302545144.pdf

|  1. DATE - TIME GROUP | 2. LOCATION  |
| --- | --- |
|  October 65 | Northern Hemisphere  |
|  3. SOURCE | 10. CONCLUSION  |
|  Multiple | Comet (IKEYA-SEKI) ☑  |
|  4. NUMBER OF OBJECTS | See case file  |
|  One |   |
|  5. LENGTH OF OBSERVATION | 11. BRIEF SUMMARY AND ANALYSIS  |
|  N/A |   |
|  6. TYPE OF OBSERVATION |   |
|  Ground-Visual |   |
|  7. COURSE |   |
|  Stationary |   |
|  8. PHOTOS |   |
|  ☑ Yes ☐ No |   |
|  9. PHYSICAL EVIDENCE |   |
|  ☐ Yes ☑ No |   |

FORM
FTD SEP 63 0-329 (TDE) Previous editions of this form may be used.

Early-Morning Rising Necessary

# Newly-Sighted Comet Visible Here

The newly-discovered Deeya-Seki comet, named for two Japanese astronomers who first sighted it Sept. 18, has been sighted and photographed by a Wright-Patterson Air Force base aerospace engineer.

Harold Schuetz, of 1095 Boston court, Xenia, photographed the comet with a Polaroid camera mounted on a tripod on the roof of his home.

He said yesterday the comet is visible on the eastern horizon from about 5:15 a.m. to 5:15 a.m. each morning and should be visible through the end of this month.

Schuetz suggested city residents wo…

MEMO FOR THE RECORD

Mrs. [redacted] called 20 Oct 65 regarding the comet which supposedly can be seen at the present time. Sgt. Moody said that it is difficult to be seen because of the weather. It is also difficult to see without binoculars. Sgt. Moody suggested that she call again Friday about 10 o'clock.

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# Comet Ikeya-Seki

**DAVORABLE PLACED** observers on October 28-21 viewed a comet so brilliant that it could be seen with the naked eye in broad daylight, if the sun was hidden behind the side of a house or even an outstretched hand. This beautiful phenomenon is rare: the most recent daylight comers had been 1927 IX, 1910 I, 1901 I, and the great comers of 1882, 1843, and 1811.

Many more professional and amateur astronomers viewed Comet Ikeya-Seki in the dawn skies of late September and October as a frosty patch that brightened noticeably from day to day. And after peribellion passage …

The motion of Comet Beya-Seki within 67 minutes is evident in these daytime pictures taken October 21st in Japan, at Tokyo Observatory's Norikura solar station, 9,400 feet high. The sun is behind the 6".57-diameter black disk, which is here fringed by scattered sunlight (not the corona). North is up, east to the left. The tail lugged far behind the cometsun line, because the comet's velocity was much greater than that of outflow along the tail. F. Moriyama and six co-workers took these pictures at 2:20 UT (left) and 3:27 with a 4.7-inch f/12.5 coronagraph in 4700-6000-angstrom light. In sendin…

For this 41-minute exposure on October 6th, C. Capen and J. Young at Table Mountain Observatory used a telephone lens of 250-mm. focal length.

especially from the Northern Hemisphere. Even in the southern continents, morning twilight masked most of the tail, and on October 18th, just 80 hours before perih-

Mid-exposure was 11:32 Universal time on October 13th for Manuel Mendez' 16-minute plate, taken with the Carte du Ciel refractor of the Mexican National Astronomical Observatory. The comet, which was near Gamma Crateris, showed a tail 42 minutes long.

lion passage, Woomera astronomers cou…

With his unaided eye, David Meisel made these daylight sketches from Flagstaff, Arizona, as the great comet approached perihelion. The drawing at left was made October 20th at 21:00 UT, the other two hours later. He saw about 2½ degrees of tail and a coma two minutes of arc (or less) in diameter.

of Tokyo Observatory. See picture caption page 332.

Few observations have been reported during the following few hours; this is believed to be due to generally cloudy conditions. Clear skies in Prague, however, did allow astronomers there to pick up the comet with the unaided eye sketch after sunris…

The comet's nucleus appeared elongated on November 5th (top) and definitely split the next day. The five-minute exposure on the 5th began at 13:14 UT, the one-minute one on the 6th at 13:25 C. Capen and J. Young used the 6-inch Table Mountain f/15 refractor.

nature. In the case of Comet 1882 H, one month after peribellion passage, five separate condensations were seen along a 40-second arc. (See a picture of them in February, 1960, SKY AND TELESCOPE, page 204.)

To professional astronomers, Comet Reys-Seki provided a very welcome opportunity to observe the spectrum of a great comet at a small…