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Jeff Young
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Reged: 08/04/05
Posts: 3169
Loc: Ireland
Re: ALERT - Comet Holmes in mega outburst new [Re: Denmark]
      #1934390 - 10/24/07 06:40 PM

I had a hard time finding it -- I was also expecting something with a tail. Through 18x70's it looks more like a small planetary nebula than a comet. ("You mean the fuzzy thing?" asks my wife.)

Once you know where it is it's an easy naked eye object, even through high clouds with a full moon (see Keith's shot above, which is pretty similar to my sky right now).

I wonder if it's worth trundling out to the 16" in the observatory?

-- Jeff.

--------------------
Nikon 18x70s / UA Millennium                                       Colorado:
Solarscope SF70 / TV Pronto / AP400QMD                       Coronado SolarMax40 DS / Bogen 055+3130
APM MC1610 / Tak FC-100 / AP1200GTO                        Tak Mewlon 250 / AP600EGTO


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Keith g
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Reged: 02/13/05
Posts: 316
Loc: Waterford/Cavan Ireland
Re: ALERT - Comet Holmes in mega outburst new [Re: OldDeadOne]
      #1934399 - 10/24/07 06:44 PM

No tail! Last shot, unless it brightens further !

Keith..

http://farm3.static.flickr.com/2165/1734770836_c5d1ad68fc_o.jpg


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OldDeadOne
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Re: ALERT - Comet Holmes in mega outburst new [Re: Jeff Young]
      #1934434 - 10/24/07 06:54 PM

Go for it,and tell us what you see with your 16"

--------------------
Bert O'Dell

PROUD GOTO USER
LX200 10" Classic
various meade plossi's eyepieces
Konig MX70 40mm" eyepiece
11mm T6
7mm T1
Insane under a full moon
I duck from Iron Skillets
Charleston WV clearsky



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plutarko
journeyman


Reged: 03/12/07
Posts: 9
Re: ALERT - Comet Holmes in mega outburst new [Re: OldDeadOne]
      #1934440 - 10/24/07 06:55 PM

The last picture. Taken with SPC900 webcam and SC8 at F10



David Cardeñosa


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OldDeadOne
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Re: ALERT - Comet Holmes in mega outburst new [Re: plutarko]
      #1934443 - 10/24/07 06:56 PM

Sweet closeup!

--------------------
Bert O'Dell

PROUD GOTO USER
LX200 10" Classic
various meade plossi's eyepieces
Konig MX70 40mm" eyepiece
11mm T6
7mm T1
Insane under a full moon
I duck from Iron Skillets
Charleston WV clearsky



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mikey cee
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Reged: 01/18/07
Posts: 2328
Loc: bellevue ne.
Re: ALERT - Comet Holmes in mega outburst new [Re: plutarko]
      #1934449 - 10/24/07 06:59 PM

Great Caesar's Ghost I'll have to put the big Erfle on the 6" Jaegers to it tonight!! Mike

--------------------
Mike 10x50 sears tower binocs, 3" f/10 edmunds reflector, 2.4" f/11.7 manon refractor, 6" f/8 jaegers refractor, "The 8 Ball" 8" f/13.3 brandt refractor, 3" f/15.8 sans&streiffe refractor, 3.1" f/15 selsi refractor(towa 339), 2.4" f/15 sears refractor, selsi 30x30mm spyglass, criterion 5-draw 25x45x75x spyglass(1957).


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ph2
super member


Reged: 11/28/05
Posts: 103
Loc: Aalborg, Denmark
Re: ALERT - Comet Holmes in mega outburst new [Re: mikey cee]
      #1934495 - 10/24/07 07:14 PM

With a 10” refractor at 100x and 235x the comet is a round circular shaped object. The color is yellow.

It is fainter towards the edge and have a smaller and brighter innermost region. At the very edge of this brighter central area (fan shaped??) is a stellar knot or point.


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Olivier Biot
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Re: ALERT - Comet Holmes in mega outburst new [Re: ph2]
      #1934530 - 10/24/07 07:30 PM

I hope to get to see it on Friday - the only moment this week we're expected to have another astronomy window of opportunity. It was of course clear till this morning

Cheers!

