Proposal #553

Proposer	(50438) Julian DelColle (jdelcolle2008@gmail.com) obscode: DJUF
Assigned To	(3663) Dirk Terrell
Date Submitted	Sept. 10, 2024
Status	Allocated
Priority	Normal
Proposal	Hello, I am interested in observing HDE 226868 for a school astronomy project. Every 5.6 days, it orbits behind Cygnus X1, a black hole. My end goal is to measure the mass of the black hole using the varying brightness. I would like 2-3 hours of 15-20 minute photos a night for 3-5 orbits(15-30 days). My preferred filters are B and V. I am inexperienced with photometry so if something seems unreasonable please inform me. Thank you for considering this proposal and I hope to hear from you soon. Kind Regards, Julian Del Colle(DJUF)

Target Name	RA (H.HH)	Dec (D.DD)	Magnitude	Observation Frequency	Expiration Date	Proprietary Term
HDE 226868	19.972689	35.20161	8.72–8.93	1	March 12, 2025	No

(50438) Julian DelColle — Sept. 12, 2024, 12:42 a.m.: In the VSX the star is referred to as V1357 Cyg, just in case you cant find HDE 226868
(3663) Dirk Terrell — Sept. 12, 2024, 10:10 p.m.: The TAC suggests 3x BV every couple of hours rather than a time series.
(50438) Julian DelColle — Sept. 13, 2024, 6:35 p.m.: That works for me.
(50438) Julian DelColle — Sept. 13, 2024, 6:38 p.m.: My preferred contact email is j.delcolle@share.epsb.ca, Please contact me here if necessary
(4726) Kenneth Menzies — Sept. 13, 2024, 9:37 p.m.: Committed to NH2
(50438) Julian DelColle — Oct. 7, 2024, 7:29 p.m.: How long can I expect until I get some photos, I need data to start formulating my project. is there an approximate date I can expect some photos to be sent to my VPhot account.
(50438) Julian DelColle — Oct. 20, 2024, 6:08 p.m.: Hi, just seeing if I can get an update on my question, I'm not sure what's going on but my teacher(Mr. Doktor) says i should have gotten photos by now. any updates would be appreaciated

Comments on this proposal are closed.