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C/2007 N3 (Lulin)

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#276 Special Ed

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Posted 08 March 2009 - 09:24 PM

Jeff and Bill--great sketches of Lulin and M44--and you can see how far Lulin moved in the time between Jeff's drawing and Bill's drawing. :cool:

Michael --

I don't mind at all; it looks great! :waytogo:

Cheers,
-- Jeff


Thanks for letting me place my observation in your drawing, Jeff. When I saw your fine sketch I could have kicked myself for not doing one to compare with yours--it would have been almost the same FOV. Only thing I can say as a mitigating circumstance is that I had to get up at 5:30 for work and it was already 10:30 the night before. :p

#277 CarlosEH

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Posted 09 March 2009 - 03:56 PM

Jeff, Julian, Michael, and Mike

Excellent images and observations of Comet Lulin. It is fun to follow the comet through your images and observations. I look forward to future observations and images.

Carlos

#278 stevecoe

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Posted 10 March 2009 - 03:10 AM

Howdy all;

Using a friend's 10X50 binoculars tonight around 11 PM this comet was somewhat difficult with the nearly Full Moon pretty high in the sky. It had low contrast with the light grey background glow from the Moon. I would estimate that the comet was about 10 arcminutes in size and did show a very little amount of central brightening, but not much.

I will be great to see what happens when the Moon in out of the sky, say by the weekend.

Clear skies to us all;
Steve Coe

#279 CarlosEH

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Posted 10 March 2009 - 12:43 PM

I was able to observe Comet Lulin (C/2007 N3) last night (March 10, 2009 at 02:30 U.) while located between Cancer and Gemini using my 11 x 56 mm Oberwerk binoculars. Although a Waxing Gibbous Moon was present I was able to make out the comet well. The coma was diffuse and spherical. The ion tail was faintly visible in a northwest-southeast direction. The stars visible are between fifth to seventh magnitude. I hope others are able to follow the comet as well.

Carlos

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#280 CarlosEH

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Posted 11 March 2009 - 01:05 AM

I was able to observe Comet Lulin (C/2007 N3) on March 11, 2009 (01:00 U.T.) as it moves towards Gemini using my 11 x 56 mm Oberwerk binoculars. The coma was again compact but diffuse with a portion of the ion tail visible (less than that visible the night before as the Moon tonight was Full). I have depicted two binocular fields to show the motion of the comet (~1.5 degrees) since last night. I hope that others have been able to view the comet as well.

Carlos

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#281 nytecam

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Posted 11 March 2009 - 03:47 AM

Nice one Carlos :bow: haven't 'looked' for awhile but last night [Mar 10] through haze and full moon look like this below Pollux via my ETX-70 ;)

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#282 Special Ed

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Posted 11 March 2009 - 09:08 AM

Carlos,

Excellent observations and sketches. :) Lulin's apparent motion has slowed down considerably.

Maurice--always glad to see your pics. :cool:

Thanks for posting.

#283 Jimbo100

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Posted 12 March 2009 - 06:53 PM

Good work everyone,

Just thought I'd post a couple of older images from 01/02 March.

The first was taken with a 200mm camera lens @ f/5.0

#284 Jimbo100

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Posted 12 March 2009 - 07:00 PM

And this one was taken using my 80mm 555m fl refractor.

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#285 Bill Weir

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Posted 13 March 2009 - 01:26 AM

Tonight as we were packing up after doing an elementary school outing, someone said, "did you look at the comet?" I had completely forgotten. One person had looked up the location so we were on it quickly with a 10" dob. My 10X50 binos also showed it rather readily and we were in the middle of suburbia.

With the 10" dob (not sure what kind of eyepiece but he said it was 25mm there was a surprising amount of detail visible.

Later when I got home to my much darker backyard, I re-setup my f/8 6" dob and continued observing and did a sketch. There was a reasonably bright head like coma with an even brighter pseudo nucleus. The tail still streamed off to the SE but it's appearacne had change dramatically since I'd obseved it last about a week ago. It was far more fan like. There was a fairly hard, straight edge, along the northern side. It fanned down in a southernly direction in an uneven manner. There was an about 20'long brighter line extending off the coma within the tail in an almost due SE direction.

I'd be very interested to see an image of this comet now, in order to determine if what I believe I was seeing was true. Here is the sketch I did at just 2200hrs PDST.

Bill

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#286 hiro

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Posted 14 March 2009 - 08:25 AM

Hi all,

I combined three pics of comet Lulin taken on February 21, March 2, and 11, 2009 in a same scale.
The comet got small.

Select image size in following links:

small 500 x 322 pixel 80KB:
http://farm2.static...._5b42f6685a.jpg

medium 1024 x 659 pixel 276KB:
http://farm2.static....b42f6685a_b.jpg

original 7545 x 4852 pixel 15.8MB:
http://farm2.static....37602c88f_o.jpg

#287 Jeff Young

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Posted 14 March 2009 - 05:05 PM

Just finishing up my sketch of Lulin tonight, and I noticed that one of my "stars" isn't. (Or rather, there is a star there, but it only looks as bright as I sketched it when you integrate in a bit more light from the inner shell.)

Anyway, to make a long story short, the Eskimo looks stellar at 18x. ;) I'd estimate that Lulin was about 30' away at 21:30UT.

Sketch to follow....

-- Jeff.

#288 Jeff Young

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Posted 14 March 2009 - 06:30 PM

Went out and opened up the observatory. With 16" at 100X, the Eskimo looks a bit more, well, Eskimo-ish. The comet just fit in the field with it, but I couldn't bring it to focus. The harder I tried, the dimmer it got. I finally got up and checked the slot, and sure enough -- complete cloud cover. I gave it 45 minutes, to no avail, and gave up. Dang it.