Olivier

--------------------
Tal-200K (#199) with JMI NGF-Mini2M focuser on GEM3 • Astro-Tech AT80ED on Orion Sirius EQ-G with EQDIR & home made wireless EQDIRECT • Celestron Regal LX 8x42 & 10x42 • Helios 15x70
ATM 14" f/5 (designing mirror cell and filter wheel/focuser) • ATM 10" f/6 Portable Truss (polishing) • ATM 10" f/25 Dall-Kirkham (primary: polishing, secondary: #120 grit)
AstroForecast


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rodney
domed in NJ
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Reged: 03/08/05
Posts: 463
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Re: ALERT - Comet Holmes in mega outburst new [Re: OldDeadOne]
      #1934562 - 10/24/07 07:40 PM

With this comet heading away from the sun I could not imagine it would produce a tail.
Then again who knows.
CS,

--------------------
My Explora Dome construction is here:
http://www.freewebs.com/rodbo1967/observatoryconstruction.htm

Rodney

13 Truss
C8-NGT
Orion 80mm/F11
Extremely happy owner of an Explora Dome home observatory
and a list of goodies to big for this sig


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melonman
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Reged: 01/15/07
Posts: 265
Loc: NW. Minnesota
Re: ALERT - Comet Holmes in mega outburst new [Re: rodney]
      #1934627 - 10/24/07 08:00 PM

According to the Sky and Telescope article, Comet expert Gary Kronk, "expects it to grow to several arcminutes across," in the next few days. Does this mean a tail? I don't know but maybe the gas and dust will get strung out into a tail given more time. Sounds like this could last a while and be quite interesting.

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OldDeadOne
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Re: ALERT - Comet Holmes in mega outburst new [Re: melonman]
      #1934633 - 10/24/07 08:04 PM

Melonman I hope so dude!

--------------------
Bert O'Dell

PROUD GOTO USER
LX200 10" Classic
various meade plossi's eyepieces
Konig MX70 40mm" eyepiece
11mm T6
7mm T1
Insane under a full moon
I duck from Iron Skillets
Charleston WV clearsky



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Jeff Young
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Re: ALERT - Comet Holmes in mega outburst new [Re: ph2]
      #1934642 - 10/24/07 08:09 PM

Hey, thanks for the encouragement! That was pretty neat -- and I probably would have blow it off without Bert's kick in the pants.

Visually, through the 16", the fan shape was a bit more pronounced than in David's image, extending about 1/3 of the way to the outside of the "halo". The point at the tip of the fan is small, but visibly non-stellar. Visually, the halo is less graduated, keeping most of its brightness to about 90% of the way out, and then fading quite rapidly in the last 10%. The halo is about 60" across.

The yellow color was quite pronounced at 175x (26T5); a bit less-so at 260x (17T4). The seeing wasn't really up to 375x (12T4).

I did a quick sketch (my second ever), but I won't get a chance to scan it in till tomorrow.

-- Jeff.

--------------------
Nikon 18x70s / UA Millennium                                       Colorado:
Solarscope SF70 / TV Pronto / AP400QMD                       Coronado SolarMax40 DS / Bogen 055+3130
APM MC1610 / Tak FC-100 / AP1200GTO                        Tak Mewlon 250 / AP600EGTO


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rusirius6278
Carpal Tunnel


Reged: 11/03/06
Posts: 1722
Re: ALERT - Comet Holmes in mega outburst new [Re: Jeff Young]
      #1934707 - 10/24/07 08:44 PM

more info...updated from Wikipedia,

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

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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Glassthrower
Vendor - Galactic Stone & Ironworks
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Reged: 04/07/05
Posts: 14687
Loc: Hurricane Alley
Re: ALERT - Comet Holmes in mega outburst [Re: rusirius6278]
      #1934730 - 10/24/07 08:52 PM

My only scope mount is off being serviced! Of course!

All I have at my disposal is tripod mounted 15x70 binoculars from my urban NELM ~4.5 skies. With no tail and moon inteference, I am not liking my chances of picking it out from the crowded Perseus starfield.

