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Jeremy Perez
Carpal Tunnel
*****

Reged: 08/12/04

Loc: Flagstaff, Arizona, USA
Re: Comet C/2011 L4 (PANSTARRS) new [Re: magic612]
      #5752626 - 03/23/13 08:21 PM Attachment (37 downloads)

It keeps getting better. We just got back from a visit with family in Oklahoma. We had a mostly clear evening on March 18th and I had a chance to set up the 15x70 binoculars in a field with a dozen alpaca grazing nearby.

Despite Elk City having lower altitude than Flagstaff and more moisture in the air, the comet was in great form and showing off lots of structure in its tail. I noted three brighter plumes in the main curving section of the tail. There was also a faint straighter edge along the north edge. Along the southern edge, another faint, curving edge peeled away at a broader angle, and then further down, another short, straight segment emanated from the coma. Overall, the tail stretched about 1.5 degrees across the width of the binocular field. What a beauty!

(Larger sketch and details here: C/2011 L4 (PanSTARRS) - March 18/19, 2013


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Dave Mitsky
Postmaster
*****

Reged: 04/08/02

Loc: PA, USA, Planet Earth
Re: Comet C/2011 L4 (PANSTARRS) new [Re: magic612]
      #5752833 - 03/23/13 10:01 PM

I got skunked yesterday evening, due to low clouds (I was inside the observatory's administration building when the bolide blazed across the sky so I missed that too), but tonight I had success in observing Comet PanSTARRS once more from the Naylor Observatory.

I was able to sweep the comet up in the western sky around 8:15 p.m. EDT (0:15 UT) with my 8x42s and then with my 15x70s.

Next I placed a 35mm Explore Scientific 70 degree eyepiece in the 5" f/5 finder scope (18x) and, using the 15x70s, the Telrad, and trees in the distance as landmarks, located the fading comet. I replaced the 35mm with a 14mm Explore Scientific 82 degree eyepiece and got a good look at its pseudonucleus at 45x.

The 17" f/15 classical Cassegrain produced good views at 118, 162, and 185x, with 162x being my favorite. The pseudonucleus was bright and the dust tail seemed to be wider and less uniform than on last Tuesday.

I made a rough sketch and tracked Comet PanSTARRS for about five minutes after it dropped below the western treeline. I could see a wisp of the comet through the tree limbs until 8:48 p.m. EDT (0:48 UT). The Argo Navis altitude-azimuth reading at the time was approximately 16 degrees and 288 degrees but I'm unsure how accurate that was.

Dave Mitsky


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Erik Bakker
Carpal Tunnel
*****

Reged: 08/10/06

Loc: The Netherlands, Europe
Re: Comet C/2011 L4 (PANSTARRS) new [Re: Jeremy Perez]
      #5753282 - 03/24/13 05:19 AM

Wonderful sketch and report Jeremy.

This is a comet I am growing fond of. And your sketch captures some of the reasons why.


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Erik Bakker
Carpal Tunnel
*****

Reged: 08/10/06

Loc: The Netherlands, Europe
Re: Comet C/2011 L4 (PANSTARRS) new [Re: Dave Mitsky]
      #5753284 - 03/24/13 05:22 AM

Dave,

Must have been quite a sight in the 17" Cas.

I observed the comet yesterday (March 23) with my 7x42 bino and found it faded little compared to what I saw a few nights ago.

All we need is some really clear horizon skies!


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Scanning4Comets
Markus
*****

Reged: 12/26/04

Re: Comet C/2011 L4 (PANSTARRS) new [Re: Erik Bakker]
      #5753365 - 03/24/13 08:15 AM

That's amazing Jeremy!

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blb
Post Laureate


Reged: 11/25/05

Loc: Piedmont NC
Re: Comet C/2011 L4 (PANSTARRS) new [Re: Scanning4Comets]
      #5753708 - 03/24/13 11:17 AM

I too got skunked yesterday evening(Friday, March 22), due to low clouds in my western sky.

Others are saying that the comet is now dimming, What do you think it's current magnitude is?


