Special Notice #64: FN Sgr AND VZ Sgr
September 7, 2007
SYMBIOTIC VARIABLE 1848-19 FN SGR ACTIVE
symbiotic variable
Special Notice #112: Support for CH Cygni observations with HST and Chandra
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June 7, 2008
Special Notice #121: Outburst of the symbiotic star CI Cygni
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August 31, 2008
Special Notice #152: Increased activity in the symbiotic star AX Persei
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AAVSO Special Notice #152
Increas
Special Notice #168: Outburst of the symbiotic star Z Andromedae
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AAVSO Special Notice #168
Outburs
Alert Notice 171: 2252-36 SN 1993L in IC 5270 AND Request to monitor SS Cyg and AD Leo for ASCA mission AND VY Aqr outburst AND BZ UMa outburst AND Supernova 1993J in NGC 3031 AND Nova Oph 1993 [V2295 Oph] AND 1809-00 FG Ser (AS 296) (Desig revised)
THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
BITNET: aavso@cfa8 SPAN: nssdca::cfa8::aavso
INTERNET: aavso@cfa0.harvard.edu
Tel. 617-354-0484 FAX 617-354-0665
AAVSO ALERT NOTICE 171 (May 5,1993)
2252-36 SN 1993L in IC 5270
Alert Notice 167: The symbiotic star 1810-00 FG Serpentis (AS 296) AND Forthcoming outburst of 0749+22 U Geminorum
THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
BITNET: aavso@cfa8 SPAN: nssdca::cfa8::aavso
INTERNET: aavso@cfa0.harvard.edu
Tel. 617-354-0484 FAX 617-354-0665
AAVSO ALERT NOTICE 167 (February 1, 1993)
THE SYMBIOTIC STAR 1810-00 FG SERPENTIS (AS 296)
Special Notice #429: V694 Mon (MWC 560) spectroscopy requested
May 2, 2017: Further to AAVSO Alert Notice 538, the campaign from 2016 on V694 Mon (MWC 560) has been continued, but with different requirements. Photometry is no longer specifically requested on a regular basis (although ongoing observations that do not interfere with other obligations are welcome). Spectroscopy on a cadence of a week or two is requested to monitor changes in the disk outflow. V694 Mon is presently nearing opposition, but the request for spectroscopy continues until further notice.
Alert Notice 572: AG Dra monitoring requested
April 3, 2017: Dr. Rudolf Gális (Pavel Jozef Šafárik University (Slovakia)) and colleagues have requested AAVSO assistance in observing the symbiotic variable AG Dra. Observations are requested as a follow-up to spectroscopic observations and in order to monitor the system for an anticipated outburst.
Special Notice #417: CH Cygni B and V photometry urgently requested
REQUEST CONTINUED THROUGH 2018
June 3, 2016: Dr. Margarita Karovska (Harvard-Smithosonian Center for Astrophysics) is urgently requesting B and V photometry of the symbiotic variable CH Cyg from now until at least the end of August. Observations made twice a week are sufficient; time series observations are not needed. Spectroscopy would also be very welcome and appreciated.