Secondary mirror prior to re-aluminizing at OAVdA

Secondary mirror prior to re-aluminizing at OAVdA
Secondary mirror prior to re-aluminizing at OAVdA The secondary mirror prior to re-aluminizing at The Astronomical Observatory of the Autonomous Region of the Aosta Valley (OAVdA). Corrosion of the aluminum layer is visible near the lower edge. Re-aluminizing made possible by a Planetary Society Shoemaker NEO Grant. The Astronomical Observatory of the Autonomous Region of the Aosta Valley / Albino Carbognani

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