Proposal #223

In support of Alert 750 and upcoming HST(8/26) and XMM-Newton measurements (Aug/Sept), propose nightly photometry of T CrB over next 6 weeks (prior to XMM-Newton schedule which is TBD) . Provide V,B(priority), I filter transformed photometry to AAVSO database.

Observer: RBCA
Data photometry: VPHOT
Results: Upload to AAVSO database
Target: T CrB
Mag: 9 - 10.8 (prior to eruption in estimated 5 years)
Filters + (exposure time): B(60sec), V(30 sec), I (20 sec)
Number of exposures per filter: 16
Images to be stacked, photometry performed, transformed using comp + check star
Start date: Aug 16th, 2021
End date: Sept 30th, 2021

Once HST, XMM- Newton observations are completed, project would continue at a 3 - 5 day cadence.

Proposal submitted by: Brian Ramey
Observer Code: RBCA
8/10/2021