AAVSO: American Association of Variable Star Observers

Proposal #402

Proposer (45979) Petr Holecek (petr.holecek@protonmail.com) obscode: HPEE
Assigned To(3663) Dirk Terrell
Date SubmittedAug. 20, 2023

Name: Petr Holecek
Code: HPEE
Observation Use: Learning photometry with AAVSO VPHOT,
Use of Data: Submitting to AAVSO database after VPHOT analysis
Observation Cadence: Weekly
Filters required: V

Please, send me photos directly to VPHOT

Target RA (H.HH) Dec (D.DD) Magnitude Telescope Observation Frequency Expiration Date Proprietary Term
LX Cyg 21.932508 48.34792 15.1–9.1 BSM_NH2 5 March 5, 2024 No


(3663) Dirk Terrell — Sept. 1, 2023, 7:25 p.m.

Note that the TAC would prefer to have images taken in B,V,I filters rather than just V.

(2108) Arne Henden — Sept. 1, 2023, 8:28 p.m.

I think the recommendation is to take images at V and Ic, so that there is color information and the opportunity to transform the data. The problem with B images is that the star is faint, and in addition, there are two close companions just to the north that will interfere with good photometry. So at least, use V and Ic. If you want to try B as well, no problem, but just be aware that photometry will be difficult.

(45979) Petr Holecek — Sept. 2, 2023, 7:50 a.m.

Hi Dirk and Arne, how do you recommend, please for photometry in V and I. I don't feel comfortable with B now. Thank you very much.

(4726) Kenneth Menzies — Sept. 7, 2023, 1:27 p.m.

committed to NH in V&I.

used a couple of V exposures to help cover large mag range. choose best on any given night.

Comments on this proposal are closed.