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Reports from Geisei Observatory <July 27, 2005>

Observation of Nova Sco 2005 and photograph of the Milky Way

Nova Sco 2005:
July 26.45, magnitude 9.2, Bronica EC, 75mm f/2.8
July 27,45, magnitude 8.1, Epsilon 21cm f/3, TM400 film
    It was completely clear tonight. I photographed the area around Cygnus near the zenith. I searched the mid-altitude sky in the east from 22.00 to 23.00. I often use a relatively large comet seeker for late-night search, as the search area is quite far from the sun. However, the 9cm comet seeker takes over for pre-dawn search.

    The stars seen in the field of view of large binoculars are small and sharp, probably because of relatively small aberrations. The pair of binoculars I use was apparently designed with astronomical use in mind and there is only slight degradation of the image caused by coma at the edge of the field. The brightness of the image is superb. The coating of the lenses must be excellent. M31 entered the field soon after I began searching and a small neighboring galaxy at about 9.5 magnitude appeared surprisingly large. M32 was small and good-looking. Then, a little uneasiness crossed my mind: If a comet-like object such as these galaxies entered the field, could I tell if it was a comet and determine its position as quickly as I used to? More than 30 years have passed since my last discovery. Naturally, I have lost all the intuition I had.

    In comet search it is extremely difficult to determine the object's right ascension and declination. I saw a box lying at my feet and wondered what it would be. I recognized it was digital setting circles designed just for that purpose. It is ironical that a handy device like this is almost useless for old-fashioned observers like me. I will use the old elementary but proven method of sighting the object as if aiming a gun. There are countless sheets of drawing paper with a 5cm-diameter circle drawn on them. I haven't used even one sheet. This method of comet search hasn't improved since Messier's time.

M7 and Nova Sco 2005
10-minute exposure from 20:50 on July 27,2005, J.S.T.
ε210 (21cm f/3 reflector) TM400 film

The nova and surrounding area enlarged
Nova Sco 2005 is the bright star that the arrow points to.

The Milky Way around Cygnus
15-minute exposure from 21:30 on July 26, 2005 J.S.T.
Nikkor 75mm f/2.8 lens
TM400 film
Copyright (C) 2005 Tsutomu Seki.