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Michael Linnolt wrote: > > On Tue, 18 Feb 2003, Brian Skiff wrote: > > > Although there are probably a lot of such unobserved late-M type variables > > > two deal with it strictly as an IRAS source (among a long list). Where > > was the star observed to be variable? When? On what plate material or > > visual or photoelectric observations? OK, you can dig down in the GCVS > > Since it appears to me to be around mag 13 and the last observation puts > it around 10.2, its already far beyond its quoted range of 11.0-11.9, > but it has no chart of its own and no nearby comp stars, so we may be > getting a problem based on this comp issue again? > > Would someone be able to do a little photometry around it? Some Tycho > stars I see nearby which would be good to nail down are: > > 6547-2061-1 V=10.522 B-V=+1.16 (maybe too red, but right next to it) > 6547-2181-1 V=11.311 B-V=+.314 > 6547-1684-1 V=10.432 B-V=+.170 > 6547-1736-1 V=9.704 B-V=+.075 > 6547-2260-1 V=12.040 B-V=+.157 > 6547-2045-1 V=12.573 B-V=+.023 > Also, something below 13 needs to be selected and measured, since the star > does seem to be that faint now. > > Thanks for any assistance! > Mike Linnolt (LMK) Hi Mike, I do not see the problem here. DV Pup is less than 1/2 degree south of V445 Pup. This field has been measured down to 20th magnitude by Arne Henden, so plenty of suitable comp. stars, I would guess. I know, the situation is not ideal, but should not pose too much of a problem for a visual observer. The RASNZ has a chart of this variable, and I think Mike Simonson also has one available on his homepage, based on the Henden sequence. best regards. ------------------------------------------------------------------- Reinder J. Bouma e-mail (1): rjbouma@wxs.nl or rjbouma@planet.nl Bekemaheerd 77 e-mail (2): comets.nl@12move.nl 9737PR Groningen homepage: http://vsnet.shopplaza.nl/astro/ The Netherlands phone: +31 (0)50-5418227 -------------------------------------------------------------------
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