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Comet in H2a - C/2007 W1 (Boattini)

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  • algwat
    I think this is W1 Boattini. rgds Alan. h2a:20080508_180921_s4h2A 42 717 9 86.458 h2a:20080509_080921_s4h2A 49 717 16 81.474 h2a:20080511_220921_s4h2A 82 717
    Message 1 of 10 , May 14, 2008
      I think this is W1 Boattini. rgds Alan.
      h2a:20080508_180921_s4h2A 42 717 9 86.458
      h2a:20080509_080921_s4h2A 49 717 16 81.474
      h2a:20080511_220921_s4h2A 82 717 47 95.854
    • colindrescher
      Good work Alan, 2007 W1 it is. Should look good in the coming weeks as it brightens in the H2A field. Regards, Colin
      Message 2 of 10 , May 14, 2008
        Good work Alan, 2007 W1 it is.
        Should look good in the coming weeks as it brightens in the H2A field.

        Regards,
        Colin



        --- In stereohunter@yahoogroups.com, "algwat" <awat4309@...> wrote:
        >
        > I think this is W1 Boattini. rgds Alan.
        > h2a:20080508_180921_s4h2A 42 717 9 86.458
        > h2a:20080509_080921_s4h2A 49 717 16 81.474
        > h2a:20080511_220921_s4h2A 82 717 47 95.854
        >
      • Vegas Luna
        Hello all .. I am looking for these h2a images and cannot find them. Could someone point me in the right direction to locate these please?? I used to get raw
        Message 3 of 10 , May 14, 2008
          Hello all ..

          I am looking for these h2a images and cannot find them. Could someone
          point me in the right direction to locate these please?? I used to get
          raw fts images from the stereo website but i no longer find those
          either. thanks ..


          --- In stereohunter@yahoogroups.com, "algwat" <awat4309@...> wrote:
          >
          > I think this is W1 Boattini. rgds Alan.
          > h2a:20080508_180921_s4h2A 42 717 9 86.458
          > h2a:20080509_080921_s4h2A 49 717 16 81.474
          > h2a:20080511_220921_s4h2A 82 717 47 95.854
          >
        • karlbattams
          ... A bit of self-promotion here but the best place to find SECCHI images is the SECCHI website! http://secchi.nrl.navy.mil/ Click on the Images link at
          Message 4 of 10 , May 14, 2008
            --- In stereohunter@yahoogroups.com, "Vegas Luna" <vegas_luna@...> wrote:
            >
            > Hello all ..
            >
            > I am looking for these h2a images and cannot find them. Could someone
            > point me in the right direction to locate these please?? I used to get
            > raw fts images from the stereo website but i no longer find those
            > either. thanks ..
            >
            >

            A bit of self-promotion here but the best place to find SECCHI images
            is the SECCHI website! http://secchi.nrl.navy.mil/ Click on the
            "Images" link at the top or the "Image Gallery" link on the left.
            There are also javascript movie tools and othe fun stuff there (and
            you can get the raw fits files from the database)

            Regards,
            ~~Karl
          • Vegas Luna
            Thank you!! That is exactly what I was looking for. I was at a different website so now I know what was wrong. Thanks again ..
            Message 5 of 10 , May 14, 2008
              Thank you!! That is exactly what I was looking for. I was at a
              different website so now I know what was wrong. Thanks again ..


              --- In stereohunter@yahoogroups.com, "karlbattams" <karlbattams@...>
              wrote:
              >
              > --- In stereohunter@yahoogroups.com, "Vegas Luna" <vegas_luna@> wrote:
              > >
              > > Hello all ..
              > >
              > > I am looking for these h2a images and cannot find them. Could someone
              > > point me in the right direction to locate these please?? I used to get
              > > raw fts images from the stereo website but i no longer find those
              > > either. thanks ..
              > >
              > >
              >
              > A bit of self-promotion here but the best place to find SECCHI images
              > is the SECCHI website! http://secchi.nrl.navy.mil/ Click on the
              > "Images" link at the top or the "Image Gallery" link on the left.
              > There are also javascript movie tools and othe fun stuff there (and
              > you can get the raw fits files from the database)
              >
              > Regards,
              > ~~Karl
              >
            • Ian Musgrave & Peta O'Donohue
              G Day Folks ... Umm, I see it too, but shouldn t Boattini be heading in the OTHER direction. (ie this object is going in the same direction as Mars and Saturn,
              Message 6 of 10 , May 17, 2008
                G'Day Folks

                At 10:30 PM 14/05/2008, you wrote:
                >Good work Alan, 2007 W1 it is.
                >Should look good in the coming weeks as it brightens in the H2A field.
                >
                >Regards,
                >Colin
                >--- In stereohunter@yahoogroups.com, "algwat" <awat4309@...> wrote:
                > >
                > > I think this is W1 Boattini. rgds Alan.
                > > h2a:20080508_180921_s4h2A 42 717 9 86.458
                > > h2a:20080509_080921_s4h2A 49 717 16 81.474
                > > h2a:20080511_220921_s4h2A 82 717 47 95.854

                Umm, I see it too, but shouldn't Boattini be heading in the OTHER
                direction. (ie this object is going in the same direction as Mars and
                Saturn, (Saturn goes through the Beehive cluster as well), Boattini
                should be heading in the opposite direction, faster (at least
                accodring to my SkyMap epemeris). Could it be 2006 Q1 McNaught?
                (which goes in the same direction as Mars and Saturn, and is clsoe by
                Boattini).

