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Re: [comets-ml] Re: Urgent! On The Current Bright Kreutz Group Comet in LASCO C3

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  • Michal Kusiak
    Comet is still visible in solar elongation ~3.5 deg. At this moment comet saturated C3 detector. Magnitude perhaps 0 (maybe -1) mag and still go to up. If the
    Message 1 of 18 , Jan 2, 2010
      Comet is still visible in solar elongation ~3.5 deg.
      At this moment comet saturated C3 detector. Magnitude perhaps 0 (maybe -1) mag and still go to up.
      If the comet were discoovered yesterday (SOHO data were not available yesterday), it would be detected with te 30-m radiotelescope IRAM today between 9-15 UT.

      Regards,
      Michal



      >
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      > Is it still observable in the Lasco images?
      >
      > Magnitude estimates?
      >
      > Thanks,
      >
      > Ed Murray
      >
      > [Non-text portions of this message have been removed]
      >
      >
      >
      >
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    • Pachacoti
      More to come: NET UCAC-2 AWST01A C2010 01 02.01267 19 04 34.50 -27 50 25.4 5.9 R 249 AWST01A C2010 01 02.02934 19 04 34.77 -27 47 38.1
      Message 2 of 18 , Jan 2, 2010
        More to come:

        NET UCAC-2
        AWST01A C2010 01 02.01267 19 04 34.50 -27 50 25.4 5.9 R 249
        AWST01A C2010 01 02.02934 19 04 34.77 -27 47 38.1 5.8 R 249
        AWST01A C2010 01 02.07126 19 04 33.69 -27 40 31.0 5.7 R 249
        AWST01A C2010 01 02.09601 19 04 34.40 -27 36 44.5 5.7 R 249
        AWST01A C2010 01 02.11267 19 04 36.02 -27 33 18.8 5.6 R 249
        AWST01A C2010 01 02.13784 19 04 33.20 -27 29 23.9 5.4 R 249
        AWST01A C2010 01 02.17991 19 04 31.20 -27 22 12.2 5.3 R 249
        AWST01A C2010 01 02.19602 19 04 31.31 -27 19 20.9 5.1 R 249
        AWST01A C2010 01 02.22101 19 04 31.47 -27 15 14.7 5.0 R 249
        AWST01A C2010 01 02.23767 19 04 30.07 -27 12 24.5 4.9 R 249
        AWST01A C2010 01 02.26267 19 04 27.01 -27 08 16.0 4.7 R 249
        AWST01A C2010 01 02.27934 19 04 27.83 -27 05 11.6 4.6 R 249
        AWST01A C2010 01 02.32102 19 04 24.49 -26 58 08.2 4.3 R 249
        AWST01A C2010 01 02.32102 19 04 24.49 -26 58 08.2 4.3 R 249
        AWST01A C2010 01 02.36269 19 04 22.99 -26 50 57.5 3.7 R 249
        AWST01A C2010 01 02.40473 19 04 24.12 -26 43 37.7 3.5 R 249
        AWST01A C2010 01 02.43317 19 04 19.34 -26 38 46.3 3.3 R 249
        AWST01A C2010 01 02.44755 19 04 18.38 -26 36 16.6 3.3 R 249
        AWST01A C2010 01 02.47101 19 04 16.88 -26 32 08.3 3.1 R 249
        AWST01A C2010 01 02.48767 19 04 15.41 -26 29 15.4 3.1 R 249
        AWST01A C2010 01 02.51269 19 04 13.24 -26 24 41.5 3.0 R 249
        AWST01A C2010 01 02.52934 19 04 12.13 -26 21 49.5 2.6 R 249
        AWST01A C2010 01 02.57101 19 04 08.35 -26 14 24.7 2.7 R 249
        AWST01A C2010 01 02.59601 19 04 06.17 -26 09 57.8 2.3 R 249
        AWST01A C2010 01 02.61269 19 04 03.94 -26 06 55.1 2.4 R 249
        AWST01A C2010 01 02.63781 19 04 01.06 -26 02 27.8 2.2 R 249
        AWST01A C2010 01 02.65435 19 03 59.68 -25 59 26.5 2.2 R 249
        AWST01A C2010 01 02.67934 19 03 55.97 -25 54 45.1 2.1 R 249
        AWST01A C2010 01 02.69601 19 03 54.44 -25 51 53.0 1.9 R 249
        AWST01A C2010 01 02.72101 19 03 50.83 -25 47 23.0 1.7 R 249
        AWST01A C2010 01 02.72101 19 03 50.83 -25 47 23.0 1.7 R 249
        AWST01A C2010 01 02.73767 19 03 48.88 -25 44 10.7 1.6 R 249
        AWST01A C2010 01 02.76267 19 03 45.12 -25 39 23.0 1.9 R 249
        AWST01A C2010 01 02.77934 19 03 44.12 -25 36 26.3 2.3 R 249
        AWST01A C2010 01 02.82101 19 03 40.50 -25 28 52.1 1.6 R 249
        ----- end -----

        I'm afraid the photometry measurement of later sequences will be seriously influenced due to the saturation of the comet. Btw, the distortion of the C3 images is really disgusting...

