特大新闻，2006P1有可能成为耀眼的超亮彗星！！！！！

另外，这两天其他地方傍晚拍的地面照片，很有40年前的池谷关彗星风范啊..

不只是光度，现在连彗尾样子也很像了

[ 本帖最后由 pooky 于 2007-1-18 20:01 编辑 ]

今天再翻看过照片

这两天彗尾的姿态很像1976年3月黎明前的威斯特彗星。不过威斯特彗星是向左弯，它就是向右弯了。拼在一起看真像一对艳丽的翅膀

我知道
我一直有双隐形的翅膀......

C/2006 P1 (McNaught)
     Total-magnitude and coma-diameter estimates (visual unless otherwise noted):
2007
Jan. 19.51, -0.4, -- (A. Pearce, City Beach, W. Australia, naked eye; 20-deg tail, striations easily visible);
     19.01, -3.0:, & 2' (W. Robledo, Pilar, Argentina, naked eye; tail > 3.5 deg long; comp. w/ Venus; after sunset);
     18.95, -2:, -- (A. Amorim, Florianopolis, Brazil, naked eye; nautical twilight;  tail about 5 deg long);
     18.50, -2.1, -- (A. Pearce, City Beach, W. Australia, naked eye; 4.5-deg tail);
     17.50, -2.7, -- (A. Pearce, City Beach, W. Australia, naked eye; 5-deg tail);
     17.50, -2.5, -- (D. J. Frew, Perth Observatory, 8x42 binoculars and naked eye; comp. w/ Venus and alpha Cen; est. uncertainty +/- 0.5 mag; tail length about 5 deg);
     17.03, -2.4, -- (W. Liller, Vina del Mar, Chile, 25x100 binoculars; comp. w/ Venus; 4.0-deg tail; head nearly stellar in appearance);
     16.94, -2.8, -- (S. J. O'Meara, Mauna Loa, HI, U.S.A., 10x50 binoculars; est. uncertainly +/- 0.2 mag; 0.5-deg tail; comet alt. about 50 deg; daylight);
     16.93, -3.7*, 6', 8' (J. G. de S. Aguiar, Campinas, Brasil, naked eye; tail > 2 deg long);
     16.91, -4.0, 1' (W. Souza, Sao Paulo, Brazil, naked eye; comp. w/ Venus; tail > 2 deg long);
     16.91, -4.0*, 1' (W. Souza, Sao Paulo, Brazil, naked eye; tail > 2 deg long; comp. w/ Venus);
     16.50, -3.4*, 1' (A. Pearce, City Beach, W. Australia, 20x80 binoculars; 2.0-deg tail; after sunset);
     16.48, -3:*, & 2' (D. J. Frew, Perth Observatory, 8x42 binoculars; est. uncertainty +/- 1 mag; tail about 0.5 deg long; civil twilight);
     15.94, -3.8, -- (S. J. O'Meara, Mauna Loa, HI, U.S.A., naked eye; tail about 0.25 deg long; comet alt. about 50 deg in daylight);
     15.76, -4.3, -- (R. A. Keen, Mt. Thorodin, CO, U.S.A., 7x50 binoculars; comp. w/ Venus; daylight);
     15.48, -5.2*, +8' (K. Hornoch, J. Srba, and E. Brezina, Vsetin Observatory, Czech Republic, 6.3-cm f/8 Maksutov-Cassegrain telescope + CCD + neutral-density filter; daylight);
     15.48, -4.0:*, & 3' (D. J. Frew, Perth Observatory, 8x42 binoculars; est. uncertainty +/- 0.5 mag; tail about 0.8 deg long; civil twilight);
     15.45, -4.4:*, 1' (K. Hornoch, Tisnov, Czech Republic, 10x80 binoculars; comp. w/ Venus; daylight; no tail);
     15.17, -4.5:, -- (Y. Nagai, Gunma, Japan, 20x100 binoculars; 0.2-deg tail; daylight; comp. with Venus);
     15.04, -5.5:, -- (S. J. O'Meara, Mauna Loa, HI, U.S.A., naked eye; daylight; est. uncertainty +/- 0.5 mag; alt. 45 deg; 0.5-deg tail, less pronounced than yesterday; head more stellar than yesterday; comet still much brighter than Venus);
     14.84, -4.0, 0'.5 (W. Souza, Sao Paulo, Brazil, 11x80 binoculars; daylight; comp. w/ Venus);
     14.78, -5.5:, -- (C. S. Morris, Fillmore, CA, U.S.A., 20x80 binoculars; comp. w/ Venus; daylight; comet alt. 26 deg; tail about 0.25 deg long);
     14.71, -6:*, -- (J. J. Gonzalez, Asturias, Spain, naked eye; 1.5-deg tail in p.a. 50 deg; just before sunset; alt. 2.2 deg);
     14.66, -5.4*, 4' (T. Scarmato, Calabria, Italy, 7x50 binoculars; alt. 2 deg; tail about 1 deg long);
     14.59, -4.6:*, -- (H. Dahle, Blindern, Oslo, Norway, 9x63 binoculars; 0.15-deg tail in p.a. 90 deg, alt. 3.0 deg; daylight);
     14.58, -4.5:, -- (B. H. Granslo, Fjellhamar, Norway, 7x50 binoculars; 0.1-deg tail in p.a. 95 deg; alt. 3.6 deg; before sunset);

