lunar eclipse exposure

I am planning to shoot the eclipse on Oct. 27th with my 7” f9, prime focus on 35mm E-200. Does an exposure of 1/250th sound right? How much should I increase the exposure during total to get the orange color right?
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Hello Joseph, The perfect exposure for this eclipse with your set up should be about 2 to 4 seconds during totality. That's if this eclipse is similar in brightness to last Novembers' eclipse. I use a C8 with a reducer corrector and the same E200 slide film. Always bracket your exposure times a few seconds for best results. Good luck, Dave Sewell