Gentlemen: I am finding that your predefined exposures of 10, 20, and 30 seconds limiting. At 10 seconds, I get quite a few image rejections due to star trails. This of course depends upon the altitude of the target. Please consider a manual option whereby the user can set his own exposure. Here is a table you may find useful. If I have misrepresented the limitations of exposure settings, sorry and point me in the proper direction!
