Proposal #730

Proposer	(43518) W. Allen Gilchrist (gilchrist.allen@ymail.com) obscode: GWAA
Assigned To	Dirk Terrell
Date Submitted	Sept. 28, 2026
Status	Allocated
Priority	Normal
Proposal	LR Psc is listed in VSX as a HADS pulsating variable tar with a period of 0.0627 d (90.4 min) and a range of variability of 11.22 to 11.53 V. There are 5277 V, CV, TC, and SG observations in the AAVSO database, but no B, Rc, or Ic. Observations. There are also some TESS data from sector 70. Three or four time series observation runs of two hours each with B. V, and either Rc or Ic filters could provide the basis for a relatively detailed study of this star with a possible publication. W Allen Gilchrist, Jr., PhD. GWAA

Targets

Target Name	RA (H.HH)	Dec (D.DD)	Magnitude	Observation Frequency	Expiration Date	Proprietary Term
LR Psc	1.105097	8.77042	11.53–11.52	0	Dec. 31, 2026	No

Plans currently in place

bsm_berry/AAVSO_P730_GWAA_AUTO.csv

# $Id: AAVSO_P730_GWAA_AUTO.csv 6038 2026-10-06 18:26:48Z MZK $
#PROPOSAL=730
#REQUESTER=GWAA,,vphot
#AutoFocusAll= 0
#target,hh,mm,ss.ss,dd,mm,ss.s,desc,priority,monitor,maxX,nrepeat,bin,[filter,exposure,nexp]
LR_Psc,1,6,18.35,8,46,13.5,LR_Psc,75,1,2,60,1,B,60,1,V,30,1,I,30,1,BestEfforts=1,EarliestTime=2026-09-28T00:00:00,LatestTime=2026-12-31T00:00:00

bsm_nh2/AAVSO_P730_GWAA_AUTO.csv

# $Id: AAVSO_P730_GWAA_AUTO.csv 6037 2026-10-06 18:24:24Z MZK $
#PROPOSAL=730
#REQUESTER=GWAA,,vphot
#AutoFocusAll= 0
#target,hh,mm,ss.ss,dd,mm,ss.s,desc,priority,monitor,maxX,nrepeat,bin,[filter,exposure,nexp]
LR_Psc,1,6,18.35,8,46,13.5,LR_Psc,75,1,2,60,1,B,60,1,V,30,1,I,30,1,BestEfforts=1,EarliestTime=2026-09-28T00:00:00,LatestTime=2026-12-31T00:00:00

Comments

Kenneth Menzies — Oct. 1, 2026, 4:06 p.m.: Committed to NH2. Advise when you receive first set of time series in BVI. Will re-commit to run second and then third time series.
Kenneth Menzies — Oct. 1, 2026, 4:11 p.m.: Also committed to Berry since it is near the equator.
W. Allen Gilchrist — Oct. 1, 2026, 4:44 p.m.: Ken,
I notice that bsm_berry does not have an Ic filter. Will VPhot convert the SI filter data to equivalent Ic like we did with the SR to Rc data from dso35?
Allen
W. Allen Gilchrist — Oct. 3, 2026, 8:55 p.m.: I just receive notice of images from BSM Berry. I looked on VPhot, and found 240 images, but all of them appear to be with an I filter. I was expecting to get B, V, and either R or I.
W. Allen Gilchrist — Oct. 5, 2026, 9:18 p.m.: More images came today, but they are all taken with only the V filter. This single filter data is not what I need. I would like to have images taken with a sequence of B, V, I, B, V, I, ... . That way, I can process them, transform the magnitudes, and calculate a time series of (B-V) values.
W. Allen Gilchrist — Oct. 11, 2026, 1:54 a.m.: The BSM NH2 images from 10-7 and 10-10 look good. This looks like a good compromise between good SNR for each filter and sufficient cadence for the light curves.

Comments on this proposal are closed.