Astro2018-05-19 17:34 entry-ref_118 2018-04-28 14:50 entry-ref_96
- apod link: https://apod.nasa.gov/apod/ap180426.html
Some recent research to barndoor tracking:
The Distance between the NCP (north celestial pole) and Polaris is approx. 0.7°.1
(Needed for polar alignment.)
(google search: “sehwinkel teleskop messen”)
Astronomy Picture of the Day
“Heute am Himmel”, redacted articles, astronomy calendar, calculator and a lot more (german)
objects to observe (german)
Yesterday evening I was looking out of the window, at about 22:45. I saw a bright light flying slowly from south to north. Must be an airplane, was my first thought. But no, it wasn’t blinking. Being too bright for a regular satellite, it might be the ISS1 then. I even tried to take a snapshot, but it passed too fast and disappeared behind the horizon.
Maybe it would reappear later and I could photograph it then, I thought. Knowing that the ISS takes roughly 90 minutes for one revolution around the earth, I knew I had some time to research and prepare.
So, I checked on calsky.com’s daily astronomy calendar2 and yes the ISS should be visible this night, even five times.