AAVSO: American Association of Variable Star Observers

Proposal #168

Proposer (18484) Gustav Holmberg (5063.gustav.holmberg@gmail.com) obscode: HGUA
Assigned To(3663) Dirk Terrell
Date SubmittedNov. 29, 2020

Nightly observations of four UX Ori-objects are requested using one or several BSM telescope(s). These objects are the targets of a spectroscopy program run by Gösta Gahm (Stockholm Observatory) and colleagues using the NOT 2.5-m telescope on La Palma, and in a pro-am collaboration program Swedish amateurs provide photometry used by Gahm to plan and execute the spectroscopy, amateur photometry showing dimming event is used by Gahm's group to trigger spectroscopy on NOT.

Filter: V.

Target RA (H.HH) Dec (D.DD) Magnitude Telescope Observation Frequency Expiration Date Proprietary Term
UX Ori 5.074997 -3.78731 12.0–9.0 BSM_NH2 June 6, 2021 No
BF Ori 5.620350 -6.58350 13.0–9.0 BSM_NH2 June 6, 2021 No
RR Tau 5.658475 26.37417 14.0–10.0 BSM_NH2 June 6, 2021 No
CQ Tau 5.599575 24.74836 12.0–8.0 BSM_NH2 June 6, 2021 No


(18484) Gustav Holmberg — Nov. 29, 2020, 4:23 p.m.

Update: observations will be submitted to the AAVSO International Database. I would like for images to be sent to my Vphot account.

(3663) Dirk Terrell — Dec. 2, 2020, 8:29 p.m.

The TAC suggests BVRI observations to maximize the scientific return.

(4726) Kenneth Menzies — Dec. 8, 2020, 1:11 p.m.

Committed to NM.

Comments on this proposal are closed.