Tag Archives: hastings

How Did Hastings Design Our Objective?

by John Church PART I I’ve often wondered what actual methods Charles Hastings used when designing the 6-1/4” objective now sitting at the business end of our fine refractor in Washington Crossing State Park.  I’ll start by quoting Hastings’ own … Continue reading

Posted in February 2021, Sidereal Times | Tagged , , | Leave a comment

Update on the Hastings-Byrne Refractor

by John Church At the December AAAP meeting, Gene Ramsey, Dave and Jen Skitt, and the writer reported their progress on a plan to upgrade the refractor mount to make it more usable for both club members and the general … Continue reading

Posted in January 2015, Sidereal Times | Tagged , , , , | Leave a comment

History of the Hastings-Byrne 6-1/4 Inch Refractor

by John Church As many current AAAP members may not be fully acquainted with the story of our fine 6-1/4 inch refractor, this history is presented so that the club may make an informed decision about its future use. Also … Continue reading

Posted in November 2014, Sidereal Times | Tagged , , , , | Leave a comment

Geometrical Optics and the Hastings-Byrne Refractor

By John Church Some years ago I analyzed the objective lens of the AAAP’s historic 6-1/4-inch Hastings-Byrne (H-B) refractor and published the results in Sky & Telescope magazine, along with a history of the telescope1. The readers of Sidereal Times … Continue reading

Posted in March 2012, Sidereal Times | Tagged , , , | Leave a comment