        Cheers,
        Wentao

        --- In comets-ml@yahoogroups.com, Michal Kusiak <komeciarz@...> wrote:
        >
        >
        > Comet is still visible in solar elongation ~3.5 deg.
        > At this moment comet saturated C3 detector. Magnitude perhaps 0 (maybe -1) mag and still go to up.
        > If the comet were discoovered yesterday (SOHO data were not available yesterday), it would be detected with te 30-m radiotelescope IRAM today between 9-15 UT.
        >
        > Regards,
        > Michal
      • Mike Mattei
        Hi Robert I would be interested in a video of this comet could you send it to me please? Thanks Mike Mattei micmattei@comcast.net ... From: Matson, Robert D.
        Message 3 of 18 , Jan 2, 2010
          Hi Robert

          I would be interested in a video of this comet could you send it to me please?

          Thanks
          Mike Mattei

          micmattei@...


          ----- Original Message -----
          From: Matson, Robert D.
          To: comets-ml@yahoogroups.com
          Sent: Saturday, January 02, 2010 4:52 PM
          Subject: RE: [comets-ml] Re: Urgent! On The Current Bright Kreutz Group Comet in LASCO C3



          Yes, still very visible in LASCO, and has gone to negative magnitude. I
          have created a movie of all of today's LASCO C3 images if anyone wants
          me to forward it to them. (Size is about 5 megabytes, .AVI format).

          --Rob

          [Non-text portions of this message have been removed]





          [Non-text portions of this message have been removed]
        • Matson, Robert D.
          ... Significant radial distortion for a field of view as wide as LASCO-C3 is pretty much unavoidable. I typically model much narrower-field, space-based
          Message 4 of 18 , Jan 2, 2010
            > I'm afraid the photometry measurement of later sequences will be
            > seriously influenced due to the saturation of the comet. Btw, the
            > distortion of the C3 images is really disgusting...

            Significant radial distortion for a field of view as wide as LASCO-C3
            is pretty much unavoidable. I typically model much narrower-field,
            space-based sensors with 5th or 7th order polynomials (not an option
            for Astrometrica, I'm afraid). --Rob


            [Non-text portions of this message have been removed]
          • Lode Stevens
            Could there be a reflection at 9 o clock and I see an object just before the comet in the same area. Please confirm ? Lode Stevens Belgium ... From: P. Edward
            Message 5 of 18 , Jan 2, 2010
              Could there be a reflection at 9 o' clock and I see an object just before the comet in the same area. Please confirm ?

              Lode Stevens Belgium


              ----- Original Message -----
              From: P. Edward Murray
              To: comets-ml@yahoogroups.com
              Sent: Saturday, January 02, 2010 10:47 PM
              Subject: Re: [comets-ml] Re: Urgent! On The Current Bright Kreutz Group Comet in LASCO C3



              Is it still observable in the Lasco images?

              Magnitude estimates?

              Thanks,

              Ed Murray

              [Non-text portions of this message have been removed]





              [Non-text portions of this message have been removed]
            • KDConod
              You can make your own movie with the SOHO movie theater. http://sohodata.nascom.nasa.gov/cgi-bin/soho_movie_theater Select Lasco C3 Start at 2010-01-01, end at
              Message 6 of 18 , Jan 2, 2010
                You can make your own movie with the SOHO movie theater.

                http://sohodata.nascom.nasa.gov/cgi-bin/soho_movie_theater


                Select Lasco C3
                Start at 2010-01-01, end at 2010-01-02

                You can watch the comet enter the field of view from the lower left.

                Kevin Conod
                kdconod@...

                [Non-text portions of this message have been removed]
              • W.-t. Hsu
                I attempted to observe the comet between 00:30 UT to 03:00 UT via a 8.0cm-refractor f/7.5 without any success unfortunately, maybe due to the unfavorable sky
                Message 7 of 18 , Jan 2, 2010
                  I attempted to observe the comet between 00:30 UT to 03:00 UT via a 8.0cm-refractor f/7.5 without any success unfortunately, maybe due to the unfavorable sky conditions of being heavily hazy and smoggy, and also due to my disconcentration caused by fatigue after a white night, or just mightbe due to lack of experiences in observing daylight comets... Anyhow, I have to admit my failure.

