Proposal #185

Proposer	(37929) Peter Bealo (pbealo@comcast.net) obscode: BPEC
Assigned To	(3663) Dirk Terrell
Date Submitted	Jan. 22, 2021
Status	Allocated
Priority	Normal
Proposal	Name: Peter Bealo Code: BPEC Observation Use: Follow up observations of recently classified UXOR variable. Suggested by M Kenworthy, Univ. of Leiden and E. Mamajek, NASA JPL Use of Data: Submit to AAVSO Database after VPhot analysis I request that images be sent to VPhot Target Star: ASASSN-V J170615.23-322944.7 in SCO Magnitude Range: 12. – 13.5 mag Comp Stars: from X26038AIA chart – 104, 129, 139, 125 I'll deal with these in VPhot NOTE: Comp/Check stars are 10’ – 20’ from variable, consider this when assigning to telescopes please! 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

Targets

Target Name	RA (H.HH)	Dec (D.DD)	Magnitude	Observation Frequency	Expiration Date	Proprietary Term
ASASSN-V J170615.23-322944.7 in SCO	17.104231	-32.49575	12.0–13.5	—	Aug. 4, 2021	No

Comments

(3663) Dirk Terrell — Jan. 27, 2021, 4:07 p.m.

Comments from Arne:
"The field is a bit crowded, so plenty of nearby comp stars but unknown if there might be a close companion or two. At -32, this is a tough field for northern telescopes, but doable. It is too faint, and the field is too crowded, for the current Australian BSMs - this situation will improve when they start using the E180's. I think Peter should ask the Sequence Team for comp stars closer to the target so that other telescopes, such as OC61, can be used. I'd also like at least a deep snapshot from TMO61 or OC61 to look for close companions, to help in understanding the amplitude of any variation in the target."

(37929) Peter Bealo — Feb. 1, 2021, 7:57 p.m.

I was wondering if this would be a problem. I'll ping the sequence team as soon as I figure out how! I saw it somewhere on the site in the past, just hadn't done so yet.
Peter

(2108) Arne Henden — Feb. 2, 2021, 11:31 a.m.

If you go to
https://app.aavso.org/vsp/
under the Variable Star Plotter banner is a link to "request a sequence"

(37929) Peter Bealo — Feb. 2, 2021, 2:04 p.m.

Wow, quick work on developing a sequence. Looks great. A couple stars may be problematical due to close companions, but several don't have that possible issue.

(4726) Kenneth Menzies — Feb. 5, 2021, 6:25 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,
Peter

Comments on this proposal are closed.

No images were sent as part of proposal AAVSO_P185_BPEC_AUTO, 2021-01-22 to 2026-07-20