Day 22 Cassiopeia and Tycho
Wednesday, March 5, 2014 at 8:31AM At 6 a.m. I imaged Cassiopeia over La Pilica using my Sony Alpha 350 DSLR. The image was taken on a tripod for 22s. (Manual - finger on button!) The data is shown below.
From the image I produced a star chart of Cassiopeia by converting to monochrome and then obtaining the negative.
Tyoho spotted a supernova in 1572 in Cassiopeia - here is his sketch
and his comments:
On the 11th day of November in the evening after sunset, I was contemplating the stars in a clear sky. I noticed that a new and unusual star, surpassing the other stars in brilliancy, was shining almost directly above my head; and since I had, from boyhood, known all the stars of the heavens perfectly, it was quite evident to me that there had never been any star in that place of the sky, even the smallest, to say nothing of a star so conspicuous and bright as this. I was so astonished of this sight that I was not ashamed to doubt the trustworthyness of my own eyes. But when I observed that others, on having the place pointed out to them, could see that there was really a star there, I had no further doubts. A miracle indeed, one that has never been prevoiously seen before our time, in any age since the beginning of the world.