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R Cygni

By Rich Roberts

The AAVSO Sequence Team has been working hard for many years updating and improving charts and comparison star sequences. This page contains a list of the most recent updates as well as an archive of all the updates from the past and when they were made.

If you observe any of these objects please update your charts and photometry tables as necessary with the most recent version as soon as possible. Many of the lists are also available for download in CSV, XLSX, and PDF format.

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)

Note: This campaign has been rescheduled. Please see AAVSO Alert Notice 714 for information.  -  Elizabeth O. Waagen, August 6, 2020

February 24, 2020

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
 - Time Sensitive Alerts: https://www.aavso.org/tcp-j18104219-1534184-new-transient-121-mag-serpens
 - Novae: https://www.aavso.org/tcp-j18104219-1534184-nova-ser-2020

Event: Nova in Serpens: Nova Ser 2020 = N Ser 2020 = TCP J18104219-1534184  [V670 Ser]

Note:  Please continue observations at a cadence of 1 observation per week until further notice. - Elizabeth O. Waagen, July 6, 2021

Please continue observations at a cadence of 1 observation per week at least through 2021 June 15. See the post by Principal Investigator Dariusz Kubicki in the forum threads for this campaign (URLs below).  -  Elizabeth O. Waagen, 2020 June 29

The eclipse of EE Cep has occurred but continued monitoring is requested to establish post-eclipse behavior.  - Elizabeth O. Waagen, 2020 May 21

Note: The HST observations of V386 Ser will take place Friday, 2020 February 28. Positive observations are CRITICAL for the nights of Feb 26-27 and 27-28. Please report observations immediately. - Elizabeth O. Waagen, 2020 February 26

February 14, 2020

Note: Please see AAVSO Alert Notice 699 for updated HST schedule and observing instructions. - Elizabeth O. Waagen, February 14 2020.

February 7, 2020