2003 年 5 月 21日的火星
相距 25 日，火星視直徑只增加了2.15 角秒，但感覺上已大了很多，8 月尾沖日時視直徑達 25.1 角秒，是現在的兩倍多，一定非常可觀！请问：照片中的火星直径是多少，左边的图来自什么软件？
非常好，将来把火星拍成一个系列。wld_76：上面写着：直径分别是9.05"和11.2"，软件的名字是Mars Previewer II
下载地址：
http://skyandtelescope.com/resources/software/programs/mp201.zip
Mars Previewer II
Leandro Rios, an amateur astronomer in Argentina, created this handy utility for Mars watchers. Rios based his freeware program — which displays the central meridian and angular size of the red planet for any date and time — on the algorithm used in MARS.BAS (in the S&T Basic Programs listings). The program is a 32-bit application (Windows 95 and higher).
After you download mp201.zip (3.0 megabytes), unzip it and run setup.exe to install the software. (To extract the files, use an uncompressing utility, such as Aladdin Expander).
When you run Mars Previewer, make sure you enter dates in DD/MM/YYYY format and set your time zone relative to Greenwich Mean Time (positive numbers to the west, negative to the east). If you have any questions about the program, you can contact Rios by e-mail at leandror@iname.net.
http://www.mindspring.com/~jeffpo/mp2.gif
多谢lymex.
以前下过这个，当时不知为何不能用。现在的这个可以用了。回复: 请问：照片中的火星直径是多少，左边的图来自什么软件？
最初由 wld_76 发表你可看看我上月的帖子
http://amateur.lamost.org/bootes/bbs/showthread.php?s=&threadid=11467
以下這張是中文版本。
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