Advances in Astronomy / 2010 / Article / Tab 2

Research Article

A Path to the Stars: The Evolution of the Species

Table 2

A comparison between the two available foci, Nasmyth and Cassegrain.

NasmythCassegrain

M3 between M1 and M2No M3 and mountings between M1 and M2
Higher moments of inertiaM1 & Instrs’ reduced moments of inertia
Only two (probably one) derotationRequired a further derotation
Mass (El stru. Instr.): 69823 KgMass (El stru. Instr.) M: 60127 Kg

Elevation Izz: 174000  (Az)Elevation Izz: 128000  (Az)
Ixx: 229000  (Alt)Ixx: 161000   (Alt)

Elevation Izz: 258000   (Az)Elevation Izz: 160000   (Az)
Ixx: 229000   (Alt)Ixx: 161000   (Alt)

Unbalance Factor (Az ): 1,48Unbalance Factor Izz ( / ): 1,25

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