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MessiToM
scholastic sledgehammer
*****

Reged: 12/21/09

Loc: Huntingdon PA
Re: Comet C/2011 L4 (PANSTARRS) new [Re: blb]
      #5754001 - 03/24/13 01:31 PM

Had my second viewing last evening (3-23) I found it (barely) with my 30mm binos and then through my 6" refractor. It has definitely dimmed. I could not see it naked eye like last week.

It is still a very nice telescope target though.

Comet PANSTARRS over the valley. My scope was tracking it too.


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timokarhula
sage


Reged: 01/30/06

Loc: Sweden
Re: Comet C/2011 L4 (PANSTARRS) new [Re: blb]
      #5754324 - 03/24/13 03:46 PM

I just observed comet C/2011 L4 (PANSTARRS). On March 24.805 UT, I estimated the magnitude as 2.8 with naked eye corrected for atmospheric extinction. With my Canon 18x50 binoculars I saw a 1°.1 long dust tail towards PA 20. The eastern part of the tail was directed towards PA 65.

/Timo Karhula


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krp
Vendor. DarkSiteFinder.com


Reged: 11/10/10

Loc: Central Illinois
Re: Comet C/2011 L4 (PANSTARRS) new [Re: timokarhula]
      #5754588 - 03/24/13 05:50 PM

On March 13th I observed the comet through 10x50 binoculars, but I mostly just took pictures. I was on a 400 foot bluff 2 hours away in Wisconsin, so I had a great view to the west.

Comet Panstarrs Setting by kevin-palmer, on Flickr

On March 19th, I got a much better view through binoculars, and it was visible with the naked eye for a short time. I also observed it through my 8" dob at 70x. There was a lot more detail but the view was so shaky in the 30mph winds.

On March 22nd I found it in binoculars, but it was hard to judge the magnitude since it soon slipped behind some cirrus clouds.
Kevin


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Unknownastron
professor emeritus
*****

Reged: 04/06/05

Loc: CatsEye Observatory,Rural Sout...
Re: Comet C/2011 L4 (PANSTARRS) new [Re: krp]
      #5755125 - 03/24/13 10:30 PM

I had clear skies to the west for the first time in several days. Found the comet with my 2080 binoculars but was surprised how much it had faded. The tail only looked half as long as did it last week but the head was about 1.5 mag. less at least to my best estimate. It was at least nice for a while. If it were higher and observed at higher powers it might still be a decent view. I hope it was just me disappointe and some of you still got good views.
Clear skies and clean glass,
Mike


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Jaime Riviere
member


Reged: 05/07/09

Loc: Salamanca, Spain
Re: Comet C/2011 L4 (PANSTARRS) new [Re: Edward E]
      #5755526 - 03/25/13 05:38 AM

People, I am impressed with the photos and all the activity posted here

Unable to see the comet from Salamanca, Spain (40º58'N 5º36'W). Too cloudy


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Acheron
scholastic sledgehammer
*****

Reged: 08/07/05

Loc: Croatia, Velika Gorica
Re: Comet C/2011 L4 (PANSTARRS) new [Re: Jaime Riviere]
      #5755538 - 03/25/13 06:03 AM

Here is my image of the comet from March 22nd. That was probably my last chance to observe comet since forecast for next ten days is very bad.

Image was created from stack of 9 1.6 second exposures at ISO 3200 with 200mm lens at f/4

Comet C/2011 L4 Panstarrs, March 22nd by Vedran Vrhovac, on Flickr


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hiro
Pooh-Bah


Reged: 07/17/07

Loc: Tokyo
Re: Comet C/2011 L4 (PANSTARRS) new [Re: droid]
      #5755783 - 03/25/13 10:07 AM

I processed frames taken with FSQ-106ED during 5:22:09 and 5:35:46 March 14, 2013UTC.