Brightest comets seen since 1935
Below are listed, in order of apparent brightness (magnitude), the brightest comets observed by ground-based observers since 1935, as documented in the ICQ archive and IAU Circulars. The "peak m1" is the maximum observed total visual magnitude as seen by ground-based observers; this is an average value determined from the most experienced observers (in other words, some brighter magnitudes have been excluded for some comets). For example, veteran visual comet observer John E. Bortle has noted that the following comets in the list below were probably significantly brighter (sometimes by several magnitudes) at peak brightness than indicated below: C/1965 S1 (Ikeya-Seki), C/1947 X1 (Southern comet), C/1948 V1 (Eclipse comet), C/1962 C1 (Seki-Lines), C/1973 E1 (Kohoutek) -- but the paucity of observers working to make good magnitude estimates many years ago, and the problems involved when comets are very near the sun and/or are much brighter than available comparison stars/planets, make it difficult to determine what the peak values should have been. (It has been widely suggested that C/1965 S1 must have peaked around at least mag -11 or -12 when it grazed the sun around perihelion.) Peak magnitudes in parentheses are more highly uncertain (or not completely determined). Only those comets brighter than fourth magnitude are listed below.

One can see from this that, on average, we are able to view a comet that is brighter than fourth magnitude once every two years, a comet brighter than second mag once every 5.5 years or so, a comet brighter than first magnitude every 10 years or so, and a comet brighter than mag 0 roughly once every 15 years; of course, sometimes there will be two bright comets in a span of a year, while at other times there will be a 20-year interval between such apparitions. [updated 2007 Jan. 15]


peak
  m1         Comet
----     ----------------------
(-7)       C/1965 S1 (Ikeya-Seki)
(-5.5)     C/2006 P1 (McNaught)
(-4)       C/1947 X1 (Southern comet)
-3.0      C/1975 V1 (West)
-0.8      C/1995 O1 (Hale-Bopp)

(-0.5)     C/1956 R1 (Arend-Roland)
(-0.5)     C/2002 V1 (NEAT)
  0.0      C/1996 B2 (Hyakutake)
  0.0      C/1969 Y1 (Bennett)
  0.5      C/1998 J1 (SOHO)

  1.0      C/1948 V1 (Eclipse comet)
  1.0      C/1957 P1 (Mrkos)
  1.0      C/1962 C1 (Seki-Lines)
(1)       C/1970 K1 (White-Ortiz-Bolelli)
  1.7      C/1983 H1 (IRAS-Araki-Alcock)

(2)       C/1941 B2 (de Kock-Paraskevopoulos)
(2.2)     C/2002 T7 (LINEAR)
  2.4     1P/1982 U1 (Halley)
  2.5      C/1973 E1 (Kohoutek)
  2.5      C/2000 WM_1 (LINEAR)

