2009/04/13
Reflection Entry #2
I tried to see the moon four times the past week and I was successful in the half of my tries. The moon was very round and visible, we say “full”. I was taking photos and I realized that, from a photographer’s point of view, it is very difficult to capture the texture of the moon in night. Yes, I have a few nice examples from Norway, but they were taken during the summer 2008 far up north, meaning that the sun was present on the sky to. Thus, I did not have to work with relatively long exposures back then. The long exposure leads to lit surroundings; the moon, however, becomes one shiny object on the night sky. And these days, I did not encounter the moon being in the presence of the sun and so I was forced to take my tripod out. Even when I tried to capture HDR photos, I could not perfect my intentions since the moon was constantly moving. Those few minutes were always enough to clearly see that the moon’s trajectory was up towards the west and then north. I had to make a decision – either I could observe the path of the moon precisely, or I could observe the texture of the moon in high details. I chose to do the first. But still, I took photos of the texture too so I can refer to them later. It would have been a shame not to have documentation from the only full moon we could have seen during our month long project. I guess I will use that later.
My discoveries of the moon’s trajectory were a bit surprising. Once again, my knowledge about the sun made me to expect the moon behaving in a similar way. But while the sun has a constant point of rising and a point setting, the moon seems not to. From my window and so from a specific observation point, I noticed that one day the moon was at a certain time above the Axinn. But the next day, approximately at the same time (plus minus 5 min), the moon was more towards east on the night sky. I drew a few sketches and estimated the angle to be 15°. I shall continue observing the moon so that I can find out the exact angle of change: if the moon moves around the night sky one time and is on the same position (during a specific time) after “x”days, then the angle it has been changing is (360°/x)°.
To conclude, I am sure that the moon moves clockwise on the night sky in an arc (rising up, reaching its maximum point, and going down). By clockwise I mean the rotation through an imaginary horizontal north-south & east-west direction plane of an observer. Similarly, the point of rising moves anticlockwise (north, east, south, west, north, etc.) on such plane, defining a new point of moon setting each time. That is, with all respect to my previous knowledge, unexpectable. It seems that the empirical way of learning has its valid points – observation over the time reaching valid conclusions replaces assumptions that are made quickly and want to be (incorrectly called) conclusions.

