Showing posts with label October 1. Show all posts
Showing posts with label October 1. Show all posts

Wednesday, October 4, 2017

Polaris, Cassiopeia, and the Big Dipper

For this task, I had to draw Polaris, Cassiopeia, and the Big Dipper (part of Ursa Major), relative to each other and the horizon. Unfortunately, trees were blocking my full view of the Big Dipper, but I still had so much fun going out and figuring out what was where and drawing it all out. I think it's really cool that now I am able to recognize another constellation. Not sure if this is a weird way to feel, but I really like the constellation Cassiopeia and now I get excited each time I see it (not sure if that's because it was my first new constellation or if I actually love it). It also made me feel really good that I was able to accurately identify Vega even though I was in a different location than when I'd seen it before. I used my quadrant and compass to determine the locations of Polaris, Dubhe (the top right star of the bowl of the Big Dipper), and the center of the triangle of Cassiopeia. Their altitudes are (respectively): 30°, 13°, 40° (azimuths are labeled in the diagram). It's so relaxing and peaceful going out at night looking at the stars, learning and becoming confident with identifications. I hope that I will continue to look at constellations in the night sky, beyond the extent of this class, so that I will always be able to easily identify some of these great celestial sights.


Related Observations:
Polaris, Cassiopeia, and the Big Dipper Later in the Year  http://northstargazer.blogspot.com/2017/12/polaris-cassiopeia-and-big-dipper-later.html?m=1
Polaris, Cassiopeia, and the Big Dipper Later in the Night  http://northstargazer.blogspot.com/2017/12/polaris-cassiopeia-and-big-dipper-later_29.html?m=1


Monday, October 2, 2017

Altitude of Polaris


At 8:45 pm EDT on October 1, 2017, Polaris (the North Star) was 32° above the horizon.

this was calculated using the quadrant/astrolabe again (for the altitude; azimuth is measured with a compass), looking directly through the straw at the star, as opposed to looking at an image of the sun