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CH Cyg B and V photometry needed

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weo
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CH Cyg B and V photometry needed

AAVSO Special Notice #417 announces an urgent request for B and V photometry of the symbiotic variable CH Cyg from now through August. Please see the notice for details and instructions.

Many thanks, and good observing,

Elizabeth Waagen, AAVSO HQ

AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484