ВНИМАНИЕ! На форуме началось голосование в конкурсе - астрофотография месяца СЕНТЯБРЬ!
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S. Sako, H. Maehara, K. Motohara, S. Nishijima, Y. Kikuchi, and K.Arimatsu, University of Tokyo; K. Ohnishi, Nagano National College ofTechnology; and Y. Sarugaku, Institute of Space and Astronautical Science,Japan Aerospace Exploration Agency, Sagamihara, Japan, report on theirunsuccessful post-perihelion searches for the remnants of comet C/2012 S1,which fell apart near perihelion (cf. CBET 3731, IAUC 9266). Deep CCDsearches were made with the Kiso Wide Field Camera (KWFC) + I-band filter onDec. 7.9 and 16.9 UT, and with a Canon CMOS sensor (unfiltered) on Dec. 12.9and 13.9, both mounted on the Kiso 1.05-m Schmidt telescope; the field-of-viewof the KWFC and the CMOS sensor are 125' x 125' and 22' x 40' (north-south bywest-east), respectively. On Dec. 7.9, the area searched spanned 90' x 30'.The table below gives the imaging time, the center of the field-of-view,the offset in right ascension and declination (in degrees) of the image centerfrom the predicted ephemeris position (offset computed by S. Nakano, Sumoto,Japan), and the limiting magnitude.2013 UT R.A. (2000.0) Decl. Delta Delta Limiting R.A. Decl. magnitudeDec. 7.87 16 11 34.4 -00 49 12 0.00- 0.13+ 14.5 12.84 16 09 52.2 +09 59 42 0.12- 0.55+ 19.0 12.84 16 09 30.6 +10 14 58 0.21- 0.79+ 19.0 12.85 16 09 09.0 +10 30 07 0.30- 1.04+ 19.0 12.85 16 08 47.7 +10 45 23 0.39- 1.28+ 19.0 12.86 16 10 32.0 +09 34 27 0.04+ 0.09+ 19.0 13.83 16 09 55.6 +12 14 16 0.13- 0.47+ 19.0 13.84 16 09 11.9 +12 44 50 0.30- 0.95+ 19.0 13.84 16 08 50.3 +12 59 59 0.39- 1.19+ 19.0 13.85 16 09 30.2 +12 31 37 0.23- 0.71+ 19.0 13.85 16 10 35.1 +11 52 33 0.03+ 0.05+ 19.0 13.86 16 10 13.5 +12 03 41 0.05- 0.22+ 19.0 13.86 16 09 52.2 +12 18 48 0.14- 0.46+ 19.0 13.87 16 09 31.2 +12 33 53 0.23- 0.70+ 19.0 16.88 16 11 31.6 +19 45 05 0.07+ 0.14+ 15.5 Unsuccessful visual searches for the comet, with estimated limitingmagnitudes: Dec. 4.26 UT, [8.0 (B. H. Granslo, Roverkollen, Oslo, Norway,0.08-m refractor; altitude 5 degrees in twilight); Dec. 8.8, [10.6 (AkieHashimoto, Chichibu, Saitama-ken, Japan, 25x150 binoculars; communicated byS. Nakano, Sumoto, Japan). S. Nakano, Sumoto, Japan, has also reported the following unsuccessfulCCD searches for the comet after perihelion, with limiting magnitudes: Dec.8.85 UT, [16.6 (K. Kadota, Ageo, Japan, 0.16-m f/3.3 hyperbolic astrograph);8.88, [15 (Katsumi Yoshimoto, Yamaguchi, Japan, 16-cm reflector); 10.85, [17.2(Kadota); 12.86, [17 (Y. Ikari, Moriyama, Shiga-ken, Japan, 0.26-m reflector);14.86, [15.5 (Yoshimoto, Nikon digital camera + 180-mm f/2.8 lens).
Думаю глюк... Вот отчет японцев, из CBAT.
Здравствуйте! Об ISON есть какие-нибудь новости?Какое расстояние до Солнца, какая яркость?Она долетела до орбиты Марса?
Возможно кто-нибудь уже прикинул перевод хотя бы тезисно свежей статьи от 27 января 2014 Matthew M. Knight, Karl Battams http://arxiv.org/abs/1401.7028 "Preliminary Analysis of SOHO/STEREO Observations of Sungrazing Comet ISON (C/2012 S1) Around Perihelion" - "Предварительный анализ наблюдений SOHO и STEREO околосолнечной кометы ISON (C/2012 S1) близ перигелия"?