AAVSO Alert Notice 725 announces an observing campaign on 13 Northern T Tau stars beginning now. Please see the Notice for details and observing instructions.
There are threads for this campaign under the following forums:
- Campaigns and Observation Reports: https://www.aavso.org/northern-t-tau-stars-campaign
- Young Stellar Objects: https//www.aavso.org/northern-t-tau-stars-campaign-01
Please subscribe to these threads if you are participating in the campaign so you can be updated by the astronomer and by HQ. Join in the discussion or ask questions there! HST observations are planned for these objects and the dates of those observations will be posted in this forum (they will not be announced in new Alert Notices).
Many thanks, and Good observing,
Elizabeth O. Waagen, AAVSO HQ
Below is a status report provided by Dr. Walter on the 13 Northern T Tau stars in this campaign. Please note the HST times as well as the Notes that follow the table.
Thank you for your observations to date! Please remember that all of the targets, including those already observed by HST, need a few observations throughout the TESS window (see the Alert Notice for full instructions).
Many thanks, and good observing,
Elizabeth
updated: 3 December 2020; 7 December 2020
Table 1: Scheduled Northern Targets
HST observations completed
Not yet scheduled with HST
Notes
Western hemisphere observers are encouraged to observed these targets as follows:
TX Ori Nov 29: anytime, Dec 01 0:53 - 2:01 UT (Nov 30 civil). Dec 01: anytime.
V505 Ori Nov 29: anytime. Nov 30 20:07 - 00:13 and Dec 01 2:28 - 3:36 UT (Nov 30 civil). Dec 01: anytime.
CVSO-58 Nov 30: anytime. Dec 01 23:07 - Dec 02 0:14 UT (Dec 01 civil). Dec 02 anytime.
CVSO-36 Dec 02: anytime. Dec 03: anytime, Dec 04: anytime.
CVSO-107 Dec 03: anytime. Dec 05: 00:11-01:19 UT (Dec 04 civil). Dec 05 anytime.
CVSO-17 Dec 04: anytime. Dec 05: 23:00 - Dec 06 02:31 UT (Dec 05 civil). Dec 06: anytime.
V510 Ori Dec 06: anytime. Dec 07: anytime, Dec 08: anytime, Dec 09: anytime. CVSO-146 Dec 08: anytime. Dec 09: anytime, Dec 10: anytime.
Notes:
In the above, a date without a UT attached refers to the civil date at the start of the night for an observer in the western hemisphere.
The first few scheduled minutes of each observation are used for target acquisition, so it is better to start a few minutes after the start of the HST observations than right at the stated start time.
Remember also to obtain occasional images of all targets between Nov 19 and Dec 17, simultaneously with the TESS observations, to monitor the longer-duration color varia- tions. TESS will obtain broadband red (600-1000 nm) colors on a 10 minute cadence.