 35 years. I was deeply moved by the occasion. Some participants had
started searching for comets decades ago and were still actively engaged.
I have a high regard for these people. I had commemorative photographs
taken together with many conference attendees and also autographed my old
books. Many of the research papers presented were in the field of physics
and there were also valuable talks by astronomers. Such talks are not often
available to amateurs and general public.
The sky was partially clear on the night of April 7 and we
were able to look through a 60cm reflector at the conference venue. It
was at an elevation of 500 meters with snow covered Mt. Hakkaisan towering
right to the north and the sky conditions were quite good.
Apart from research presentations, I found the conference
significant as a pleasant venue for meeting with people whom you would
The next conference will be organized by Mr. Kinoshita and
others and held in Hiroshima prefecture.
A paper presentation
There was the Comet Conference in Niigata prefecture and
I arrived in Niigata City on April 6, the day before the conference. The
reason for my earlier arrival was that I wanted to see the monument dedicated
to "Sunayama" (Sandhill), a famous poem written by Hakushu Kitahara,
Japan's foremost poet.
Mr. Kei Okamoto, our homeroom teacher, taught us the song
"Sunayama" when I was in 4th grade. In his music class he said,
"I will teach you the song I love most. I always sing this song when
I feel lonely" and sang it for us playing the piano.
"Over the churning seas lies Sadogashima Island.
Chirp, sparrows, it's becoming dark.
Call out to everybody, you can see a star."
It is simple and beautiful. Hakushu in his early days wrote
this poem after visiting a beach when he was invited to give a lecture
at a teacher's college in Niigata City.
Mr. Kei Okamoto was an expert on insects and in his science
class told us painstakingly about the excitement of searching in nature
for a new species. I believe I became interested in nature and then fond
of the stars thanks to Mr. Okamoto. Having Mr. Okamoto as a teacher was
pivotal in my early childhood. He excelled not only in science and music,
but also was quite athletic. He was the admiration of us students.
Our peaceful school life did not last long. We were in the
midst of the Sino-Japanese War (1937-1945) and on the even of the breakout
of the Pacific War. Mr. Okamoto was drafted and sent to China. Students
and others looked after Mr. Okamoto as he walked through the school gate
and disappeared. His figure with the back toward us is still deeply etched
in my memory more than half a century later. Mr. Okamoto encouraged me
and inspired me, although I was a failure as a student. Sadly, we have
never heard of him since.
I wanted to visit the sea which had inspired Hakushu into
writing "Sunayama", Mr. Okamoto's favorite song. Did Hakushu
see the sea under a clear sky or an overcast sky? There was no sign of
the sandhill there. Only raging waves were routinely striking against the
awkward-looking breakwater and the mountains on Sadogashima Island were
seen vaguely in the far distance through haze.
"Mr. Okamoto!" I shouted loudly and strongly in
my mind toward the sea. The nightfall was rapidly approaching and only
the sound of breaking waves was heard as if lasting forever.
Posing in front of the monument of "Sunayama"