Loading ...
Sorry, an error occurred while loading the content.
 

Comet in HI1B - Unkown non-group

Expand Messages
  • alan
    This has been reported to Mr Sungrazer already. A very bright comet is moving top left quater. Unknown , non group. rgds Alan Watson (0,0) up left image pix
    Message 1 of 10 , Nov 16, 2009
      This has been reported to Mr Sungrazer already.
      A very bright comet is moving top left quater.
      Unknown , non group. rgds Alan Watson
      (0,0) up left image pix value x y slice.
      1 200911:20091113_000901_s4h1B 56.4040 23 416 1
      2 200911:20091113_004901_s4h1B 53.1977 26 416 2
      3 200911:20091113_012901_s4h1B 53.1628 29 418 3
      4 200911:20091113_020901_s4h1B 60.1462 32 420 4
      5 200911:20091113_024901_s4h1B 61.0561 35 421 5
      6 200911:20091113_032901_s4h1B 62.2929 38 422 6
      7 200911:20091113_040901_s4h1B 57.5182 41 423 7
      8 200911:20091113_044901_s4h1B 47.0123 43 424 8
      9 200911:20091113_052901_s4h1B 42.8668 46 425 9
      10 200911:20091113_060901_s4h1B 46.1428 49 427 10
      11 200911:20091113_064901_s4h1B 53.2620 52 428 11

      Known kruetz is here.
      12 200911:20091113_120901_s4h1B 47.6176 4 642 19
      13 200911:20091113_112901_s4h1B 36.8600 9 646 18
      14 200911:20091113_104901_s4h1B 43.7671 15 650 17
      15 200911:20091113_100901_s4h1B 44.1906 20 653 16
      16 200911:20091113_092901_s4h1B 42.9738 25 656 15
      17 200911:20091113_084901_s4h1B 34.7810 29 659 14
      18 200911:20091113_080901_s4h1B 33.6499 35 663 13
    • Dimitry Chestnov
      Hi Alan, I cannot see both objects reported by you. Your pixel coordinate system is strange for me. Please explain your report format. But I see two objects on
      Message 2 of 10 , Nov 16, 2009
        Hi Alan,

        I cannot see both objects reported by you. Your pixel coordinate system is strange for me. Please explain your report format.

        But I see two objects on 20091113_120901_s4h1B.fts at coordinates 6,382 and 76,386 (0,0 upper left).

        Please also explain how to do flat-field calibration for STEREO images.


        --- In stereohunter@yahoogroups.com, "alan" <awat4309@...> wrote:
        >
        > This has been reported to Mr Sungrazer already.
        > A very bright comet is moving top left quater.
        > Unknown , non group. rgds Alan Watson
        > (0,0) up left image pix value x y slice.
        > 1 200911:20091113_000901_s4h1B 56.4040 23 416 1
        > 2 200911:20091113_004901_s4h1B 53.1977 26 416 2
        > 3 200911:20091113_012901_s4h1B 53.1628 29 418 3
        > 4 200911:20091113_020901_s4h1B 60.1462 32 420 4
        > 5 200911:20091113_024901_s4h1B 61.0561 35 421 5
        > 6 200911:20091113_032901_s4h1B 62.2929 38 422 6
        > 7 200911:20091113_040901_s4h1B 57.5182 41 423 7
        > 8 200911:20091113_044901_s4h1B 47.0123 43 424 8
        > 9 200911:20091113_052901_s4h1B 42.8668 46 425 9
        > 10 200911:20091113_060901_s4h1B 46.1428 49 427 10
        > 11 200911:20091113_064901_s4h1B 53.2620 52 428 11
        >
        > Known kruetz is here.
        > 12 200911:20091113_120901_s4h1B 47.6176 4 642 19
        > 13 200911:20091113_112901_s4h1B 36.8600 9 646 18
        > 14 200911:20091113_104901_s4h1B 43.7671 15 650 17
        > 15 200911:20091113_100901_s4h1B 44.1906 20 653 16
        > 16 200911:20091113_092901_s4h1B 42.9738 25 656 15
        > 17 200911:20091113_084901_s4h1B 34.7810 29 659 14
        > 18 200911:20091113_080901_s4h1B 33.6499 35 663 13
        >
      • Alan Watson
        Gidday Dimitry, Please find attached a plot for the two comets seen ionn HI1b for 20091113
        Message 3 of 10 , Nov 16, 2009
        Gidday Dimitry,
        Please find attached a plot for the two comets seen ionn  HI1b for 20091113
         
