Astronomer Ralf Vandebergh set out to record images of some historic spacecraft in Earth orbit -- captured with his own modest equipment and a hand-guided, 10-inch, Newtonian reflecting telescope.

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Inspired to make his own contribution, astronomer Ralf Vandebergh set out to record images of some historic spacecraft in Earth orbit -- captured with his own modest equipment and a hand-guided, 10-inch, Newtonian reflecting telescope.

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A novel submicron particle agglomeration technique was developed to control the emission of submicron particle.The submicron particles were agglomerated by an agglomerant solution which was sprayed into the inlet of electrostatic precipitator, thus, the agglomerated submicron particles could be captured by the dust collecting equipment.

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