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[vsnet-chat 2429] Nova Aql 1999 discovery story
- Date: Thu, 2 Dec 1999 18:19:41 +0900 (JST)
- To: vsnet-alert, vsnet-chat
- From: Taichi Kato <tkato>
- Subject: [vsnet-chat 2429] Nova Aql 1999 discovery story
- Sender: owner-vsnet-chat@kusastro.kyoto-u.ac.jp
Nova Aql 1999 discovery story
Alfredo Pereira <apereira@fc.ul.pt> has kindly sent the detailed discovery
story of Nova Aql 1999 No. 2. Congratulations!!
======================================================================
I hunt for novae visually with 9x34 and 14x100 binoculars, and I
still need to add the totals of my last few months, but the grand
total is close to 500 hours now. Nova hunting is in fact my main
astro-work, more than comets because I fear light pollution will
sooner or later deter my comet observing, as my NEL is now no
better than 6.0-6.3 on good nights, and is gradually getting worse.
Nova hunting takes a lot of time and effort. I spend about 1h 30m
each clear night regardless of the Moon. I scan Sgr (with 14x100's
to mag 8.5 or so) Sct, Aql. A bit of Oph, Her, Sge, Vul, Cyg, and
small parts of Cep, Lac, Cas, And, Aur, and Pup. All to mag.
7.5-9.0 depending on locations.
Memorizing the binocular constellations which one invents for the
purpose is very easy. Much more difficult is to keep assiduity.
In winter/early spring I have to get up at 4am. My whole hunting
area is currently about 2000 square degrees, with over 3000 stars
memorized. I tried in 1981 with Del and Lyr which were small but
soon gave up. I was young (now I'm 35) and very unpatient!
In 1987 I resumed attempts, but hunted very irregulary and my area
was still too small. In 1991 I started what I call serious
hunting, and since then have logged nearly 500 hours, which is
reasonable. In 1994 I did not make any astronomy at all. In the
past two years I managed ~100h/year.
I caught N Aql 99 #2 just a few minutes after I had started another
evening session. I had swept Sct, and rising the 14x100's I scanned
central Aquilae where I go deep to mag 8.5. I had the intention of
switching to 9x34's since these areas were higher in the sky, but
then I saw a bright object that completely disturbed even the main
"skeleton" of my binocular patterns. I waited a few seconds, and
it did not move, then I waited more... no movement! My heart
pounded! I layed the 14x100's on the sofa-chair I was using inside
to look through an open window (some parts of my hunting are made
from indoors); and I went to call Catarina. Then another look and
no movement. Of course I had seen the field hundreds of times, and
knew very well that nothing should be there. We checked GSC7 for
variables and asteroids, then we checked photos taken in 1992 that
act as a home-made photo atlas to check suspects. Nothing was there
of course, so we measured an approximate position and prepared a
report for CBAT. When I tried to loggin to campus, we found that
our mail was not going out repeatedly. Panic! We re-set the
computer, and tried a few more times. Then we decided to give CBAT
a phone call. We continued to observe the object until it set.
In was an anxious evening waiting for confirmation. I still managed
to do some more nova hunting, but I'm afraid I missed checking many
parts of my program this night.
Return to Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp