Trappist ison production rates

ejehin
Message 1 of 4 , Nov 13 3:05 AM
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Dear all,

Very good news, TRAPPIST ISON production rates (all gas

species) have been x2 in only 24 hours !
We now reach about 2E28 mol/s for Q(OH) at 10.000 km.
It looks like an outburst is going on, as the increase

was not as fast the last 4 nights,
We now see also jets in OH bands same location as those

of CN and C2.
AfRho from dust continuum is only rising a bit,
R and V broad band flux have also increased by factor 2,

We should be able to get images until Nov. 18,
but window is only 20 minutes now and comet below 15

deg,

Clear skies,
Emmanuel Jehin
francois Kugel
Nov 13 3:21 AM
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Hello Emmanuel,

Our recent observations also show an acceleration of the

increase in brightness : 1 mag. /24 H

http://comet.observations.free.fr/graph/plot_mag.php?Cod

e=CK12S010&Username=&CodeObs=&y1=1908&m1=01&y2=2013&m2=1

1

Francois Kugel


Le 13/11/2013 11:05, ejehin a ;crit :

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biver_nicolas
Nov 13 10:12 PM
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ISON is visible to the Naked Eye!!

Just 40min ago before clouds came in again (it snowed

here yesterdy evening), I saw ISON with naked eye and

adverted vision (good dark sky from Pico Veleta,

SQM=21.14 to 20.9 in the zodiacal light).
It is about m1=6.3 to 6.5, estimated from naked eye and

binculars (nearly starlike).
I saw it quickly in the Celestron 8, very condensed and

hard to make out a structure, but the beginning of the

tail does not look (yet) much brighter than the days

before.
(I estimated ISON to m1=7.4 yesterday 13.22-Nov and 8.1

on the 12.2-Nov.)
Nicolas

 


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Alexandre Amorim
Message 4 of 4 , Today at 12:01 AM
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Hi friends,

I and my wife estimated ISON at magnitude 6.1
It wasn' t possible detect at naked eye due to low

altitude of comet to our site.
Our observation was made at 07:10 UT today,  nov. 14. On

cometsObs mailing list will follow complete report.



-------- Mensagem original --------
De : Nicolas.Biver@...
Data: 14/11/2013 4h12 (GMT-03:00)
Para: comets-ml@yahoogroups.com
Assunto: [comets-ml] RE: TRAPPIST : ISON outburst !


ISON is visible to the Naked Eye!!

Just 40min ago before clouds came in again (it snowed

here yesterdy evening), I saw ISON with naked eye and

adverted vision (good dark sky from Pico Veleta,

SQM=21.14 to 20.9 in the zodiacal light).
It is about m1=6.3 to 6.5, estimated from naked eye and

binculars (nearly starlike).
I saw it quickly in the Celestron 8, very condensed and

hard to make out a structure, but the beginning of the

tail does not look (yet) much brighter than the days

before.
(I estimated ISON to m1=7.4 yesterday 13.22-Nov and 8.1

on the 12.2-Nov.)
Nicolas

 


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