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  • The Messier Marathon community mourns the loss of Don Machholz (October 7, 1952 - August 9, 2022), co-inventor and record-breaking Messier Marathoner. Don Machholz commemorative site
  • Messier Marathoners: If not already done so, please contribute your results! (2024 or earlier)
  • Messier Marathon Holders: Please notify us of any scheduled events for the Messier Marathon 2024!
  • A.J. Crayon's Analysis of Messier Marathons, as of April 27, 2015 - A.J.'s First Analysis as of 2011
  • Messier Features

  • Supernovae in Messier Catalog Galaxies - Supernova 2023dbc in M108 and 2023ixf in M101

  • Perseverance Mars 2020 Rover and Ingenuity helicopter doing science on Mars surface
  • Observe Mars during its 2024-2025 apparition!
    Webmasters: Semi-recent updates for linking our pages
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    Spider's Homepage

    -- ... always under construction, but growing older and hopefully better as time goes by ... --

    Major Projects

    The Messier Pages at SEDS
  • Messier Marathon homepage

    Constellation Pages and Maps Pages Mirror at SEDS of Chris Kronberg's MAA

    Other pages and services

    NGC Online: Searchable index for the NGC 2000 catalog, with some features.

    Spider's HOT links (Astronomy, space, and other)

    A Guide to the Deepsky Astronomy Resources at SEDS

    Some hopefully useful lists:

    Some more informations:

    OS/2: Most of the stuff here is astronomy and space, but there's also a bit on IBM's OS/2:
  • Spider/2: My OS/2 info; OS/2 overview; Guide to Astronomical and Space-Related OS/2 Software; my PS/2 page

  • Other interesting stuff



    Some Arizona stuff
  • Nice Webpages for Lynx (Web hints)
  • Some Earthlings (animals) - Spiders in Space

  • Send me info on beautiful images of astronomical objects and space stuff (Messiers, above all) not yet on SEDS !
  • Some personal information

    If there is no response to your email for some time ..

    Note: Because of massive amounts of work pending, responses to any kind of correspondence may be significantly delayed (actually so significantly that I think this note is required - don't wonder or worry if it should take months in some cases). Nevertheless, your input is appreciated. Also, updates of these webpages are still in slow mode with a long queue of stuff waiting to be worked in; sorry for any inconveniences this may cause.
    © 1995 to current Spider (Hartmut Frommert) at SEDS

    ... but free for non-profit use ...

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