        < Please also explain how to do flat-field calibration for STEREO images.
        I use Imagej software too procees these images using a macro that works now for all STEREO imager types.
        They same procees is good for COR2, H2 and H1. Imagej is always (0,0) upleft , and i use the 1024x1024 images.
         
        From  the FITs daily sequence, you need to create an Min image frame.
        This is then subracted from all images in  the sequence.
        the sequence is math sqrt to even out the values.
        the brightness and contrast can then be adjusted.
         
        As HI1b moves around a lot. you can use a shorter(10 images) sequence if the solar flare is too great.
         
        Here is the macro with some extras on it.
        If you save you images in a comon directory structure like this,
            E:\\stereo\lz\L0\a\img\hi_1\200911
        the macro will find images from this image store.
         
        ============= Cut here ==========================
        // aaa-archv-stk.txt
          title = "20090317_";
         
        //
        //  Filepathz = "E:\\stereo\\lz\\L0\\";
        //
          Dialog.create("Make Imager Sequence");
        //
          Dialog.addMessage("Select a Satellite and Imager");
          Dialog.addChoice("STEREO Sat:", newArray("a", "b"));
          Dialog.addChoice("Imager:", newArray("hi_1", "hi_2", "Cor_2"));
          Dialog.addMessage("Example Date entry\n200903 - all frmes for March 2009, only use  for HI_2 imager\n2009032 - last ten days fo March 09\n2009030 - First ten days of march 09\n20090331 - one day sequence in march 09");
          Dialog.addString("Sequence:", title);
         
          Dialog.show();
          sat = Dialog.getChoice();
          type = Dialog.getChoice();
          title = Dialog.getString();
          dir = substring(title, 0, 6);
        //
        //  print(Filepathz+type+"\\"+dir+" "+type+" "+title);
        //
        run("Image Sequence...", "open=E:\\stereo\\lz\\L0\\"+sat+"\\img\\"+type+"\\"+dir+"\\20090318_064901_s4h1B.fts number=400 starting=1 increment=1 scale=100 file="+title+" or=[] sort");
        //
        run("Z Project...", "start=1 stop=400 projection=[Min Intensity]");
        //
        selectWindow("MIN_"+dir);
        run("Multiply...", "value=0.999");
        //
        imageCalculator("Subtract stack", ""+dir+"","MIN_"+dir);
        //run("Image Calculator...", "image1="+dir+" operation=Subtract image2=MIN_"+dir+" stack");
        selectWindow("MIN_"+dir);
        close();
        //
        selectWindow(""+dir);
        run("Square Root", "stack");
        run("Brightness/Contrast...");
        run("Enhance Contrast", "saturated=0.5");
        run("Enhance Contrast", "saturated=0.5");
        //
        ============== cut here =========================
         
         
        You should be albe to adapt this to other software. just remove the dialogue bit at the front.
        Kind regards, Alan.
         
         
      • karlbattams
        Alan and all, The unknown non-group comet has been confirmed by Brian Marsden... confirmed to be 169P/NEAT! Sorry Alan! It does seem to be much brighter
        Message 4 of 10 , Nov 16, 2009
          Alan and all,

          The "unknown" non-group comet has been confirmed by Brian Marsden... confirmed to be 169P/NEAT! Sorry Alan!

          It does seem to be much brighter than expected, but there's no doubt that's what it is. It's very close to the STEREO-B spacecraft -- only 0.39AU on Nov12-13.

