Wat waarneemverslagen van de afgelopen 24 uur van een komeet die een paar dagen geleden nog rond de magnitude 16 was:
Hello,
After hearing of Ramon Naves' observation last night on comet-images,
I looked at 17P/Holmes with a 25cm reflector at 76x and 214x on Oct.
24, 4:10 UT. The comet was a mag. 7.1 "star" with a yellow hue. This
morning (Oct. 24, 11:15UT), the moon was out of the sky and seeing was
excellent. To my amazement, 17P had brightened to naked eye visibility
being nearly equal to 48 Per at visual mag. 4.0. In the same
telescope, the coma showed an intense, nearly stellar false nucleus
about 2.5"-3" across set in a small, 10" diameter, much fainter,fuzzy
disklike coma. The nucleus was distinctly yellow. The comet's
appearance was very reminiscent of McNaught last winter when seen in
the daytime sky. What a sight!
Bob King
Duluth, Minn., USA
en
The comet is now naked eye at mag. 4.0!
Here are my observations over the past 10 hours:
After hearing of Ramon Naves' observation last night on comet-images,
I looked at 17P/Holmes with a 25cm reflector at 76x and 214x on Oct.
24, 4:10 UT. The comet was a mag. 7.1 "star" with a yellow hue. This
morning (Oct. 24, 11:15UT), the moon was out of the sky and seeing was
excellent. To my amazement, 17P had brightened to naked eye visibility
being nearly equal to 48 Per at visual mag. 4.0. In the same
telescope, the coma showed an intense, nearly stellar false nucleus
about 2.5"-3" across set in a small, 10" diameter, much fainter, fuzzy
disklike coma. The nucleus was distinctly yellow. The comet's
appearance was very reminiscent of McNaught last winter when seen in
the daytime sky. What a sight!
Bob King
Duluth, Minn. USA
en
Hi Bob,
thanks a lot for your important feed-back about this interesting outburst discovered by our spanish collegues!
Here is just a preview from our own follow-up, conducted few hors ago :
http://tinyurl.com/ywgy7g
The proper motion of the comet is evident, as well as its extreme brightness (severe blooming on 60 sec image through a 25cm reflector + CCD). The comet still appear nearly starlike.
Hier is een zoekkaartje voor de komende dagen, de komeet staat hoog aan de hemel in Perseus.
Hello,
After hearing of Ramon Naves' observation last night on comet-images,
I looked at 17P/Holmes with a 25cm reflector at 76x and 214x on Oct.
24, 4:10 UT. The comet was a mag. 7.1 "star" with a yellow hue. This
morning (Oct. 24, 11:15UT), the moon was out of the sky and seeing was
excellent. To my amazement, 17P had brightened to naked eye visibility
being nearly equal to 48 Per at visual mag. 4.0. In the same
telescope, the coma showed an intense, nearly stellar false nucleus
about 2.5"-3" across set in a small, 10" diameter, much fainter,fuzzy
disklike coma. The nucleus was distinctly yellow. The comet's
appearance was very reminiscent of McNaught last winter when seen in
the daytime sky. What a sight!
Bob King
Duluth, Minn., USA
en
The comet is now naked eye at mag. 4.0!
Here are my observations over the past 10 hours:
After hearing of Ramon Naves' observation last night on comet-images,
I looked at 17P/Holmes with a 25cm reflector at 76x and 214x on Oct.
24, 4:10 UT. The comet was a mag. 7.1 "star" with a yellow hue. This
morning (Oct. 24, 11:15UT), the moon was out of the sky and seeing was
excellent. To my amazement, 17P had brightened to naked eye visibility
being nearly equal to 48 Per at visual mag. 4.0. In the same
telescope, the coma showed an intense, nearly stellar false nucleus
about 2.5"-3" across set in a small, 10" diameter, much fainter, fuzzy
disklike coma. The nucleus was distinctly yellow. The comet's
appearance was very reminiscent of McNaught last winter when seen in
the daytime sky. What a sight!
Bob King
Duluth, Minn. USA
en
Hi Bob,
thanks a lot for your important feed-back about this interesting outburst discovered by our spanish collegues!
Here is just a preview from our own follow-up, conducted few hors ago :
http://tinyurl.com/ywgy7g
The proper motion of the comet is evident, as well as its extreme brightness (severe blooming on 60 sec image through a 25cm reflector + CCD). The comet still appear nearly starlike.
Hier is een zoekkaartje voor de komende dagen, de komeet staat hoog aan de hemel in Perseus.
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