Lunar transit ... "first contact"

From: Anthony Ayiomamitis (
Date: Wed Jun 13 2001 - 19:17:56 PDT

  • Next message: Jonathan T Wojack: "Re: 01022A-Information please"

          A very well-derverved CONGRATS to Rob Matson and SKYMAP! I
    received a note from Rob earlier this week about a predicted lunar
    transit by one of the Cosmos rocket bodies for Thursday morning
    (04:46:13). As a reminder to all, we now have a third quarter moon and
    the glare is quite strong.
          Well, Rob's program was accurate down to the last second and the
    trajectory predicted by SKYMAP was also dead on. A double success by
    SKYMAP. The program had predicted a magnitude of +4.8 and this was also
    certainly reasonable.
           I first acquired the r/b about 20 degrees to the southeast of the
    moon visually and it was immediately obvious that this thing was headed
    for a lunar transit. So much so that I immediately grabbed my binoculars
    and forget to get back to the telescope I had setup. SKYMAP predicted a
    pass from the dark to the illuminated portions and this was indeed the
    case. I think (?) I was also able to follow the rocket body within the
    lunar glare after its passage across the lunar surface.
           This opens up a new approach to capturing lunar transits and
    something that I will follow up immediately. So far I have been pursuing
    satellites which are not illuminated so as to capture their silhouette
    against the brighter lunar surface. I will now concentrate on the
    reverse (such as tonight's illuminated pass) to get some first-hand
    experience regarding various aspects relating to photography. One of the
    first things that comes to mind is shooting a roll of 24-exp film using
    a power winder (at 7 fps) so as to generate an animated GIF.
    Unsubscribe from SeeSat-L by sending a message with 'unsubscribe'
    in the SUBJECT to

    This archive was generated by hypermail 2b29 : Wed Jun 13 2001 - 19:18:24 PDT