          Regards,
          ~~Karl

          --- In stereohunter@yahoogroups.com, "Alan Watson" <awat4309@...> wrote:
          >
          > Gidday Dimitry,
          > Please find attached a plot for the two comets seen ionn HI1b for 20091113
          >
          > < Please also explain how to do flat-field calibration for STEREO images.
          > I use Imagej software too procees these images using a macro that works now for all STEREO imager types.
          > They same procees is good for COR2, H2 and H1. Imagej is always (0,0) upleft , and i use the 1024x1024 images.
          >
          > From the FITs daily sequence, you need to create an Min image frame.
          > This is then subracted from all images in the sequence.
          > the sequence is math sqrt to even out the values.
          > the brightness and contrast can then be adjusted.
          >
          > As HI1b moves around a lot. you can use a shorter(10 images) sequence if the solar flare is too great.
          >
          > Here is the macro with some extras on it.
          > If you save you images in a comon directory structure like this,
          > E:\\stereo\lz\L0\a\img\hi_1\200911
          > the macro will find images from this image store.
          >
          > ============= Cut here ==========================
          > // aaa-archv-stk.txt
          > title = "20090317_";
          >
          > //
          > // Filepathz = "E:\\stereo\\lz\\L0\\";
          > //
          > Dialog.create("Make Imager Sequence");
          > //
          > Dialog.addMessage("Select a Satellite and Imager");
          > Dialog.addChoice("STEREO Sat:", newArray("a", "b"));
          > Dialog.addChoice("Imager:", newArray("hi_1", "hi_2", "Cor_2"));
          > Dialog.addMessage("Example Date entry\n200903 - all frmes for March 2009, only use for HI_2 imager\n2009032 - last ten days fo March 09\n2009030 - First ten days of march 09\n20090331 - one day sequence in march 09");
          > Dialog.addString("Sequence:", title);
          >
          > Dialog.show();
          > sat = Dialog.getChoice();
          > type = Dialog.getChoice();
          > title = Dialog.getString();
          > dir = substring(title, 0, 6);
          > //
          > // print(Filepathz+type+"\\"+dir+" "+type+" "+title);
          > //
          > run("Image Sequence...", "open=E:\\stereo\\lz\\L0\\"+sat+"\\img\\"+type+"\\"+dir+"\\20090318_064901_s4h1B.fts number=400 starting=1 increment=1 scale=100 file="+title+" or=[] sort");
          > //
          > run("Z Project...", "start=1 stop=400 projection=[Min Intensity]");
          > //
          > selectWindow("MIN_"+dir);
          > run("Multiply...", "value=0.999");
          > //
          > imageCalculator("Subtract stack", ""+dir+"","MIN_"+dir);
          > //run("Image Calculator...", "image1="+dir+" operation=Subtract image2=MIN_"+dir+" stack");
          > selectWindow("MIN_"+dir);
          > close();
          > //
          > selectWindow(""+dir);
          > run("Square Root", "stack");
          > run("Brightness/Contrast...");
          > run("Enhance Contrast", "saturated=0.5");
          > run("Enhance Contrast", "saturated=0.5");
          > //
          >
          > ============== cut here =========================
          >
          >
          > You should be albe to adapt this to other software. just remove the dialogue bit at the front.
          > Kind regards, Alan.
          >
        • Matson, Robert D.
          Explains why it hasn t been visible in C3 -- it would be way out of the field of view to the left... --Rob ... From: stereohunter@yahoogroups.com
          Message 5 of 10 , Nov 16, 2009
            Explains why it hasn't been visible in C3 -- it would be way out of the
            field of view to the left... --Rob

            -----Original Message-----
            From: stereohunter@yahoogroups.com [mailto:stereohunter@yahoogroups.com]
            On Behalf Of karlbattams
            Sent: Monday, November 16, 2009 5:41 PM
            To: stereohunter@yahoogroups.com
            Subject: [stereohunter] Re: Comet in HI1B - Unkown non-group

            Alan and all,

            The "unknown" non-group comet has been confirmed by Brian Marsden...
            confirmed to be 169P/NEAT! Sorry Alan!

