Welcome Friends and Participants,

This database contains all resolution reports on file for the Sissy Haas project, "Finding the Limit for Uneven Double Stars."  The project began in September 2012 and is now entering its fifth year.  As of September 18, 2016, ninety-two observers have logged 2,392 observations of fifty-four target stars, using fifty-five different apertures.  If you would like to become a contributing observer, please register by contacting:  Sissy Haas.

News;

Update No. 107 completed 2016:09:18:14:45 UT.  Twenty-nine reports were filed on sixteen targets.  See the Recent Entries page.

We now have a Summary page.  This important addition reduces the data collected over the past four years and more importantly, indicates which targets still require attention.  The Community Page continues to be revised to list the names of all observers contributing to this project.  Search your name.  If there has been an error, omission or you wish to add information, (location, apertures, etc.), please contact Bill.

Clear Skies,  ∼ Bill Boublitz  生

Navigating the Database:

  1. Master Table  – Displays the target stars with separation in arc seconds along the y axis, and magnitude difference (ΔM) along the x axis.  Each star name in the table is an active link.  Clicking on the star name will display a list of all resolution reports on file for that pair, by aperture.
  2. Recent Entries  – Highlights the latest resolution reports added to the Database.  We update the database every two weeks.
  3. Data For The Test Pairs  – Lists coordinates and supporting data necessary for locating and observing the Test Pairs.  Standard Atlas Map Pages and SAO Numbers are included.
  4. WDS Reference  – These tables list data on the test pairs extracted from the Washington Double Star Catalog.  The targets are listed in order of Right Ascension.
  5. Summary  This is a new page which displays the probable minimum aperture need for each test pair, based on data reduction of the last four years of observations.  It also indicates which pairs require more observations.
  6. Community  – A list of our participants, location, equipment and respective Astronomical Societies.