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Old 25-04-2010, 05:30 PM
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Outbackmanyep
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Comet Obs 20th to 24th April 2010

Comet Observations 20th to 24th April 2010

29P/ Schwassmann-Wachmann

2010 April 20.40 UT; m1= 11.9; Dia= 1’; DC= 4/5; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Moonlight, coma small, diffuse edges with bright central condensation although not quite stellar, no tail.
Comp Star= GSC-0825-0543; Method= S; Cat= HS

81P/ Wild 2

2010 April 20.41 UT; m1= 9.5; Dia= 4.5’; DC= 6; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
Tail to the West, 6.5’in long, moonlight affected.
Comp Star= TYC 4979-721-1; Method= S; Cat= TJ

2010 April 21.57 UT; m1= 9.3; Dia= 2.5’; DC= 6; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
Coma bright, stellar central condensation, tail to the West 6’ long, tail narrower than previous observations.
Comp Star= TYC 4978-750-1; Method= M; Cat= TJ

2010 April 22.57 UT; m1= 8.7; Dia= 5.9’; DC= 6; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
Tail to the West, short and faint in moonlight, approximately 4’ long, very small but discernable central condensation.
Comp Star= TYC 4982-774-1; Method= S; Cat= TJ

2010 April 23.64 UT; m1= 8.7; Dia= 5.5’; DC= 6; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
Tail to the West, 4’ in length.
Comp Star= TYC 4981-29-1; Method= S; Cat= TJ


P/2010 H2 Vales

2010 April 20.42 UT; m1= 11.0; Dia= 0.7’; DC= 8; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Central condensation quite bright with thin faint outer coma, no tail.
Comp Star= TYC 313-556-1; Method= M; Cat= TJ

2010 April 21.56 UT; m1= 11.7; Dia= 0.7’; DC= 6; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
No tail, central condensation stellar-like, coma more diffuse with smaller central condensation.
Comp Star= GSC-0313-1130; Method= S; Cat= HS

2010 April 22.55 UT; m1= 11.3; Dia= 1.3’; DC= 6; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
No tail, coma diffuse, very small star-like condensation, moonlight affected.
Comp Star= TYC 310-706-1; Method= S; Cat= TJ

2010 April 23.63 UT; m1= 11.7; Dia= 2’; DC= 4; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
No tail, coma diffuse, no stellar central condensation.
Comp Star= GSC-0313-0686; Method= S; Cat= HS


10P/ Tempel

2010 April 22.74 UT; m1= 14.4; Dia= 0.5’; DC= 1; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma very small and diffuse, visible using averted vision.
Comp Star= GSC-5749-0219; Method= S; Cat= HS

2010 April 23.65 UT; m1= 13.8; Dia= 0.7’; DC= 1; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma faint and diffuse, even brightness, no tail, averted vision.
Comp Star= GSC-5745-0018; Method= S; Cat= HS

C/2006 W3 Christensen

2010 April 20.75 UT; m1= 10.2; Dia= 6.4’; DC= 4; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
No tail.
Comp Star= TYC 7442-224-1; Method= S; Cat= TJ

2010 April 22.73 UT; m1= 11.0; Dia= 5.1’; DC= 4/5; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
No tail.
Comp Star= TYC 7442-1838-1; Method= S; Cat= TJ

2010 April 23.67 UT; m1= 10.7; Dia= 4.8’; DC= 4/5; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
No tail, coma slightly elongated to WSW.
Comp Star= TYC 7442-1733-1; Method= S; Cat= TJ

65P/ Gunn

2010 April 22.75UT; m1= 14.4; Dia= 0.5’; DC= 1/2; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
No tail, coma small and diffuse, bright star nearby, averted vision.
Comp Star= GSC-6912-0469; Method= S; Cat= HS

C/2009 R1 McNaught

2010 April 20.76 UT; m1= 10.1; Dia= 5.5’; DC= 3; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
Diffuse coma, no tail, zodiacal light interference. Coma slightly elongated to NW, 12 degrees above horizon.
Comp Star= TYC 580-59-1; Method= S; Cat= TJ

2010 April 22.76 UT; m1= 9.9; Dia= 1.3’; DC= 2/3; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
Diffuse coma with even surface brightness, slight brightening toward centre, appears elongated WSW to ESE and elongation visible in periods of good seeing using averted vision, comet was 10 degrees above horizon.
Comp Star= TYC 580-159-1; Method= S; Cat= TJ


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  #2  
Old 26-04-2010, 06:46 AM
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Liz
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Thanks Chris . 81P still looking good by the looks ~ still havent seen it, wait for Moon to zip off.
R1 brightening ...... could be exciting!!
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