                  Cheers,
                  Wentao
                  *******************************************************
                  Wentao Xu
                  (Man-To Hui, Wen-Tao Hsu)
                  +23deg09m12s, +113deg18m54s
                  Guangzhou, China Mainland
                  http://comethunter.lamost.org


                  Yahoo!香港提供網上安全攻略,教你如何防範黑客! 請前往 http://hk.promo.yahoo.com/security/ 了解更多!
                • jbortle@aol.com
                  My impression of the comet s brightness at 03 hours UT on January 3rd, by comparision with previous images of Antares in the SOHO C3 field, suggests to me that
                  Message 8 of 18 , Jan 2, 2010
                    My impression of the comet's brightness at 03 hours UT on January 3rd, by comparision with previous images of Antares in the SOHO C3 field, suggests to me that the comet probably not brighter than 0.0 magnitude at this time. Based on my long experience in observing objects in the daytime sky very close to the sun, I would consider the possibility of successfully detecting this comet with modest apertures as probably no better than marginal at the moment.

                    J.Bortle


                    --- In comets-ml@yahoogroups.com, "W.-t. Hsu" <wentaopachacoti@...> wrote:
                    >
                    > I attempted to observe the comet between 00:30 UT to 03:00 UT via a 8.0cm-refractor f/7.5 without any success unfortunately, maybe due to the unfavorable sky conditions of being heavily hazy and smoggy, and also due to my disconcentration caused by fatigue after a white night, or just mightbe due to lack of experiences in observing daylight comets... Anyhow, I have to admit my failure.
                    >
                    > Cheers,
                    > Wentao
                    > *******************************************************
                    > Wentao Xu
                    > (Man-To Hui, Wen-Tao Hsu)
                    > +23deg09m12s, +113deg18m54s
                    > Guangzhou, China Mainland
                    > http://comethunter.lamost.org
                    >
                    >
                    > Yahoo!­»´ä´£¨Ñºô¤W¦w¥þ§ð²¤¡A±Ð§A¦p¦ó¨¾½d¶Â«È! ½Ð«e©¹ http://hk.promo.yahoo.com/security/ ¤F¸Ñ§ó¦h!
                    >
                  • W.-t. Hsu
                    I made another attempt this afternoon since 14:00 local time (6:00 UT), yet I failed again even though I observed in a place where the sun was just merely
                    Message 9 of 18 , Jan 3, 2010
                      I made another attempt this afternoon since 14:00 local time (6:00 UT), yet I failed again even though I observed in a place where the sun was just merely occulted by an eave on the roofdeck of my dorm. The sky was just translucent, and smog as well as haze led to a pretty scatteringly pale background which might prevent me from making a successful observation of this staggering comet. Another reason resulting in my failure should be lack of experience observing comets and planets in daylight time. The eyes are prone to defocus unconsciously when observing something dim in daylight background. I undubiously need more training concerning this...

                      Cheers,
                      Wentao
                      *******************************************************
                      Wentao Xu
                      (Man-To Hui, Wen-Tao Hsu)
                      +23deg09m12s, +113deg18m54s
                      Guangzhou, China Mainland
                      http://comethunter.lamost.org

                      --- jbortle@... <jbortle@...> wrote:


                      My impression of the comet's brightness at 03 hours UT on January 3rd, by comparision with previous images of Antares in the SOHO C3 field, suggests to me that the comet probably not brighter than 0.0 magnitude at this time. Based on my long experience in observing objects in the daytime sky very close to the sun, I would consider the possibility of successfully detecting this comet with modest apertures as probably no better than marginal at the moment.

                      J.Bortle


                      --- In comets-ml@yahoogrou ps.com, "W.-t. Hsu" <wentaopachacoti@ ...> wrote:
                      >
                      > I attempted to observe the comet between 00:30 UT to 03:00 UT via a 8.0cm-refractor f/7.5 without any success unfortunately, maybe due to the unfavorable sky conditions of being heavily hazy and smoggy, and also due to my disconcentration caused by fatigue after a white night, or just mightbe due to lack of experiences in observing daylight comets... Anyhow, I have to admit my failure.
                      >
                      > Cheers,
                      > Wentao
                      > ************ ********* ********* ********* ********* *******
                      > Wentao Xu
                      > (Man-To Hui, Wen-Tao Hsu)
                      > +23deg09m12s, +113deg18m54s
                      > Guangzhou, China Mainland
                      > http://comethunter. lamost.org


                      Yahoo!香港提供網上安全攻略,教你如何防範黑客! 請前往 http://hk.promo.yahoo.com/security/ 了解更多!
                    • costeira1
                      Dear friends, Accordind lastest C2 images, this comet desintegrated: SpaceWeather note: DISINTEGRATING COMET: A bright comet discovered by NASA s STEREO-A
                      Message 10 of 18 , Jan 3, 2010
                        Dear friends,

                        Accordind lastest C2 images, this comet desintegrated:

                        SpaceWeather note:

                        DISINTEGRATING COMET: A bright comet discovered by NASA's STEREO-A spacecraft is swinging by the sun today and apparently disintegrating.

