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New Naked Eye Comet - 17/P Holmes

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16 years 7 months ago #53924 by dokeeffe
Replied by dokeeffe on topic Re: New Naked Eye Comet - 17/P Holmes
Finally got a glimpse this evening through a break in the clouds.
Nive photo Paul. You can really see the tail in the negative.
Derek

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16 years 7 months ago #53930 by Cygnus
Replied by Cygnus on topic Re: New Naked Eye Comet - 17/P Holmes
Hi again

thanks Michael O and dmsdona
I was lucky this evening and got a second chance for looking at this comet
it's bigger then 4 days ago and has moved
i made a new montage of this, so you can see the distance it has traveled
along the skies
this and the originals are in my web-folder

i hope you like it



picasaweb.google.nl/H.Nieborg/Astrofotos...#5128798670130880018

Henk
LXD75 6"Newton Nikon D70

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16 years 7 months ago #53933 by dave_lillis
Replied by dave_lillis on topic Re: New Naked Eye Comet - 17/P Holmes
This comet is nearly 1/3rd the size of the full moon, it not exactly nearby as its out by the asteroid belt, anyone able to find an estimate of the size of this thing?

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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16 years 7 months ago #53942 by Cygnus
Replied by Cygnus on topic Re: New Naked Eye Comet - 17/P Holmes
that's what i wanted to know Dave L.

i found an article on wikipedia, they talk about a size of 70% of the diameter of the sun:

en.wikipedia.org/wiki/17P/Holmes

interesting article

Henk
LXD75 6"Newton Nikon D70

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16 years 7 months ago #53944 by phoenix
Replied by phoenix on topic Re: New Naked Eye Comet - 17/P Holmes
This was Holmes last night at a distance of 2.48 au from the sun



Now compare this with Tuttle(mag 12) at 1.59 au from the sun




I used the small angle formula on the Holmes image and this gave a diameter of about 1 million km for the coma.

Kieran
16" ODK (incoming), Mesu Mount 200, APM TMB 80mm, SXV H16, SXV H9
J16 An Carraig Observatory
ancarraigobservatory.co.uk/

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16 years 7 months ago #53945 by paulevans
Replied by paulevans on topic Re: New Naked Eye Comet - 17/P Holmes
I'm well impressed that you can get Tuttle at that magnitude Kieran - excellent work!

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