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Outburst of V404 Cyg

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weo
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Outburst of V404 Cyg

AAVSO Alert Notice 520 reports on the 2015 outburst of the X-ray nova and LMXB with black hole V404 Cyg. Please see the Alert Notice for observing recommendations.

Good observing,

Elizabeth Waagen, AAVSO HQ

weo
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HST to observe V404 Cyg

AAVSO Alert Notice 522 reports on the upcoming observations of V404 Cyg by HST. Please see the notice for details and observing instructions.

Good observing,

Elizabeth Waagen, AAVSO HQ

weo
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Correction to Alert Notice 522

AAVSO Alert Notice 523 reports an error in the date of detection of the V404 Cyg outburst by Swift. There are no corrections to the HST observations times or observing instructions.

Good observing,

Elizabeth Waagen, AAVSO HQ

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