AAVSO: American Association of Variable Star Observers

Proposal #186

Proposer (37929) Peter Bealo (pbealo@comcast.net) obscode: BPEC
Assigned To(3663) Dirk Terrell
Date SubmittedJan. 26, 2021

Name: Peter Bealo
Code: BPEC
Observation Use: Alert Notice 723. Suggested by M Kenworthy, Univ. of Leiden
Use of Data: Submit to AAVSO Database after VPhot analysis
I request that images be sent to VPhot
Target Star: ASASSN-V J181654.06-202117.6
Magnitude Range: 12. – 13.5 mag
Comp Stars: from X26053ANR chart – 111, 120, 129127 I'll deal with these in VPhot
Observation Cadence: Daily if time is available
Filters Required: B, V, R, I
Number of Exposures per Run: 3X per filter
Exposure Times: Site Owner's Best Guess initially, will review following 1st observing run
Start Date: Mar 1, 2020
End Date: TBD

Target RA (H.HH) Dec (D.DD) Magnitude Telescope Observation Frequency Expiration Date Proprietary Term
ASASSN-V J181654.06-202117.6 18.281683 -20.35486 14.2–12.3 BSM_Berry Aug. 4, 2021 No


(4726) Kenneth Menzies — Feb. 5, 2021, 6:26 p.m.

Committed to Berry and OC61.

(37929) Peter Bealo — March 28, 2021, 10:02 p.m.

The individual images from Berry2 of ASASSN-V J170615.23-322944.7 and ASASSN-V J181654.06-202117.6 are really nice, and I see no need for as many images as in the plan for binning. I have no idea how "booked up" that system is, but I think I can return about 30 min per observing night to use for whatever else may be in queue without affecting the quality of the data I report out.

Both variables use the same exposure series: qty 5 B 180 sec exposures, qty 3 V 120 sec, qty 3 R 120 sec and qty 3 I 120 sec images.

I'd be comfortable backing down to Qty 2 B 180 sec, qty 2 V 120 sec, qty 2 R 120 sec and qty 2 I 120 sec images.

If you think this is a good idea I'll make that note on the 185 and 186 proposal forms by Monday.
All the Best,

Comments on this proposal are closed.