AAVSO: American Association of Variable Star Observers

Proposal #322

Proposer (19034) Dave Hinzel (daveeta1@cox.net) obscode: HDHA
Assigned To(3663) Dirk Terrell
Date SubmittedMarch 18, 2023

High Mass X-Ray Binary (HMXB) RX J0520.5-6932 has not been recently observed. I would like to begin observing as soon as possible and ending June 1, 2023. Please schedule imaging 2-3 times a week with the following parameters:

Johnson-Cousins VBRI photometry: V band 60 seconds; B band 60 seconds; R band 60 seconds; I band 60 seconds. Magnitude range 13-15 in all bands.
Thank you.
Dave Hinzel

Target RA (H.HH) Dec (D.DD) Magnitude Telescope Observation Frequency Expiration Date Proprietary Term
RX J0520.5-6932 5.341625 -69.53214 15.0–13.0 OC61 1 July 30, 2023 No


(3663) Dirk Terrell — March 20, 2023, 5:30 p.m.

Dave, can you provide some justification for this project? Is it in support of some campaign?

(19034) Dave Hinzel — March 24, 2023, 4:43 p.m.


I'm new to AAVSOnet. My goal is to learn how to use this capability for future observations. Eventually, I would like to learn spectroscopy since I know very little about that topic. I'm the section co-lead for the High Energy Network and want to focus on high energy objects, hence the HMXBs. Also, these objects have known spectra, so I can compare my results with what is known as a reference point.

As you can see, I've submitted other proposals but have yet to get any photometry that I can use. I'm hoping this proposal is successful.

(4726) Kenneth Menzies — March 27, 2023, 7:18 p.m.

Dave: As I suspect you know, this target is faint enough that it is best done with a large scope (FSM). It is also far south, so that means OC61. I will put it there and image every clear night. I will also run through July. I don't think your short total duration will really give you enough info? It will also set soon?


(4726) Kenneth Menzies — March 27, 2023, 7:30 p.m.

Committed to OC61

Comments on this proposal are closed.