This is one shot jpg image taken at 5:34:03 March 14, 2013UTC.
Here is the original. http://www.flickr.com/photos/hiroc/8589405104/




This is processed of 130 frames taken during 5:22:09 and 5:35:46 March 14, 2013UTC.
Here is the original. http://www.flickr.com/photos/hiroc/8588313831/


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Dave Mitsky
Postmaster
*****

Reged: 04/08/02

Loc: PA, USA, Planet Earth
Re: Comet C/2011 L4 (PANSTARRS) new [Re: hiro]
      #5757154 - 03/25/13 10:33 PM

An incredible image captured on March 21st shows just how wide the comet's tail has become.

http://www.astrosurf.com/comolli/com38.htm

Dave Mitsky


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magic612
Post Laureate
*****

Reged: 09/30/08

Loc: S. of Chicago's light dome
Re: Comet C/2011 L4 (PANSTARRS) new [Re: Dave Mitsky]
      #5757186 - 03/25/13 10:55 PM

Ah yes - that nicely shows what I felt like I was seeing when I was playing with the contrast of my photos earlier. Thanks for sharing that image Dave - puts a better visual on what I couldn't capture as well photographically, but was perceiving in Photoshop.

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Mike B.
Carpal Tunnel
*****

Reged: 10/24/05

Loc: Louisiana
Re: Comet C/2011 L4 (PANSTARRS) new [Re: Dave Mitsky]
      #5757392 - 03/26/13 01:53 AM

March 25, 2013 Panstarrs image:


Comet Panstarrs - Mar 25, 2013. 1x8 sec @ ISO 800. 200mm F/2.8.

Ok, I managed to get a shot of Comet Panstarrs despite the moon and lingering twilight. I couldn't see it in my 10x50's, though. Too much twilight, LP, moonlight, etc. But, the camera picked it up so you see the comet. Somewhat. lol

However, it was a little difficult to shoot images and entertain visitors simultaneously. Its a long story, but suffice it to say that by the time I was finally shooting images, the comet was already deep in the muck. It was probably there by the time it got dark enough to shoot long exposures. The window of opportunity has quickly shrunk to get anything good of Panstarrs, at least for the time being.

Oh, well… at least I didn’t scratch.


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RolandosCY
super member


Reged: 01/02/09

Loc: Nicosia, Cyprus
Re: Comet C/2011 L4 (PANSTARRS) new [Re: Mike B.]
      #5759540 - 03/27/13 03:22 AM Attachment (14 downloads)

...And the PanStarrs saga goes and goes... The brightest comet for me since Holmes, but one of the hardest ones to spot. Here, at almost 35 degrees North, the twilight is "rising" faster than the comet does! We still have a very narrow window of maybe 15 to 20 minutes around 7pm local time to observe it. On Friday March 22 evening, after a major front went through, I was still able to detect it naked eye, but it was at the limit. It looked kind of like Omega Centauri looks to the naked eye from my latitude, but in front of a much brighter sky. Certainly nothing like the spectacle of March 16th and 17th. Through binoculars the change has been much more impressive.

On Friday March 22, the tail had a broad, broom-like appearance, and the head seemed sort of elongated (like a football) through my 15x70 binos. Yet, on the next evening, under much steadier skies, using my 22x60 binoculars I could see a nice round head with an almost starlike nucleus, and a broad, fan shaped tail which seemed brighter / more distinct on the north side.

Clouds have been interfering since Saturday, I hope to be able to see the comet again over the weekend...


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Scanning4Comets
Markus
*****

Reged: 12/26/04

Re: Comet C/2011 L4 (PANSTARRS) new [Re: RolandosCY]
      #5760039 - 03/27/13 11:32 AM

Oh my!

The tail is certainly wider now! I'm going to have to see it again! Thanks for posting you guys!

Cheers,


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MessiToM
scholastic sledgehammer
*****

Reged: 12/21/09

Loc: Huntingdon PA
Re: Comet C/2011 L4 (PANSTARRS) [Re: Dave Mitsky]
      #5760318 - 03/27/13 01:36 PM

Quote:

An incredible image captured on March 21st shows just how wide the comet's tail has become.

http://www.astrosurf.com/comolli/com38.htm

Dave Mitsky




Wow, very wide


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Carol L

*****

Reged: 07/05/04

Loc: Tomahawk, WI 45N//89W
Re: Comet C/2011 L4 (PANSTARRS) [Re: MessiToM]
      #5761493 - 03/27/13 10:58 PM

Got another look at the comet tonight with the 11x70s and it wasn't as bright as it was on 3/13 and 3/21. It was a naked-eye object (averted vision) on both of those nights, but not anymore. The tail looks wider, too - the comet's overall appearance reminded me of a badminton shuttlecock.

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