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spectroscopy

Alert Notice 703: TCP J21040470+4631129 images, photometry, and spectroscopy urgently requested - REVISED

Note: This Alert Notice was revised from its original text to correct a misinterpretation of the request from Dr. Echevarria, to update the recent observations, and to update the status of scheduled HST observations.  -  Elizabeth O. Waagen, 2 April 2020

April 2, 2020   (original issued April 1, 2020)

Alert Notice 700: EE Cep observing campaign 2020-2021

Note: The eclipse of EE Cep began earlier than predicted. Dariusz Kubicki reported on 2020 February 28 that "there is no doubt the eclipse has begun; my observations confirm" reports from observers. Please continue to monitor EE Cep as described below.  -  Elizabeth O. Waagen, 2020 March 2

February 24, 2020

Alert Notice 695: HST to observe V694 Mon (MWC 560)

Note: Observations of V694 Mon are scheduled for 11 March 2020 with HST, and for 22 March 2020 with XMM. Please continue to observe as indicated below but with the high-intensity coverage taking place March 9 through March 14 and March 19 through March 25.  -  Elizabeth O. Waagen, 6 March 2020

February 3, 2020

Alert Notice 692: V694 Mon (MWC 560) to be observed with Chandra

Note: Note: Observations of V694 Mon are scheduled for 11 March 2020 with HST, and for 22 March 2020 with XMM. Please continue to observe as indicated in Alert Notice 695 but with the high-intensity coverage taking place March 9 through March 14 and March 19 through March 25.  -  Elizabeth O. Waagen, 6 March 2020

Alert Notice 689: R Aqr monitoring needed in support of HST and Chandra observations

Note:  Continued observations in all bands (particularly B and V) and spectroscopy are extremely important. Please continue nightly observations until further notice.  -  Elizabeth O. Waagen, 31 January 2020

Note: The exact schedules for the Chandra and HST observations of R Aqr (Alert Notice 689) are as follow:

Chandra (UT)  Note that this date is EARLIER than given in Alert Notice 689.
12 Jan 2020 00:13:21.409 - 12 Jan 2020 14:06:41

Alert Notice 678: V694 Mon (MWC 560) photometry and spectroscopy requested

Note: V694 Mon (MWC 560) is scheduled to be observed with Chandra the week of 2020-January-27 - February-03 UT. Please see AAVSO Alert Notice 692 for more information.  -  Elizabeth O. Waagen, January 22, 2020

September 11, 2019

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