-- Jeff.

#289 Jeff Young

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Posted 15 March 2009 - 05:14 AM

... and the sketch from last night:

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#290 Bill Weir

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Posted 15 March 2009 - 06:57 PM

And here's my view of Lulin and the Eskimo, as viewed form the other side of the planet.
http://rascvic.zenfo...01349#h19601349

Bill

#291 Jeff Young

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Posted 16 March 2009 - 10:59 AM

Nice one, Bill. At least now I can imagine what it would have looked like with enough magnification. ;)

Cheers,
-- Jeff.

#292 CarlosEH

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Posted 17 March 2009 - 09:33 PM

Excellent images and observations of the comet. It is interesting to compare the changes over time in the comet. Thank you for sharing them with us all.

Carlos

#293 CarlosEH

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Posted 17 March 2009 - 09:38 PM

I was able to observe Comet Lulin (C/2007 N3) on March 16, 2009 (00:45 U.T.) using my Oberwerk 11 x 56 mm binoculars. The comet has faded somewhat since my last observation. The coma is small and diffuse and the tail has disappeared. Comet Lulin is approximately one degree from the Eskimo Nebula (NGC 2392). I missed the close approach of the comet to the Eskimo Nebula last night when it was approximately 20 arc-minutes from it. The comet was approximately 1.4 degrees east of Delta Geminorum (Wasat, 3.50m) and 0.5 degree southwest of 63 Geminorum (5.2m).

Carlos

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#294 CarlosEH

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Posted 17 March 2009 - 09:39 PM

Comet Lulin (C/2007 N3) was visible on March 16, 2009 (02:45 U.T.) approximately one half a degree from Delta Geminorum (Wasat, 3.50m) using my 11 x 56 mm Oberwerk binoculars. The comet appeared fainter than my previous observation. I am uncertain if this is due to a fading of the comet or atmospheric haze. It will be interesting to follow in the future.

Carlos

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#295 Dean Norris

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Posted 18 March 2009 - 01:56 AM

I observed Comet Lulin last night (3-16-09} through my 10" newt. I used the finder chart on Sky Telescope's website to locate the position in 7x50 binoculars. In binoculars it looked like a fuzzy faint star. Since I haven''t seen the comet for a while I don't think I could have found it without the chart from S+T. In my telescope at 38X the comet was so much smaller and fainter from back during it's closest point. I observed at 77X and 154X and enjoyed the view at 154X the best. At this magnification the comet had a stellar like nucleus with a halo around it which resembled a nebulae. I observed it long enough to notice some movement across the sky. It was near a star which was a little brighter than the comet's nucleus, and during the 45 minute session, I saw it gradually increase it's distance from that star. It was fun to observe it again and I enjoyed the challenge of hunting it down in the sky. Dean

#296 Bill Weir

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Posted 18 March 2009 - 02:04 AM

The seeing and transparency were good tonight so I had another look and did another sketch of this comet. Far more detail was seen in the extensions of the tails.

This is how I saw it using my f/8 6 inch dob at 30x magnification with an approximately 2º TFOV. The bright star to the NE of the comet (bottom of the sketch) is Delta Gem, the star that is the waist of Pollux.

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#297 Special Ed

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Posted 18 March 2009 - 07:04 PM

Good reports everyone and some great sketches from Carlos Hernandez, Jeff Young, and Bill Weir since I last checked in. :bow:

Clouds, work, and moonlight have kept me away from Lulin since March 5th, but last night, Tues. March 17th (St. Paddy's Day, Jeff :) ), I got an opportunity to look at Lulin once again.

Bill, it seems I was out about one hour and forty-five minutes before you were. Comparing our sketches, Lulin didn't really shift its position in that interval very much. I doubt it moved more than a couple of arcminutes in the hour I observed it. You can really tell it's headed on out from us now.

I knew fron starcharts that the comet was close to Wasat (Delta Gem) in Gemini. I used a nice, fairly widefield 23mm Burgess Optical EP that gives me 19x and a 2.5° FOV in the Astroscan to locate the comet. Centering on Wasat, I looked and saw nothing. I scanned around--still nothing. I went back to Wasat and looked harder--there it was, about 1° SW of Wasat. Lulin has *really* faded since I last saw it two weeks ago in the moonlight.

I bumped the magnification up to 29x and then 37x. The comet tail appeared fanlike and spread out to the SE ( ~PA 110°) and about 20 arcmins long. There was a faint extension to the SSE (~PA 165°). Here are the details:
m1= 7.2 DC= 3 Dia= 8'

It was nice to see Comet Lulin again as it heads on back out to the Oort Cloud--what a journey!

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#298 Mike B.

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Posted 18 March 2009 - 07:14 PM

Finally, the moon is out the way and the skies are clear again. We needed the rain, but I sure wish it would have done it during full moon. lol :D

Lulin and Earth are quickly parting company, but it's still pretty nice as comets go. I took advantage of the clearing and shot 40 subs of the little dirty snowball. Check it out:

Posted Image
Comet Lulin on Mar 18, 2009, 02:21 UT. 40x180 sec @ ISO 1600, TV-85 at F/5.6, IDAS-LPS, Hutech Canon XS, Atlas EQ-G w/EQMOD.

Thanks for looking. Hope ya'll like it. :)

#299 Jeff Young

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Posted 19 March 2009 - 07:42 AM

Nice colors, Mike. I love the sketches by Bill and Michael too.

Well done, lads. :waytogo:

-- Jeff.

#300 frank5817

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Posted 19 March 2009 - 10:08 AM

Great sketches and images of the comet as it moves away. It certainly was a pleasing sight this winter.

Frank :)






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