Proposal #729

Proposer	(56069) Vivian Dai (vivianweidai@gmail.com) obscode: VDBA
Assigned To	Dirk Terrell
Date Submitted	Sept. 25, 2026
Status	Allocated
Priority	Normal
Proposal	Replaces Proposal 726, which we have asked AAVSO to close. #726 asked for SA-200 slitless spectra but was committed to bsm_nh2, a station we did not request, and every frame it delivered (filter GR) is undispersed: the stars are round point sources with no first-order spectrum, so no grating was in the beam. That was our mistake as well as the assignment's; we should have specified the requirement more plainly. WHAT WE ARE SEEKING: SPECTRA. One SA-200 slitless spectrum (dispersed frame) per target, for an H-alpha equivalent width of each star. Undispersed frames, even if labelled GR, cannot be used. SCOPE: a small test. 3 sessions in total, one short run per target, with 30 s, 60 s and 120 s exposures in the grating and no other filters. We will ask for more only after real spectra arrive. TELESCOPE: please assign this only to a telescope with a working SA-200 grating installed and enabled, such as BSM_Berry or BSM_NM. Please do NOT assign it to bsm_nh2, where the grating is not in the beam. If no such telescope is currently operating, please tell us in the comments rather than running the frames. Observer code VDBA.

Targets

Target Name	RA (H.HH)	Dec (D.DD)	Magnitude	Observation Frequency	Expiration Date	Proprietary Term
mu01 Sco	16.864500	-38.04750	3.3–2.7	1	Dec. 31, 2026	No
psi 2 Aqr	23.298400	-9.18250	4.7–4.1	1	Dec. 31, 2026	No
OS Pup	8.232900	-36.32230	5.4–4.8	1	Dec. 31, 2026	No

Plans currently in place

bsm_berry/AAVSO_P729_VDBA_AUTO.csv

# $Id: AAVSO_P729_VDBA_AUTO.csv 6062 2026-10-15 14:15:42Z MZK $,,,,,,,,,,,,,,,,,,,,,,,
#PROPOSAL=729,,,,,,,,,,,,,,,,,,,,,,,
#REQUESTER=VDBA,,vphot,,,,,,,,,,,,,,,,,,,,,
#AutoFocusAll= 0,,,,,,,,,,,,,,,,,,,,,,,
#target,hh,mm,ss.ss,dd,mm,ss.s,desc,priority,monitor,maxX,nrepeat,bin,[filter,exposure,nexp],[filter,exposure,nexp],[filter,exposure,nexp],,
#mu01_Sco,16,51,52.2,-38,2,51,mu01_Sco,50,1,2,1,1,GR,30,2,GR,60,2,GR,120,2,EarliestTime=2026-09-25T00:00:00,LatestTime=2026-12-31T00:00:00
#psi_2_Aqr,23,17,54.24,-9,10,57,psi_2_Aqr,50,1,2,1,1,GR,8.04,2,GR,60,2,GR,120,2,EarliestTime=2026-09-25T00:00:00,LatestTime=2026-12-31T00:00:00
#OS_Pup,8,13,58.44,-36,19,20.28,OS_Pup,50,1,2,1,1,GR,8.04,2,GR,60,2,GR,120,2,EarliestTime=2026-09-25T00:00:00,LatestTime=2026-12-31T00:00:00
HD_61950,7,36,19.26,-69,3,23.55,HD_61950,100,0,2,1,1,GR,300,10,EarliestTime=2026-09-25T00:00:00,LatestTime=2026-10-31T00:00:00,,,,,,

Comments

Dirk Terrell — Sept. 25, 2026, 5:04 p.m.: Canceled at user request. Keeping #726.
Kenneth Menzies — Sept. 26, 2026, 8:56 p.m.: Allocated to Berry per private discussion.

Comments on this proposal are closed.