Proposal #701

Proposer	(55006) Andre Rozmanic (andrerozmanic@gmail.com) obscode: ARHA
Assigned To	(3663) Dirk Terrell
Date Submitted	June 18, 2026
Status	Allocated
Priority	Normal
Proposal	Project Title: Light Curve Mapping and Period Verification of Delta CepheiAbstract / Justification:I propose the monitoring of the prototype Cepheid variable Delta Cephei (del Cep). The primary scientific goal is to map a high-precision multi-band light curve to monitor the star's pulsation dynamics and verify its current 5.366-day period against historical AAVSO data. This data will also serve as a foundational dataset for practicing advanced ensemble photometry via VPhot.Observing Strategy:Due to the bright nature of the target (V ~3.5 to 4.4), I request observations using the Bright Star Monitor (BSM) network with appropriately short exposure times to avoid saturation.Target: del Cep (RA 22.486186, Dec +58.415194)Filters: Standard Johnson B and VCadence: 1 to 2 times per night on clear nightsTotal Program Duration: 45 days to capture roughly 8 full phase cycles.

Targets

Target Name	RA (H.HH)	Dec (D.DD)	Magnitude	Observation Frequency	Expiration Date	Proprietary Term
del Cep	22.486186	58.41519	4.37–3.48	1	Dec. 19, 2026	1 Year

Plans currently in place

bsm_nh2/AAVSO_P701_ARHA_AUTO.csv

# $Id: AAVSO_P701_ARHA_AUTO.csv 5903 2026-07-12 21:22:06Z MZK $
#PROPOSAL=701
#REQUESTER=ARHA,,vphot
#target,hh,mm,ss.ss,dd,mm,ss.s,desc,priority,monitor,maxX,nrepeat,bin,[filter,exposure,nexp]
del_Cep,22,29,10.2696,58,24,54.6984,del_Cep,75,1,2,1,1,V,0.69,15,HourAngle=-3 -2,BestEfforts=1,EarliestTime=2026-06-18T00:00:00,LatestTime=2026-12-19T00:00:00
del_Cep__1,22,29,10.2696,58,24,54.6984,del_Cep,75,1,2,1,1,V,0.69,15,HourAngle=-2 -1,BestEfforts=1,EarliestTime=2026-06-18T00:00:00,LatestTime=2026-12-19T00:00:00
del_Cep__2,22,29,10.2696,58,24,54.6984,del_Cep,75,1,2,1,1,V,0.69,15,HourAngle=-1 0,BestEfforts=1,EarliestTime=2026-06-18T00:00:00,LatestTime=2026-12-19T00:00:00
del_Cep__3,22,29,10.2696,58,24,54.6984,del_Cep,75,1,2,1,1,V,0.69,15,HourAngle=0 +1,BestEfforts=1,EarliestTime=2026-06-18T00:00:00,LatestTime=2026-12-19T00:00:00
del_Cep__4,22,29,10.2696,58,24,54.6984,del_Cep,75,1,2,1,1,V,0.69,15,HourAngle=+1 +2,BestEfforts=1,EarliestTime=2026-06-18T00:00:00,LatestTime=2026-12-19T00:00:00
del_Cep__5,22,29,10.2696,58,24,54.6984,del_Cep,75,1,2,1,1,V,0.69,15,HourAngle=+2 +3,BestEfforts=1,EarliestTime=2026-06-18T00:00:00,LatestTime=2026-12-19T00:00:00

Comments

(3663) Dirk Terrell — June 22, 2026, 11:23 p.m.: Put on a different BSM from the one used for proposal #281 and shoot for ~6 observations per night.
(4726) Kenneth Menzies — June 27, 2026, 11:25 p.m.: committed to NH2.

Comments on this proposal are closed.