Preparing the sky with Vol. 2 and 3 Pub. 249.
From: Guus Dekker
Date: 2017 Sep 24, 11:09 -0700
How can I best prepare the sky with other stars then the selected stars in Vol. 1 (Pub. 249) [marked with a "diamond"] to get a good intersection of position lines ?
Regards, Guus Dekker, Belgium.