Obs-V: C/2006 P1 on 2007 Jan 3.28 UT by H. Dahle.
- ===== Comet C/2006 P1 (McNaught) =====
2007 Jan. 3.28, 1.5*, 1'.7 (H. Dahle, Fjellhamar, Norway, 9x63
binoculars; 0.2-deg tail; alt. 3.9 deg.; nautical twilight);
*** Data in ICQ format ***
IIIYYYYMnL YYYY MM DD.DD eM/mm.m:r AAA.ATF/xxxx /dd.ddnDC /t.ttmANG ICQ XX*OBSxx
2006P1 2007 01 3.28 wS 1.5 TK 6.3B 9 1.7 8 0.2 ICQ XX DAH
*** Remarks ***
Jan. 3.28: The formal observation (06h43m UT) was made when the comet
was at true altitude 3.9 deg and with the Sun 9.9 deg below the
horizon. Once located in binoculars, the comet was fairly easily
visible to the naked eye as a stellar object with no apparent tail.
A short, fan-shaped tail was visible through binoculars. The deduced
m1 magnitude has been corrected for extinction using the "winter"
extinction table of ICQ, Vol. 14, pp 55-59 (1992). The comparison
stars were gamma Aql and beta Aql. A couple of 1s exposures, taken
with a Nikon D70 SLR (300mm f/5.6 lens, ISO 800), gave a good
impression of the appearance of the comet through binoculars. [DAH]
Observer: DAH = Haakon Dahle.