Exactly how close Chang'e-2 came to Toutatis is still unclear. The article states that the first reports “placed the flyby range at 3.2 km, which was astonishingly—even recklessly—tight. Passing within a few kilometers of an asteroid only 2 to 3 km in diameter at a speed of 10 730 meters per second could be described as either superb shooting or a near disaster.” If the Chinese spacecraft did pass that near, it could provide a “scientific bonanza” with data about the asteroid’s mass and composition.
On the other hand, if you meant every email Mann sent in the past 10 years, go jump in a lake. We don't even get president's personal correspondence and notes until after they die! Why should it be any different for scientists?
- What you are mounting on the equatorial mount? Is it a telescope or a camera? How big of a telescope?
- What are you trying to photograph
If you are trying to photograph deep sky objects through a mid sized telescope, I don't think you will find a mount in your budget range, unless you can get one used off of ebay or some such. The tabletop equatorial mount might be appropriate if you're just doing the sky. However, for a telescope, just the motors for a good equatorial drive will set you back $100 or more....
If you are only trying to photograph planets or the moon, you won't need any tracking ability to get spectacular photographs.
Though very light in atomic weight, lithium is less common in the solar system than 25 of the first 32 chemical elements.
The lack of lithium in the universe is one of the great unsolved mysteries in astronomy.
Who knows what this "rebranding" will do for that section of the store....
A better idea, which is currently being researched, and was suggested four years ago (at least the earliest I recall it being mentioned) was using x-ray pulsars, which require much smaller collecting area. See for example this thesis on the subject.
Link to Original Source
The collision involved an Iridium commercial satellite, which was launched in 1997, and a Russian satellite launched in 1993 and believed to be nonfunctioning. Each satellite weighed well over 1,000 pounds.
This is the fifth spacecraft/satellite collision to occur in space, but the other four were all fairly minor by comparison.