--------------------
Michael Gilmer - Member of the Meteoritical Society & Collector of Falling Stars.



Galactic Stone & Ironworks - Buy/Sell/Trade Meteorites, Moon Rocks, Mars Rocks, & 35 different falls and types!



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rusirius6278
Carpal Tunnel


Reged: 11/03/06
Posts: 1722
Re: ALERT - Comet Holmes in mega outburst [Re: rusirius6278]
      #1934743 - 10/24/07 08:59 PM

more comet info:

http://www.aerith.net/comet/weekly/current.html

1st paragraph sums it up nicely.

http://cometography.com/pcomets/017p.html

last paragraph is about the curent sudden brightening...for those who don`t want to read all the history, etc., and/or the whole article...and, of course, the link`s also provided for those who do want to read the history, etc...

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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Tuugii
professor emeritus


Reged: 03/22/07
Posts: 522
Loc: Ulaanbaatar, Mongolia
Re: ALERT - Comet Holmes in mega outburst [Re: rusirius6278]
      #1934773 - 10/24/07 09:10 PM

hey guys,

I had just got the permission to use the 21" cass. scope for imaging the comet for the period of one week!

I'll use my Canon Xti camera. Any advices on the values of ISO, exposure? we have a bright moon tonight.

thanks,
Tuugii

--------------------
telescope=time machine...


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Tom TrusockAdministrator

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Reged: 02/26/02
Posts: 27405
Loc: Alternate Reality (TM)
Re: ALERT - Comet Holmes in mega outburst [Re: rusirius6278]
      #1934774 - 10/24/07 09:10 PM

A buddy just spotted it about an hour from me. It's still cloudy here.

He puts it at ~ mag 2.5. It makes a backwards L with alpha and delta per. The good news is there's nothing else there remotely that bright.

I'm hoping these clouds clear....

--------------------
There are two theories to arguing with my wife. Neither one works.


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Glassthrower
Vendor - Galactic Stone & Ironworks
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Reged: 04/07/05
Posts: 14687
Loc: Hurricane Alley
Re: ALERT - Comet Holmes in mega outburst [Re: Tom Trusock]
      #1934787 - 10/24/07 09:15 PM

It's clear outside right now, I just came in from trying with my 15x70 bino and I could not pick it out. I see Alpha and Delta, but I cannot pick out a bright yellow "star" ....?

Is the "L" upside down or right side up?

--------------------
Michael Gilmer - Member of the Meteoritical Society & Collector of Falling Stars.



Galactic Stone & Ironworks - Buy/Sell/Trade Meteorites, Moon Rocks, Mars Rocks, & 35 different falls and types!



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RogerRZ
Whatta you lookin' at?
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Reged: 01/09/06
Posts: 2165
Loc: West Collette, NB, Canada
Re: ALERT - Comet Holmes in mega outburst [Re: Tom Trusock]
      #1934788 - 10/24/07 09:15 PM

Quote:

A buddy just spotted it about an hour from me. It's still cloudy here.

He puts it at ~ mag 2.5. It makes a backwards L with alpha and delta per. The good news is there's nothing else there remotely that bright.

I'm hoping these clouds clear....




It's clear here, and an easy naked eye pick. It's fuzzy yellowish blob is unmistakeable, even through my cheapie 8X42s...

--------------------
-Roger Pitre-


1 X 7 binocular
Meade 2080 LX10
5" Celestron SCT
Skywatcher Equinox 66
Starblast OTA


EQ6 Pro mount (spiffed up with ADM stuff)

8X42 Bushnell binos (pretty decent for 25$)
Canon Rebel XT (AKA 350D)
Starshoot autoguider

Tolerant Spousal Unit (AKA The Lovely Mrs. RogerRZ)


----------AJP Observatory----------


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Tuugii
professor emeritus


Reged: 03/22/07
Posts: 522
Loc: Ulaanbaatar, Mongolia
Re: ALERT - Comet Holmes in mega outburst [Re: OldDeadOne]
      #1934795 - 10/24/07 09:17 PM

Quote:

Is there a tail viewable with this comet?




no tail. just a bright orange glow.

--------------------
telescope=time machine...


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