July 21, 2021
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Further to AAVSO Alert Notice 741, Dr. Fred Walter (Stony Brook University) informs us that the HST observations of two targets that had been put on hold have now been re-scheduled.
The observations will take place tonight and tomorrow:
- NSV 20468 (Sz 130): 22 Jul 2021 13:17:02 - 22 Jul 2021 21:32:41 UT
- STc2dJ 160000.6-422158: 23 Jul 2021 04:28:52 - 23 Jul 2021 16:19:45 UT
CCD filtered photometry (BVRI, V in particular) is requested now through July 22 (NSV 20468=Sz 130) or July 23 (SSTC2DJ160000.6-422158).
| Name | RA (2000.0) | Dec (2000.0) | Range (from VSX) | Mean V (not midpoint) |
|---|---|---|---|---|
| NSV 20468 (= Sz 130) [Lup] | 16 00 31.04 | -41 43 37.0 | 13.9 - 15.1 V | 14.7 |
| SSTc2d J160000.6-422158 [Nor] | 16 00 00.60 | -42 21 56.8 | 16.4 - 16.7 V | 15.9 |
Finder charts: Finder charts with comparison stars for the targets may be created using the AAVSO Variable Star Plotter (VSP).
Please submit observations to the AAVSO International Database using the names given in the table above.
This AAVSO Alert Notice was compiled by Elizabeth O. Waagen.
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SUBMIT OBSERVATIONS TO THE AAVSO
Information on submitting observations to the AAVSO may be found at:
- Photometry/visual observations: https://www.aavso.org/webobs
- Spectroscopy: https://www.aavso.org/apps/avspec/
ALERT NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION
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https://www.aavso.org/aavso-alert-notices-for-observing-campaigns-and-discoveries
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