Another wow... I'm just back home from observing it - very nice! It was my first good observation of R1 McNaught. Although at 20° in twilight, it was easily visible in 22x32 binos. Had used to underestimate its brightness because it is well condensed. Tonight it was situated less than 2° apart from gamma Andromedae... not just easy to find - it's evident!
UPD:
Here is my report
C/2009 R1 (McNaught) :
2010 Jun 06.99 UT: m1=5.0, dia.=&2', DC=7, no tail, 20x90B (R.Kostenko, Poltava, Ukraine)
[astronomical twilight, altitude 21°, good transparency, Bortle class 5/6]
ICQ format:
IIIYYYYMnL YYYY MM DD.DD eM mm.m:r AAA.ATF/xxxx &dd.ddnDC &t.ttmANG ICQ XX*OBSXX
2009R1 2010 06 06.99 S 5.0 TJ 9.0B 5 20 & 2 7 ICQ XX KOS05
Comments:
Well condensed, with stellar condensation.
Easily visible through 3.2cm binoculars, not visible to naked eye.
ML=10.6m (9.0B, twilight)
Local time 02:30-02:55 EEST.
