Comet McNaught (C/2009 R1)

Observations in South Bavaria / Germany

in deutsch


Comet McNaught (C/2009 R1)

Prognosis on 06/04/2010

Comet McNaught C2009/R1 has now the estimated mag* 5,3, If this trend goes further on like this it will become  a bright object of may mag* 2-3, observable between the 15th-28th of June with naked eyes easily. Best observation time is 2:00-3:00 o'clock in the morning. From the middle of June you can see the comet postioned deep in the northern direction also before midnight. Comet McNaught gets circumpolar at the 06/07/10 (Valid for the latitude 48° north ).

The way of Comet

06/06/10 at 00:30 UTC 06/15/10 at 00:30 UTC 06/22/10 at 00:50 UTC

Advice: Due to the close orbital way around the sun the comet is best to observe between the northern latitudes 47° to 52° on earth. If you are too much in the southern areas the comet will decline too near to the horizon, if you are in the upper northern part of earth the problem are the 'white nights'. That means it won't get dark enough.

Comet passing Persei delta at 06/15/2010, 00:52 - 1.06UTC

Due to the 'bad seeing' weather situation and two failure trips up to an altitude of 2000m in the Austrian/Italian Alps the last chance to get actually one image was one nice day/night at the 15th of June.

 C/2009 Comet R1   C/2009 Comet R1

This images were taken near Höchstadt/Dillingen, Bavaria. The whole night weak cirrostratus were disturbing the obeservations. Only in the last half hour before the morning dawn the sky got clearer. The upper photo was shot right trough the 'soup', the down photo near the upper bound of the hazy horizon. The comet arosed to an altitude of 15°. The brightness was hard to determine but surprisingly it seemed that the brightness of comet gets weaker. Offical observations are confirming this negative trend.

Maybe this are the last images.

C/2009 Comet R1  C/2009 Comet R1

Canon 50D auf Newton 900mm/f4.5; Orion optics

Comet at 06/06/2010, 0:00 - 1.00UTC

     Comet McNaught (C/2009 R1)  

Comet passing star Almach (6th of June , 2.00h) in a distance of 2° degree. Canon 50D, Nikkor 300/dig480 f 2,8, exposure time 3x35 sec ASA 400.

Comet at 06/05/2010, 0.15 UTC


Welcome photo (5th of June,2.30h), Left photo: Tamron 100mm F3,5, Andromeda Galaxy right up, the comet down left: Remember these little green spot. It will get growing soon.  Right photo: The comet with a little faint tail

*mag  = > light magnitude. Up to apprx. mag 4-5 stars are visible  in the city with the naked eye, in very dark areas to mag 6. --> The more high numerical value is given, the more weak are the objects.

ALL comet reports

  Lovejoy C/2014 Q2   C/2013 R1 Lovejoy  C/2012 S1 ISON   C/2011 L4 PanSTARRS   P1/2009 Garradd    

  C103P/ Hartley     2/09 N3 Lulin      11/08 Holmes      1/07 McNaught    10/06  Swan M4  

  5/06  SchwWAch  1/05  Machholz     5/04: Q4/Neat     3/01: Ikeya-Zhang

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 ©2010 photos& text by Thorsten Boeckel (tb)