                        http://www.spaceweather.com/images2010/03jan10/comet_c2_anim.gif?PHPSESSID=4i8e12ak23hs0d2v0suc59l264

                        []s do Alex!
                      • Jordi Camarasa
                        WOW!!! Thanks Alex!!! Observatorio Paus MPC B49 _____ De: comets-ml@yahoogroups.com [mailto:comets-ml@yahoogroups.com] En nombre de costeira1 Enviado el:
                        Message 11 of 18 , Jan 3, 2010
                          WOW!!! Thanks Alex!!!







                          Observatorio Paus MPC B49



                          _____

                          De: comets-ml@yahoogroups.com [mailto:comets-ml@yahoogroups.com] En nombre
                          de costeira1
                          Enviado el: domingo, 03 de enero de 2010 22:43
                          Para: comets-ml@yahoogroups.com
                          Asunto: [comets-ml] Re: On The Current Bright Kreutz...





                          Dear friends,

                          Accordind lastest C2 images, this comet desintegrated:

                          SpaceWeather note:

                          DISINTEGRATING COMET: A bright comet discovered by NASA's STEREO-A
                          spacecraft is swinging by the sun today and apparently disintegrating.

                          http://www.spacewea
                          <http://www.spaceweather.com/images2010/03jan10/comet_c2_anim.gif?PHPSESSID=
                          4i8e12ak23hs0d2v0suc59l264>
                          ther.com/images2010/03jan10/comet_c2_anim.gif?PHPSESSID=4i8e12ak23hs0d2v0suc
                          59l264

                          []s do Alex!





                          [Non-text portions of this message have been removed]
                        • jbortle@aol.com
                          ... Clearly, the comet s coma, or head, abruptly becomes very ghostly between the 1130UT and 1154UT C2 frames, probably signaling the approximate time of the
                          Message 12 of 18 , Jan 3, 2010
                            --- In comets-ml@yahoogroups.com, "costeira1" <costeira1@...> wrote:
                            >
                            > Dear friends,
                            >
                            > Accordind lastest C2 images, this comet desintegrated:
                            >
                            > SpaceWeather note:
                            >
                            > DISINTEGRATING COMET: A bright comet discovered by NASA's STEREO-A spacecraft is swinging by the sun today and apparently disintegrating.
                            >
                            > http://www.spaceweather.com/images2010/03jan10/comet_c2_anim.gif?PHPSESSID=4i8e12ak23hs0d2v0suc59l264
                            >
                            > []s do Alex!


                            Clearly, the comet's coma, or head, abruptly becomes very ghostly between the 1130UT and 1154UT C2 frames, probably signaling the approximate time of the exhaustion of the nucleus.

                            I find it a bit odd that SpaceWeather should suggest that the disembodied tail might re-appear from behind the occulting disk several hours later in spite of the fact that the pre-perihelion observable tail can clearly be seen to disapate in the C2 frames acquired during the 13th hour UT. In all likelihood, surviving tails can only be generated post-T (such as in 1887), a feat that none of the pygmy sungrazers seems capable of accomplishing.

                            J.Bortle
                          • Alan Watson
                            Gidday all, This link show a persistent tail example for a bright SOHO comet in 2007.
                            Message 13 of 18 , Jan 3, 2010
                              Gidday all,
                              This link show a persistent tail example for a bright SOHO comet in 2007.
                              http://soho.nascom.nasa.gov/pickoftheweek/old/15jun2007/grazecrop_best.mov

                              Thanks for all the interest in this come shown by many of you here.
                              The STEREO Cor2 images will be very interesting as they are released in the next few days.
                              This link is the discovery frames, look for the faint streak rising from lower left.
                              http://www.flickr.com/photos/40303621@N03/4239022012/

                              The comet will be STEREO 23 when the counting's done ?

                              Kind regards, Alan Watson.


                              [Non-text portions of this message have been removed]
                            • P. Edward Murray
                              Alan, Congratulations on your discovery, so sorry to hear that it didn t make it.... Best wishes, Ed Murray [Non-text portions of this message have been
                              Message 14 of 18 , Jan 3, 2010
                                Alan,

                                Congratulations on your discovery, so sorry to hear that it didn't make it....

                                Best wishes,

                                Ed Murray

                                [Non-text portions of this message have been removed]
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