  2.7      C/1964 N1 (Ikeya)
  2.8      C/2001 Q4 (NEAT)
  2.8      C/1989 W1 (Aarseth-Brewington)
  2.8      C/1963 A1 (Ikeya)
  2.9   153P/2002 C1 (Ikeya-Zhang)

  3.0      C/2001 A2 (LINEAR)
  3.3      C/1936 K1 (Peltier)
(3.3)     C/2004 F4 (Bradfield)
  3.5      C/2004 Q2 (Machholz)
  3.5      C/1942 X1 (Whipple-Fedtke-Tevzadze)

  3.5      C/1940 R2 (Cunningham)
  3.5      C/1939 H1 (Jurlof-Achmarof-Hassel)
  3.5      C/1959 Y1 (Burnham)
  3.5      C/1969 T1 (Tago-Sato-Kosaka)
  3.5      C/1980 Y1 (Bradfield)

(3.5)     C/1961 O1 (Wilson-Hubbard)
(3.5)     C/1955 L1 (Mrkos)
  3.6      C/1990 K1 (Levy)
  3.7      C/1975 N1 (Kobayashi-Berger-Milon)
  3.9      C/1974 C1 (Bradfield)
  3.9      C/1937 N1 (Finsler)



--------------------------------------------------------------------------------

More from the ICQ archive: During 1950-2003, there were three documented cases of two comets being observed via naked eye at the same general time (though not necessarily from the same geographical location or same instantaneous time) -- all three cases being with both comets at total visual mag 5-6 at the time. There were more than a dozen additional cases during that 5-decade span in which two (or sometimes even three) comets were being observed at the same general time where both (or all three) comets were at mag 6.5 or brighter. Some of these may indeed have been detected via naked eye, though magnitude estimates are not available in the archive to substantiate this. The example of C/2001 Q4 and C/2002 T7 being both brighter than fourth magnitude during a period of time in 2004 April-May, joined unexpectedly and briefly by C/2004 F4, is thus highly unusual.

retract my statement

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With the light pollution wiping out the great glow I experienced on sat night at a dark site - she is prettier np - this 1 sec twilight shot reminds me strongly of the naked eye view http://southern-x.org/so_x/p1/p121twi_0789.jpg next 4 sec exp - both with 50mm f1.4 lens, no cropping, over looking the suburbs of Adelaide, 5 min drive from where I live, weather surprised me by clearing up last night, for a short while anyway. :-) http://southern-x.org/so_x/p1/P121st_0823.jpg Kearn Jones 35 south

[ 本帖最后由 suhuasky 于 2007-1-22 12:32 编辑 ]

14.71, -6:*, -- (J. J. Gonzalez, Asturias, Spain, naked eye; 1.5-deg tail in p.a. 50 deg; just before sunset; alt. 2.2 deg);

peak
  m1         Comet
----     ----------------------
(-7)       C/1965 S1 (Ikeya-Seki)
(-5.5)     C/2006 P1 (McNaught)



这亮度……变态
月亮不才-12.7么？

更郁闷的是看不到了……
我是沈阳的……

哈雷2.4等，这个家伙-5.5等……亮度差1000多倍？

另外有点要注意的是，彗尾在北半球仍能拍摄到。大概在太阳刚下山後1～2小时内西南方地平上

skytonight.com/observing/highlights/5268431.html

错过郁闷啊

“核影”很清晰
彗星正在逐渐变暗

整个彗星是一个冰激凌，彗核是一馒头。天上和人间...........

C/1962 III (Seki-Lines)

1月24－25日彗头特写

南半球1月26日2006P1凌晨可见
照片：

这辈子又多了一个遗憾

精彩之极，无与伦比，真是壮观，为什么2004F4没有这么幸运呢？

[ 本帖最后由 suhuasky 于 2007-1-31 12:55 编辑 ]

继续John Drummond照片集

[ 本帖最后由 suhuasky 于 2007-1-31 12:56 编辑 ]

继续贴图John Drummond照片集