AAVSO: American Association of Variable Star Observers

Proposal #309

Proposer (45802) Mikhail Ashchepkau (ashchepkau@gmail.com) obscode: AMIF
Assigned To(3663) Dirk Terrell
Date SubmittedDec. 31, 2022

Bright (10.8-14.1) mira V351 Gem has just 47 observations in AID due to its position within dence star cloud. Howewer, there are 10 comparison stars in 30 min field, which cover all V351 Gem diapasone. So short but regular CCD observations with BSM telescopes during some periods will help to get exact light curve and find possible irregularities.

I propose to add V351 Gem to regular LPV observation program and make one exposure in V band per week during two years on avialable BSM telescope. In the case of opportunity - to add exposures with R and B filters.

Indeed, I myself will try to get images for evaluations, but powerful AAVSOnet will help to study V351 Gem more and more faster and reliabler.

Target RA (H.HH) Dec (D.DD) Magnitude Telescope Observation Frequency Expiration Date Proprietary Term
V351 Gem 6.788333 15.06208 10.8–14.1 BSM_NM 5 July 8, 2023 No


(4726) Kenneth Menzies — Jan. 9, 2023, 2:57 p.m.

Committed weekly to NH and NM, in BVR

(45802) Mikhail Ashchepkau — Jan. 20, 2023, 3:23 p.m.

Sorry, correct please RA value to 6.717861.
I hope, recalculation from 06:43:04.30 is not wrong now.
Excuse please for the mistake.

(4726) Kenneth Menzies — Jan. 21, 2023, 4:14 p.m.

RA corrected.

(45802) Mikhail Ashchepkau — Jan. 22, 2023, 4:44 p.m.

Very interesting carbon mira (probably with hump) has been founded unexpectedly on BSM images got by the proposal. It is NSVS J0647197+150610 or BC213, which VSX data have been renewed by dear Sebastian. So I kindly ask to change coordinates of FOV center to:
RA 6 45 00 (6.75)
DEC +15 05 00 (15.0833)
In result both targets (V351 Gem and BC 213) will be seen within 1.5x1 deg FOV.

Well as I think, images in R and B bands are not needed due to absence of appropriate comparison stars.

Comments on this proposal are closed.