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Re: LULIN 2007 N3 in HI1a?

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  • algwat
    Gidday From Rainer s and Dimitry s feedback, I think I have it now. See the image I will upload now. thanks Al (0,0) image pixvalue x y slice 2
    Message 1 of 9 , Oct 24, 2008
      Gidday From Rainer's and Dimitry's feedback,
      I think I have it now. See the image I will upload now. thanks Al

      (0,0) image pixvalue x y slice
      2 H1a:20081018_192901_s4h1A 52.4023 481 470 14
      3 H1a:20081018_232901_s4h1A 50.4876 490 470 15
      4 H1a:20081019_032901_s4h1A 53.1319 498 470 16
      5 H1a:20081019_072901_s4h1A 53.2071 507 470 17
      6 H1a:20081019_112901_s4h1A 51.8941 515 470 18
      7 H1a:20081019_152901_s4h1A 50.4876 524 470 19
      8 H1a:20081019_192901_s4h1A 48.9081 533 469 20
      9 H1a:20081021_112901_s4h1A 50.8822 619 468 30

      >
      >
      > It is probably C/2007 N3 (Lulin):
      >
      > 20081015_012901_s4h1A.fts 287,551
      > 20081018_132901_s4h1A.fts 468,553
      > 20081021_132901_s4h1A.fts 623,555
      >
      > Now it moves very slowly.
      >
      > Dimitry
      >
      >

      This doesn't seem to fit.
      JPL Horizons has for 20081021_132901 (mid-time 13:44)
      RA 17h 24m 08.5s Decl -22d 06' 31" (Lulin as observed from STEREO-A)
      and this position corresponds to (589,466)

      Rainer

      --- In stereohunter@yahoogroups.com, "algwat" <awat4309@...> wrote:
      >
      > Gidday all,
      > Comet 2007 N3 Lulin should be in HI1a. I cannot detect it as yet.
      > Have any of you been able to find it?
      > Approx mag 9.5
      >
      > Kind regards, Alan
      >
    • Dimitry Chestnov
      ... Sorry, maybe I flipped images. Real position must be 1024 - y = 1024 - 555 = 469 corrected positions: 20081015_012901_s4h1A.fts 287,473
      Message 2 of 9 , Oct 24, 2008
        --- In stereohunter@yahoogroups.com, "Rainer Kracht" <r.kracht@...>
        wrote:
        >
        > >
        > >
        > > It is probably C/2007 N3 (Lulin):
        > >
        > > 20081015_012901_s4h1A.fts 287,551
        > > 20081018_132901_s4h1A.fts 468,553
        > > 20081021_132901_s4h1A.fts 623,555
        > >
        > > Now it moves very slowly.
        > >
        > > Dimitry
        > >
        > >
        >
        > This doesn't seem to fit.
        > JPL Horizons has for 20081021_132901 (mid-time 13:44)
        > RA 17h 24m 08.5s Decl -22d 06' 31" (Lulin as observed from STEREO-A)
        > and this position corresponds to (589,466)
        >
        > Rainer
        >

        Sorry, maybe I flipped images.

        Real position must be 1024 - y = 1024 - 555 = 469


        corrected positions:

        20081015_012901_s4h1A.fts 287,473
        20081018_132901_s4h1A.fts 468,471
        20081021_132901_s4h1A.fts 623,469
      • Alan Watson
        Gidday all, Lulin is clearing the solar artifacts and shows good motion. it will look good for the next few weeks a good target to measure, for those that do
        Message 3 of 9 , Dec 31, 2008
          Gidday all,
          Lulin is clearing the solar artifacts and shows good motion.
          it will look good for the next few weeks a good target to measure, for those that do this.
          kind regards Alan.
           
          1 H1b:20081223_224901_s4h1B 97.9183 1 465 136
          2 H1b:20081224_164901_s4h1B 109.7543 43 465 163
          3 H1b:20081225_024901_s4h1B 95.4254 66 465 178
          4 H1b:20081226_000901_s4h1B 95.9062 114 465 210
          5 H1b:20081226_212901_s4h1B 108.0463 162 464 242
          6 H1b:20081228_012901_s4h1B 78.1281 225 465 284
          Happy new year to all.
        • algwat
          Gidday all, Lulin is detectable in HI2b images kind regards, Alan. h2b:20090202_220921_s4h2B 147.1156 470 504 24 h2b:20090202_140921_s4h2B 143.9062 464 504 20
          Message 4 of 9 , Feb 6, 2009
            Gidday all,
            Lulin is detectable in HI2b images
            kind regards, Alan.

            h2b:20090202_220921_s4h2B 147.1156 470 504 24
            h2b:20090202_140921_s4h2B 143.9062 464 504 20
            h2b:20090202_040921_s4h2B 131.3963 456 504 15
            h2b:20090201_020921_s4h2B 138.4810 438 504 2
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