“its collecting area stupid..”

• Gemini 8-M 8 2 x 50

• CHARA 354 5.5

• Keck 1 & 2 + 165 157 + 11

• VLTI + 200 201 + 20

• 20 m 20 316

• 50-M Telescope 50 1963 Goal: 0.01 arcsecond images at 2.2 microns signal/noise gains ~ 30 compared to an 8m sensitivity gains ~ 103 over Gemini for point like sources

Facility Baseline Collecting Area

(m) (m2)

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