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Re: ISON in outburst.

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  • Juan José González Suárez
    C/2012 S1 (ISON): 2013 Nov. 14.22 UT: m1=6.1, Dia.=3 , DC=8, Tail: 0.7 deg. in PA 300 deg, 10x50B. [ In outburst. Near-stellar appearance. Low altitude (15
    Message 1 of 3 , Nov 14, 2013
      C/2012 S1 (ISON):
      2013 Nov. 14.22 UT: m1=6.1, Dia.=3', DC=8,
      Tail: 0.7 deg. in PA 300 deg, 10x50B.
      [ In outburst. Near-stellar appearance. Low altitude (15 deg)
      and zodiacal light interference didn't allow for making a
      naked eye observation and estimate. Mountain location,
      very clear sky.].

      ( Cueto Rosales - Riello, alt. 1420 m, Leon, N. Spain ).

      -------------------------------------------------------------
      ICQ Format:

      2012S1 2013 11 14.21 M 6.3 TK 10.0B 25 2.5 8 0.7 300 ICQ
      XX GON05

      2012S1 2013 11 14.22 M 6.1 TK 5.0B 10 3 8 0.7 300 ICQ
      XX GON05
      -------------------------------------------------------------

      J. J. Gonzalez
    • 6375e89440ac77136e60c6114e64e428
      C/2012 S1 (ISON) 2013 11 14.427(round to 14.43): m1= 5.8, Coma dia.= 1.5 , DC= 8 Altitude around 17° at the beginning of the observation. ICQ Format ...
      Message 2 of 3 , Nov 14, 2013

        C/2012 S1 (ISON)
        2013 11 14.427(round to 14.43): m1= 5.8, Coma dia.= 1.5', DC= 8
        Altitude around 17° at the beginning of the observation.



        ICQ Format

         2012S1 2013 11 14.43 S 5.8 HD 5.0B 7 1.5 8 &10.0m 300 ICQ XX CHE0: 



        ---In comets-ml@yahoogroups.com, <jjgonzalez@...> wrote:

        C/2012 S1 (ISON):
        2013 Nov. 14.22 UT: m1=6.1, Dia.=3', DC=8,
        Tail: 0.7 deg. in PA 300 deg, 10x50B.
        [ In outburst. Near-stellar appearance. Low altitude (15 deg)
        and zodiacal light interference didn't allow for making a
        naked eye observation and estimate. Mountain location,
        very clear sky.].

        ( Cueto Rosales - Riello, alt. 1420 m, Leon, N. Spain ).

        -------------------------------------------------------------
        ICQ Format:

        2012S1 2013 11 14.21 M 6.3 TK 10.0B 25 2.5 8 0.7 300 ICQ
        XX GON05

        2012S1 2013 11 14.22 M 6.1 TK 5.0B 10 3 8 0.7 300 ICQ
        XX GON05
        -------------------------------------------------------------

        J. J. Gonzalez
      • martin mc kenna
        Hi all Three comets observed from N. Ireland this morning Nov 14th from 04.30 - 06.45 UT... C/2012 S1 ISON, comet has shown very dramatic change since my last
        Message 3 of 3 , Nov 14, 2013
          Hi all

          Three comets observed from N. Ireland this morning Nov 14th from 04.30 - 06.45 UT...

          C/2012 S1 ISON, comet has shown very dramatic change since my last observation with a compact extremely well condensed coma with very sharp edges (D.C:8) 3' in diameter, the central condensation now dominates much of diameter of the coma in the form of a bright white disk with a sharp coma wrapped around the disk with a short blue tail pointing to the SW, both the coma and tail looked blue in colour to me however this could have been the effect of the twilight background. Comet easily observed in 10-25mm binos and I was sure that had I a dark sky background I would have seen it with the naked eye! (a naked eye sighting as now been made!). In binos it has the appearance of a fuzzy star however the telescopic appearance reminded me of naked eye comet C/2002 V1 NEAT in twilight. ISON looks good and I think it's going to be a very nice comet.

          C/2013 R1 Lovejoy, naked eye comet above the Sickle of Leo as a faint smudge. In the 8" S.Cass and 10x25mm binos the comet was a wonderful sight with a large slightly elongated coma which was moderately condensed with hint of green colour. The tail was broad and straight and rather striking in the binos as a green bar. Mag +5.5, I suspect tail should be naked eye from a good dark site.

          C/2013 V3 Nevski, new comet which I swept up between the head of Hyrdra and Leo and in the form of a large but very diffuse irregular haze with a very low surface brightness, coma looked transparent with just a subtle brightening towards centre, stars could be seen through the outer coma. Glad to have seen this one and ticked it off the list. Nice crop of pre-dawn comets.

          Observations made on a night with high moisture, passing squally showers and poor trans and less than average seeing.


          Martin McKenna
          Maghera, N. Ireland
           




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