                Cheers! Ian

                ======================================================
                Ian Musgrave Peta O'Donohue, Jack Francis, Michael James and Andrew
                Thomas Musgrave
                reynella@... http://home.mira.net/~reynella/
                Southern Sky Watch http://www.abc.net.au/science/space/default.htm
                (scroll down right hand menu)
                AstroBlogg http://astroblogger.blogspot.com/
                Contributing Editor, Sky & Space
                http://www.skyandspace.com.au/public/home.ehtml
              • rainerkracht
                ... field. ... and ... by ... Hi, no doubt, this is C/2007 W1 Boattini! JPL horizons has 20080511_220921 RA 10h 33.5m Decl -05d 38 for the comet. And there it
                Message 7 of 10 , May 17, 2008
                  --- In stereohunter@yahoogroups.com, Ian Musgrave & Peta O'Donohue
                  <reynella@...> wrote:
                  >
                  > G'Day Folks
                  >
                  > At 10:30 PM 14/05/2008, you wrote:
                  > >Good work Alan, 2007 W1 it is.
                  > >Should look good in the coming weeks as it brightens in the H2A
                  field.
                  > >
                  > >Regards,
                  > >Colin
                  > >--- In stereohunter@yahoogroups.com, "algwat" <awat4309@> wrote:
                  > > >
                  > > > I think this is W1 Boattini. rgds Alan.
                  > > > h2a:20080508_180921_s4h2A 42 717 9 86.458
                  > > > h2a:20080509_080921_s4h2A 49 717 16 81.474
                  > > > h2a:20080511_220921_s4h2A 82 717 47 95.854
                  >
                  > Umm, I see it too, but shouldn't Boattini be heading in the OTHER
                  > direction. (ie this object is going in the same direction as Mars
                  and
                  > Saturn, (Saturn goes through the Beehive cluster as well), Boattini
                  > should be heading in the opposite direction, faster (at least
                  > accodring to my SkyMap epemeris). Could it be 2006 Q1 McNaught?
                  > (which goes in the same direction as Mars and Saturn, and is clsoe
                  by
                  > Boattini).
                  >
                  > Cheers! Ian
                  >
                  Hi,

                  no doubt, this is C/2007 W1 Boattini!
                  JPL horizons has 20080511_220921 RA 10h 33.5m Decl -05d 38' for the
                  comet. And there it is, close to HD 91412 10h 33.2m -05d 22' (this is
                  the star just to the upper right of the comet).

                  Cheers, Rainer
                • Ian Musgrave & Peta O'Donohue
                  G Day All ... Yes, I should have plotted the HORIZONS ephemeris rather than the Earth-centric ephermeris first, Boattini does go in that direction, and
                  Message 8 of 10 , May 17, 2008
                    G'Day All

                    At 10:02 PM 17/05/2008, Rainer wrote:
                    >--- In stereohunter@yahoogroups.com, Ian Musgrave & Peta O'Donohue
                    >
                    > > Umm, I see it too, but shouldn't Boattini be heading in the OTHER
                    > > direction. (ie this object is going in the same direction as Mars
                    >
                    >Hi,
                    >
                    >no doubt, this is C/2007 W1 Boattini!
                    >JPL horizons has 20080511_220921 RA 10h 33.5m Decl -05d 38' for the
                    >comet. And there it is, close to HD 91412 10h 33.2m -05d 22' (this is
                    >the star just to the upper right of the comet).

                    Yes, I should have plotted the HORIZONS ephemeris rather than the
                    Earth-centric ephermeris first, Boattini does go in that direction,
                    and McNaught is off field.

                    Sheesh Ian, Think first THEN post.

                    Cheers! Ian

                    ======================================================
                    Ian Musgrave Peta O'Donohue, Jack Francis, Michael James and Andrew
                    Thomas Musgrave
                    reynella@... http://home.mira.net/~reynella/
                    Southern Sky Watch http://www.abc.net.au/science/space/default.htm
                    (scroll down right hand menu)
                    AstroBlogg http://astroblogger.blogspot.com/
                    Contributing Editor, Sky & Space
                    http://www.skyandspace.com.au/public/home.ehtml
                  • algwat
                    Gidday all, I had used Starry night to get the general alignment of this comet. It suggests that Boattini W1 will be low in FOV of H2a, and not in H1a. In Late
                    Message 9 of 10 , May 17, 2008
                      Gidday all,
                      I had used Starry night to get the general alignment of this comet.
                      It suggests that Boattini W1 will be low in FOV of H2a, and not in H1a.
                      In Late June to early July , using the Horizons orbit site, the comet
                      passes relatively close to STEREO-A. If a roll is programed to happen,
                      the comet might appear large on the H1A and H2A FOV. The comet would be
                      in H2B FOV but looking much as it is now I expect.

                      From the STEREO web site, current plans, this looks like the only
                      opportunity for more views.

                      SECCHI Stepped calibration rolls
                      Ahead: Jun 24,

                      Kind regards, Alan.
                    • algwat
                      Gidday All, In recent H2a images of 20080527, around 0600 to 1200. It looks like this comet has interacted with a Solar wind front passing by. A disconnect
                      Message 10 of 10 , May 30, 2008
                        Gidday All,

                        In recent H2a images of 20080527, around 0600 to 1200. It looks like
                        this comet has interacted with a Solar wind front passing by.
                        A disconnect event is just detectable when using differencing on the
                        image sequence.

                        Since the comet has no long tail, given its present location, what
                        would generate the material stream picked up by the moving wave front?

                        Ground based images from around this time would be interesting.

                        I'll post an avi sequence shortly.

                        Kind regards, Alan.
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