AAVSO: American Association of Variable Star Observers

Proposal #239

Proposer (34732) Filipp Romanov (romanov_philipp@mail.ru) obscode: RFDA
Assigned To(3663) Dirk Terrell
Date SubmittedDec. 1, 2021
StatusAllocated
PriorityNormal
Proposal

Hello!

The results based on observations from previous proposal #184 were used in the publication of paper in the JAAVSO: https://app.aavso.org/jaavso/article/3695/

Proposal #225 was never implemented, but I was able to observe this target with a remote telescope of Abbey Ridge Observatory, my results should appear in future paper.

Now I ask for OC61 observations of TU Men in possible long-sought superoutburst (such a chance may be only once in 40 years), source of information: VSNET-Alert 26473 http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-alert/26473 Time-resolved photometry (best with exposures of 60 seconds) for next 2 weeks required: with V filter with a duration as many hours as possible every night.

I will upload the data to the AAVSO International Database and will send to VSNET. I think it will be a good results for the publication of the paper in a journal.

With best regards, Filipp.

Targets
Target RA (H.HH) Dec (D.DD) Magnitude Telescope Observation Frequency Expiration Date Proprietary Term
TU Men 4.694444 -76.61250 18.5–11.6 OC61 1 June 2, 2022 No

Comments

(34732) Filipp Romanov — Dec. 1, 2021, 3:11 p.m.

For some reason, the coordinates were again converted incorrectly.

Correct position (J2000.0):
04 41 40.71 -76 36 45.9
(70.41961 -76.61276)

(3663) Dirk Terrell — Dec. 3, 2021, 4:55 a.m.

The TAC doesn't want to dedicate all night, every night to this, as other projects need to be done as well. A workable amount of observing time needed to achieve the science goals should be suggested by the proposer.

(34732) Filipp Romanov — Dec. 3, 2021, 5:17 a.m.

I understand everything, I wrote approximately possible range 2 weeks because it is not yet known if there are superhumps.

For now, I propose to try for 3 hours one night and see if there are superhumps, so that the process of further imaging is clear. If the superhumps will be recorded, then it will be necessary to shoot them in detail for many hours every night, and if not, then continue to shoot for 2-3 hours every nearest night for monitoring.

(4726) Kenneth Menzies — Dec. 3, 2021, 2:55 p.m.

I will set up a plan for one night but I do not think we can/should commit to running it as often as you desire. Effectively, this becomes your scope!

Ken

(34732) Filipp Romanov — Dec. 3, 2021, 4:20 p.m.

Dear Kenneth, I see that the weather forecast will be partly cloudy for OC61 now. I also see that according to the weather forecast on the night of December 7/8, it will be clear, so let's schedule many hours of shooting for this night in advance: just during this time, other observers will report whether superhumps are observed (I will promptly keep you informed on this matter). If they do not report, then 2 hours of imaging will be enough for monitoring. I also do not want to occupy the telescope all night alone, just if there are superhumps (there is a possibility of this), then one should not miss such a unique opportunity to shoot at least a few nights.

(4726) Kenneth Menzies — Dec. 4, 2021, 3:53 p.m.

I looked at recent AAVSO light curve. TU Men is currently in normal outburst at mag 12.5 and slowly declining per mags from HMB. Therefore. not sure what this plan will accomplish as written? Lot's of wasted imaging time!

Daily monitoring of a few images would determine when superoutburst actually starts, whenever it does. That is what I have done. Josch (HMB) is also looking for the next superoutburst to start.

Ken

(4726) Kenneth Menzies — Dec. 4, 2021, 3:57 p.m.

Committed to OC61 and Berry. Two images per night until superoutburst is observed. It is not currently in superoutburst.

Comments on this proposal are closed.