Tag Archives: church

The Cycle of Eclipses

by John Church Many of my fellow AAAP members will have heard of the “saros”: the 18 years, 11 and one-third day cycle when eclipses of the sun and moon recur with nearly the same circumstances. To be more precise, … Continue reading

Posted in October 2017, Sidereal Times | Tagged , , | Leave a comment

Oregon Trip

Pictures and Videos by AAAP Members and Friends Abhijit Singh, AAAP friend did an excellent job with Nikon Camera and Celestron Filter. John Church’s Cat with Ears Corona!! Images from Gerrit Dispersyn’s Camera. Click to enlarge Pictures from John Church’s … Continue reading

Posted in September 2017, Sidereal Times | Tagged , , | Leave a comment

The Solar Eclipse of August 21, 2017

by John Church As many club members are already aware, we have arranged for a prime viewing site in Oregon for this year’s total solar eclipse. Totality will last for slightly over 2 minutes, beginning shortly after 10 am PDT, … Continue reading

Posted in January 2017, Sidereal Times | Tagged , | 3 Comments

Telescope Longevity

by John Church Our historic 6¼-inch Hastings-Byrne refractor, with its objective lens dating from 1879, was ready for the morning of May 9th and the transit of Mercury. We comfortably followed and photographed the transit with a 55-mm Plossl eyepiece … Continue reading

Posted in June 2016, Sidereal Times | Tagged , | Leave a comment

Star Distances

by John Church At last November’s business meeting it was mentioned that on public nights at the observatory, team members are often asked how far away a particular star is. To help us answer these questions, I’ve generated a list … Continue reading

Posted in April 2016, Sidereal Times | Tagged , , | Leave a comment

Testing the Hastings-Byrne Refractor

by John Church Since some members had reported seeing a decline in the optical performance of the 6-1/4 inch Hastings-Byrne refractor, I conducted a thorough test of it on the night of April 18. Dave and Jen Skitt and Gene … Continue reading

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

In Memoriam: Tony Miskowski

by John Church Tony Miskowski, an active AAAP member from the 70’s and 80’s, passed away on February 22nd. Tony was one of the chief builders of our observatory in Washington Crossing State Park in the late 70’s. He had a … Continue reading

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