            It does seem to be much brighter than expected, but there's no doubt
            that's what it is. It's very close to the STEREO-B spacecraft -- only
            0.39AU on Nov12-13.

            Regards,
            ~~Karl
          • Alan Watson
            Gidday Karl, Thanks for the follow up, (awe... shucks). Yes , My Starry night settings agree with this now, they were a day out. What were the odds of a good
            Message 6 of 10 , Nov 16, 2009
              Gidday Karl,
              Thanks for the follow up, (awe... shucks).
              Yes , My Starry night settings agree with this now, they were a day out.
              What were the odds of a good comet on my birthday?
               
              Thanks , and sorry for the fun.
              kind regards, Alan.
               
               
              ----- Original Message -----
              Sent: Tuesday, November 17, 2009 12:40 PM
              Subject: [stereohunter] Re: Comet in HI1B - Unkown non-group

               

              Alan and all,

              The "unknown" non-group comet has been confirmed by Brian Marsden... confirmed to be 169P/NEAT! Sorry Alan!

              It does seem to be much brighter than expected, but there's no doubt that's what it is. It's very close to the STEREO-B spacecraft -- only 0.39AU on Nov12-13.

              Regards,
              ~~Karl

              --- In stereohunter@ yahoogroups. com, "Alan Watson" <awat4309@.. .> wrote:
              >
              > Gidday Dimitry,
              > Please find attached a plot for the two comets seen ionn HI1b for 20091113
              >
              > < Please also explain how to do flat-field calibration for STEREO images.
              > I use Imagej software too procees these images using a macro that works now for all STEREO imager types.
              > They same procees is good for COR2, H2 and H1. Imagej is always (0,0) upleft , and i use the 1024x1024 images.
              >
              > From the FITs daily sequence, you need to create an Min image frame.
              > This is then subracted from all images in the sequence.
              > the sequence is math sqrt to even out the values.
              > the brightness and contrast can then be adjusted.
              >
              > As HI1b moves around a lot. you can use a shorter(10 images) sequence if the solar flare is too great.
              >
              > Here is the macro with some extras on it.
              > If you save you images in a comon directory structure like this,
              > E:\\stereo\lz\ L0\a\img\ hi_1\200911
              > the macro will find images from this image store.
              >
              > ============ = Cut here ============ ========= =====
              > // aaa-archv-stk. txt
              > title = "20090317_";
              >
              > //
              > // Filepathz = "E:\\stereo\ \lz\\L0\\ ";
              > //
              > Dialog.create( "Make Imager Sequence");
              > //
              > Dialog.addMessage( "Select a Satellite and Imager");
              > Dialog.addChoice( "STEREO Sat:", newArray("a" , "b"));
              > Dialog.addChoice( "Imager:" , newArray("hi_ 1", "hi_2", "Cor_2"));
              > Dialog.addMessage( "Example Date entry\n200903 - all frmes for March 2009, only use for HI_2 imager\n2009032 - last ten days fo March 09\n2009030 - First ten days of march 09\n20090331 - one day sequence in march 09");
              > Dialog.addString( "Sequence: ", title);
              >
              > Dialog.show( );
              > sat = Dialog.getChoice( );
              > type = Dialog.getChoice( );
              > title = Dialog.getString( );
              > dir = substring(title, 0, 6);
              > //
              > // print(Filepathz+ type+"\\" +dir+" "+type+" "+title);
              > //
              > run("Image Sequence..." , "open=E:\\stereo\ \lz\\L0\\ "+sat+"\\ img\\"+type+ "\\"+dir+ "\\20090318_ 064901_s4h1B. fts number=400 starting=1 increment=1 scale=100 file="+title+ " or=[] sort");
              > //
              > run("Z Project...", "start=1 stop=400 projection=[ Min Intensity]") ;
              > //
              > selectWindow( "MIN_"+dir) ;
              > run("Multiply. ..", "value=0.999" );
              > //
              > imageCalculator( "Subtract stack", ""+dir+"","MIN_ "+dir);
              > //run("Image Calculator.. .", "image1="+dir+ " operation=Subtract image2=MIN_" +dir+" stack");
              > selectWindow( "MIN_"+dir) ;
              > close();
              > //
              > selectWindow( ""+dir);
              > run("Square Root", "stack");
              > run("Brightness/ Contrast. ..");
              > run("Enhance Contrast", "saturated=0. 5");
              > run("Enhance Contrast", "saturated=0. 5");
              > //
              >
              > ============ == cut here ============ ========= ====
              >
              >
              > You should be albe to adapt this to other software. just remove the dialogue bit at the front.
              > Kind regards, Alan.
              >

