[AZ-Observing] Re: Chi Cygni at Maximum

  • From: Tom Polakis <tpolakis@xxxxxxx>
  • To: az-observing@xxxxxxxxxxxxx
  • Date: Fri, 10 May 2013 10:16:23 -0400

Correction: slightly brighter than Eta Cygni, and certainly not brighter than 
Albireo.  It was early.


---- Tom Polakis <tpolakis@xxxxxxx> wrote: 
> On another forum, Brian Skiff mentioned that the Mira-type variable star Chi 
> Cygni is near maximum.  It is located very near the zenith at 4 a.m.,  just 
> before dawn.  We took a look this morning, and it's obvious from Tempe, even 
> though the Cygnus Milky Way is an averted vision haze.  Chi Cygni is 
> conveniently located along the cross, closer to Alberio than the ever-present 
> Eta Cygni.  To my eyes, Chi appeared just slightly brighter than *Eta Cygni*, 
> although measurements show them both at magnitude 3.9.
> The brightness of Chi Cygni may be plotted using AAVSO's Light Curve 
> Generator.
> http://www.aavso.org/data/lcg/
> Simply enter "Chi Cyg" and some number of days.  Entering 4000 days shows ten 
> cycles, whose maxima range from 3rd to 5th magnitude.

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