While at my Mom's recently, I discovered that the desktop edition of Tirion's SkyAtlas is a slightly different scale than the bound edition. This meant that my acetate "rings" for our various eyepieces would not be calibrated correctly for the desktop editions. So I re-did the calculations and made a new sheet.
When I returned home, it occurred to me to also include some additional items. Like the Moon. And the Andromeda Galaxy. To scale, of course. And, since I had a lot of space left, I also threw in a "handy" reference of scales (e.g. width of one's fist at arm's length is approx. 10°).
No comments:
Post a Comment