AAVSO International Database

August 17, 2020

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- High Energy Network (HEN): https://www.aavso.org/observations-blazar-s5-180378-critically-needed

August 14, 2020

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Campaigns and Observing Reports: https://www.aavso.org/five-t-tau-stars-XMM-campaign
- Young Stellar Objects: https://www.aavso.org/five-t-tau-stars-XMM-campaign-0

August 13, 2020

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Time Sensitive Alerts: https://www.aavso.org/tcp-j001142976611190-galactic-classical-fe-ii-nova-13-mag-cassiopeia-0
- Novae: https://www.aavso.org/tcp-j001142976611190-galactic-classical-fe-ii-nova-13-mag-cassiopeia

Note: Additional HST observations may be scheduled, so please continue obtaining 2-3 V snapshots per week. When a decision is made about any further HST observations (and consequent cadence changes), that information will be communicated via the forum threads for this campaign. Please be sure to subscribe to stay informed! - Elizabeth O. Waagen, 1 October 2020

Note: The HST observations of TCP-J21040470+4631129 have been scheduled for

Sep 12, 2020 07:16:37 to 13:07:28 UT

Note: The table of Observations submitted to the AAVSO was replaced to correct errors in this table in the original version of the Alert Notice.  -  Elizabeth O. Waagen, 3 August 2020

August 3, 2020

July 17, 2020

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Time Sensitive Alerts: https://www.aavso.org/pnv-j17580848-3005376-possible-nova-10-mag-sagittarius
- Novae: https://www.aavso.org/pnv-j17580848-3005376-nova-sgr-2020-no-3

Note: Nova Ret 2020 has been assigned the GCVS name YZ Ret.  -  Elizabeth O. Waagen, 11 August 2020

July 16, 2020

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Time Sensitive Alerts: https://www.aavso.org/mgab-v207-mag-53-likely-nova-eruption-reticulum-1
- Novae: https://www.aavso.org/mgab-v207-mag-53-likely-nova-eruption-reticulum-0
- Cataclysmic Variables: https://www.aavso.org/mgab-v207-mag-53-likely-nova-eruption-reticulum

Note: This campaign has been concluded as of 28 October 2020, BUT a new campaign from the SAME ASTRONOMER requesting coverage of the SAME TARGET is announced in AAVSO Alert Notice 723.  -  Elizabeth O. Waagen, 28 October 2020

July 14, 2020

Bands in optical data in the AAVSO International Database (AID)

Each variable star observation in the AID contains a field that specifies the band (filter) used in making the observation.

For data downloaded from the AID using the data-download tool, the band is given as an abbreviation (e.g., visual is Vis, Johnson V is V).

In special cases, the band (e.g. visual) may be represented as a number (e.g., 0). The following numbers represents the following bands:

July 2, 2020

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
- Time Sensitive Alerts: https://www.aavso.org/2020nvb-possible-supernova-131-mag-ngc-4457
- Cataclysmic Variables: https://www.aavso.org/sn-2020nvb-ngc-4457

Observers are encouraged to participate in the AAVSO forums listed above for this event, and to visit the AAVSO CV Section webpage.