Affiliation
American Association of Variable Star Observers (AAVSO)
Wed, 10/19/2022 - 22:02
AAVSO Alert Notice 796 announces an observing campaign on 12 dwarf novae over the coming 12 months in support of HST observations; the first target is scheduled for late October. Please see the notice for details and observing instructions.
There are threads for this campaign under the following AAVSO forums:
- Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023
- Cataclysmic Variables: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023-01
Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!
Many thanks, and Good observing,
Elizabeth O. Waagen, AAVSO HQ
Below is the timetable for the 12 dwarf novae being observed with HST (see Alert Notice 796). This table will be updated as each target is scheduled and after the HST observations have taken place.
Targets: October 2022 – September 2023
Scheduled for/Completed
October 2022October 28Nov 17 17:32:14 UT - Nov18 00:50:55 UT completed
November 2022December 22-23 2022 completed
January 2023April 2023July 2023September 2023Charts with comparison stars for the targets may be created using the AAVSO Variable Star Plotter (VSP). Please use WebObs to submit observations to the AAVSO International Database (AID).
Many thanks, and Good observing,
Elizabeth
If you are making charts for very faint targets (e.g., an 'F' or 'G' scale chart for ZTF18acxhphf), you will see that the dots for the faintest comp stars do not show. This problem has to do with VSP and is not able to be fixed at the present.
As a work-around, please choose the DSS chart option in VSP when creating the chart, which will show the actual sky and should enable you to identify the comp stars. Many thanks, and our apologies for the inconvenience.
Good observing,
Elizabeth
Dear All,
The observations of ZTF18acxhphf have been scheduled between
Nov 17, 2022 17:32:14 - Nov 18, 2022 00:50:55 (UT time)
Thanks for the data you have been obtained so far, it looks like the target is in quiescence and hopefully will remain like that in the next few days.
Any data you can collect tonight and tomorrow night is going to be very helpful to assess the safety of the target for the HST detector.
Instead, V479 And has been postponed to December. The HST team will do their best to observe both V479 And and CH UMa in December.
Good luck with your observations :)
All the best,
Anna
AAVSO Alert Notice 799 reports on the scheduling of ZTF18acxhphf with HST for 2022 November 17-18. Please see the notice for exact time, details, and instructions.
There are threads for this campaign under the following AAVSO forums:
- Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023
- Cataclysmic Variables: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023-01
Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!
Many thanks, and Good observing,
Elizabeth O. Waagen, AAVSO HQ
AAVSO Alert Notice 805 reports on the scheduling of V479 And with HST for 2022 December 22-23. Please see the notice for exact time, details, and instructions.
There are threads for this campaign under the following AAVSO forums:
- Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023
- Cataclysmic Variables: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023-01
Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!
Many thanks, and Good observing,
Elizabeth O. Waagen, AAVSO HQ
AAVSO Alert Notice 810 reports on the scheduling of ASASSN-18dg with HST on 2023 February 10-11 and of SDSS-J080449.49+161624.8 on February 16. Please see the notice for exact time, details, and instructions.
There are threads for this campaign under the following AAVSO forums:
- Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023
- Cataclysmic Variables: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023-01
Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!
Many thanks, and Good observing,
Elizabeth O. Waagen, AAVSO HQ
Alert Notice 818 reports on the exact times of HST observations on 2023 March 24 of the cataclysmic variable SSS 100511:061754-362655. Please see the notice for details and observing instructions.
There are threads for this campaign under the following AAVSO forums:
- Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023
- Cataclysmic Variables: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023-01
Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!
Many thanks, and Good observing,
Elizabeth O. Waagen, AAVSO HQ
AAVSO Alert Notice 823 announces an observing campaign beginning immediately on the cataclysmic variables SDSS J161909.10+135145.5 (Her) and GP Com in support of HST observations. Please see the notice for details and observing instructions.
There are threads for this campaign under the following AAVSO forums:
- Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023
- Cataclysmic Variables: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023-01
Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!
Many thanks, and Good observing,
Elizabeth O. Waagen, AAVSO HQ
AAVSO Alert Notice 825 reports on the scheduling of GP Com with HST for 2023 May 25-26 UT. Please see the notice for exact time, details, and instructions.
There are threads for this campaign under the following AAVSO forums:
- Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023
- Cataclysmic Variables: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023-01
Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!
Many thanks, and Good observing,
Elizabeth O. Waagen, AAVSO HQ
AAVSO Alert Notice 827 reports on the scheduling of HP Lib with HST for 2023 June 23 UT. Please see the notice for exact time, details, and instructions.
There are threads for this campaign under the following AAVSO forums:
- Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023
- Cataclysmic Variables: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023-01
Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!
Many thanks, and Good observing,
Elizabeth O. Waagen, AAVSO HQ
AAVSO Alert Notice 831 reports on the scheduling of V1082 Sgr with HST on 2023 August 11. Please see the notice for exact time, details, and instructions.
There are threads for this campaign under the following AAVSO forums:
- Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023
- Cataclysmic Variables: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023-01
Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!
Many thanks, and Good observing,
Elizabeth O. Waagen, AAVSO HQ
AAVSO Alert Notice 833 reports on LL Lyr likely to be being observed with HST later in September or in October. Please see the notice for details and instructions.
There are threads for this campaign under the following AAVSO forums:
- Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023
- Cataclysmic Variables: https://www.aavso.org/hst-campaign-dwarf-novae-2022-2023-01
Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!
Many thanks, and Good observing,
Elizabeth O. Waagen, AAVSO HQ