            • Dimitry Chestnov
              ... The brightness of 169P is in agreement with Seiichi Yoshida s prediction: http://www.aerith.net/comet/catalog/0169P/2009.html
              Message 7 of 10 , Nov 16, 2009
                > It does seem to be much brighter than expected

                The brightness of 169P is in agreement with Seiichi Yoshida's prediction:
                http://www.aerith.net/comet/catalog/0169P/2009.html
              • Juan José González Suárez
                Karl, Robert, Dimitry, The comet is significantly brighter than expected. Here is my recent visual estimate from dark mountain skies: 169P/NEAT: 2009 Nov.
                Message 8 of 10 , Nov 18, 2009
                  Karl, Robert, Dimitry,

                  The comet is significantly brighter than expected. Here is my recent
                  visual estimate from dark mountain skies:

                  169P/NEAT:
                  2009 Nov. 18.77 UT: m1=9.2, Dia.=4', DC=2/, 20 cm SCT (100x).
                  [ Elongated wide coma with faint outer region. End of astronomical
                  twilight. Altitude: 9 deg ].

                  Best regards,

                  J. J. Gonzalez


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


                  Robert Matson wrote:

                  > Explains why it hasn't been visible in C3 -- it would be way out of the
                  > field of view to the left... --Rob
                  >
                  > -----Original Message-----
                  > From: stereohunter@yahoogroups.com [mailto:stereohunter@yahoogroups.com]
                  > On Behalf Of karlbattams
                  > Sent: Monday, November 16, 2009 5:41 PM
                  > To: stereohunter@yahoogroups.com
                  > Subject: [stereohunter] Re: Comet in HI1B - Unkown non-group
                  >
                  > Alan and all,
                  >
                  > The "unknown" non-group comet has been confirmed by Brian Marsden...
                  > confirmed to be 169P/NEAT! Sorry Alan!
                  >
                  > It does seem to be much brighter than expected, but there's no doubt
                  > that's what it is. It's very close to the STEREO-B spacecraft -- only
                  > 0.39AU on Nov12-13.
                  >
                  > Regards,
                  > ~~Karl
                  >
                  ---------------------------------------------------------

                  Dimitry Chestnov wrote:
                  > The brightness of 169P is in agreement with Seiichi Yoshida's prediction:
                  > http://www.aerith.net/comet/catalog/0169P/2009.html
                  >
                  >
                • Karl Battams
                  J.J., Many thanks for the report. I was beginning to think that the brightness I reported to Brian in HI1-B was due entirely to forward scattering. This
                  Message 9 of 10 , Nov 18, 2009
                    J.J.,

                    Many thanks for the report.  I was beginning to think that the brightness I reported to Brian in HI1-B was due entirely to forward scattering.  This seemed to be backed up by the fact that 169P *appears* to be fading in HI1-B as it moves to increasing apparent elongation.  But if anything, I'd say you are seeing it brighter than we are in STEREO now.  (Admittedly we only have data up to the 15/16th thus far.)  Definitely an interesting one to follow!

                    Regards,
                    ~~Karl

                    2009/11/18 Juan José González Suárez <jjgonzalez@...>
                     

                    Karl, Robert, Dimitry,

                    The comet is significantly brighter than expected. Here is my recent
                    visual estimate from dark mountain skies:

                    169P/NEAT:
                    2009 Nov. 18.77 UT: m1=9.2, Dia.=4', DC=2/, 20 cm SCT (100x).
                    [ Elongated wide coma with faint outer region. End of astronomical
                    twilight. Altitude: 9 deg ].

                    Best regards,

                    J. J. Gonzalez

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

                    Robert Matson wrote:

                    > Explains why it hasn't been visible in C3 -- it would be way out of the
                    > field of view to the left... --Rob
                    >
                    > -----Original Message-----
                    > From: stereohunter@yahoogroups.com [mailto:stereohunter@yahoogroups.com]
                    > On Behalf Of karlbattams
                    > Sent: Monday, November 16, 2009 5:41 PM
                    > To: stereohunter@yahoogroups.com
                    > Subject: [stereohunter] Re: Comet in HI1B - Unkown non-group
                    >
                    > Alan and all,
                    >
                    > The "unknown" non-group comet has been confirmed by Brian Marsden...
                    > confirmed to be 169P/NEAT! Sorry Alan!
                    >
                    > It does seem to be much brighter than expected, but there's no doubt
                    > that's what it is. It's very close to the STEREO-B spacecraft -- only
                    > 0.39AU on Nov12-13.
                    >
                    > Regards,
                    > ~~Karl
                    >
                    ---------------------------------------------------------

                    Dimitry Chestnov wrote:
                    > The brightness of 169P is in agreement with Seiichi Yoshida's prediction:
                    > http://www.aerith.net/comet/catalog/0169P/2009.html
                    >
                    >


                  • Juan José González Suárez
                    Karl, I ve observed 169P in the previous aparition ( under similar circumstances ) in the morning twilight: - 2005 Sep. 14.19 UT: m1=10.3, Dia.=3 , DC=2/ , 20
                    Message 10 of 10 , Nov 18, 2009
                      Karl,

                      I've observed 169P in the previous aparition ( under similar
                      circumstances ) in the morning twilight:

                      - 2005 Sep. 14.19 UT: m1=10.3, Dia.=3', DC=2/ , 20 cm SCT (100x).
                      [ Mountain location, very clear sky. Zodiacal light. Altitude: 12 deg. ].

                      Today I've seen the comet clearly brighter ... I agree: definitely an
                      interesting one to follow!

                      J. J. Gonzalez

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

                      Karl Battams wrote:

                      > J.J.,
                      >
                      > Many thanks for the report. I was beginning to think that the
                      > brightness I reported to Brian in HI1-B was due entirely to forward
                      > scattering. This seemed to be backed up by the fact that 169P
                      > *appears* to be fading in HI1-B as it moves to increasing apparent
                      > elongation. But if anything, I'd say you are seeing it brighter than
                      > we are in STEREO now. (Admittedly we only have data up to the 15/16th
                      > thus far.) Definitely an interesting one to follow!
                      >
                      > Regards,
                      > ~~Karl
                      >
                      > 2009/11/18 Juan José González Suárez <jjgonzalez@...
                      > <mailto:jjgonzalez@...>>
                      >
                      >
                      >
                      > Karl, Robert, Dimitry,
                      >
                      > The comet is significantly brighter than expected. Here is my recent
                      > visual estimate from dark mountain skies:
                      >
                      > 169P/NEAT:
                      > 2009 Nov. 18.77 UT: m1=9.2, Dia.=4', DC=2/, 20 cm SCT (100x).
                      > [ Elongated wide coma with faint outer region. End of astronomical
                      > twilight. Altitude: 9 deg ].
                      >
                      > Best regards,
                      >
                      > J. J. Gonzalez
                      >
                      >
                    Your message has been successfully submitted and would be delivered to recipients shortly.