SOHO-LASCO Comet Reports for 200307

Jul 03 2003 11:52:56 mike boschat
mboschat@eastlink.ca
Possible comet in C2 at 20030703_1254 UT


Faint gloublar looking.
Pixels may be off few.
777, 460 lower left corner

Time X Y
--------------
1254 706 397
1353 704 385
1429 700 379

Mike Boschat

Jul 04 2003 10:41:44 Christian Virella
christian_virella@hotmail.com
There is a possible comet in the C2 mpeg movie images. I found the object today (July 4, 2003) at 6:30 U.T. The object doesn't appear to have a tail. The object is seen in 2 images. I found the object in the lower left corner(0,0). The x,y positions are: 


X Y
836 334
814 333

The object is found in the images of July 3, 2003, bye.
Jul 05 2003 15:35:21 Christian Virella
christian_virella@hotmail.com
There is a possible comet in the mpeg C2 images of July 4, 2003. Like the other report, this object can be seen moving south to north in only 2 images. The object doesn't appear to have a tail. I found the object today (July 5, 2003) at 11:23 U.T. The object is seen in the upper left limb (0,0) of the sun in these two images: 2003/07/03 00:54 and 2003/07/03 1:30. In the second image the object looks blurry but it is still noticible. The x and y coordinates are: X    Y

958 293
495 293

The object is seen in the images of July 3, 2003, bye.
Jul 05 2003 16:10:57 Xavier Leprette
xavier.leprette@wanadoo.fr
Possible Kreutz comet in a real-time C2 now


The object is starting on 2003/07/05 at 12:54 UT
it is visible in 2 consecutive images.
Short tail visible, obvious object

0,0 in top-left corner of 512x512 frames :

19:54 509,411
20:06

Xavier Leprette
Jul 05 2003 16:10:59 John Sachs
imagephoto@blazenet.net
Possible Kreutz in C2 

B&W enlarged 1024x1024
Positions: (0,0) upper left,
Date Time x y
2003/0/07/05 C2 20:06
2003/0/07/05 C2 19:54 1019 821
John
Jul 05 2003 16:13:50 Xavier Leprette
xavier.leprette@wanadoo.fr
Possible Kreutz comet in a real-time C2 now


The object is starting on 2003/07/05 at 19:54 UT
it is visible in 2 consecutive images.
Short tail visible

0,0 in top-left corner of 512x512 frames :

19:54 509,411
20:06 506,407

Xavier Leprette
Jul 05 2003 16:14:23 John Sachs
imagephoto@blazenet.net
Congrats Xavier. A bright Kreutz!

John
Jul 05 2003 16:14:54 Rainer Kracht
R.Kracht@t-online.de
possible comet in C2 images

b/w 512*512 from the LASCO website
enlarged to 1024*1024
0,0 in upper left corner

Date Time x y
20030705 1954 1020 824
20030705 2006 1014 816

Rainer
Jul 05 2003 16:22:52 Rainer Kracht
R.Kracht@t-online.de
Congrats Xavier!

It's visible in C3 images also.

b/w 512*512 from the LASCO website
enlarged to 1024*1024
0,0 in upper left corner

Date Time x y
20030705 1818 636 566
20030705 1942 628 554

Rainer
Jul 05 2003 16:52:35 Xavier Leprette
xavier.leprette@wanadoo.fr
Possible Kreutz comet in a real-time C2 

Last UPDATE :

The object is starting on 2003/07/05 at 19:54 UT
Bright comet with a nice short tail.

0,0 in top-left corner of 512x512 frames :
19:54 509,411
20:06 506,407
20:30 500,399

Yes Rainer it is easily seen in C3 also
John, 2 sec it's very few, so I hope Derek will give you credit for this one.

Xavier
Jul 07 2003 08:30:06 Chen Donghua
cdh_email@163.net
Possible sungrazer comet in C2 images.

1024x1024 (0,0 upper left)
2003/07/05 19:54 1019(x) 821(y)
/07/05 20:30 1001 798
/07/05 21:30 971 755

Regards,
DongHua Chen
Jul 07 2003 08:41:21 Chen DongHua
cdh_email@163.net
UPDATE the sungrazer comet in C2 images.

1024x1024 images,(0,0 top left)
2003/07/05 19:54 1019(x) 821(y)
20:06 1013 812
20:30 1001 798
21:08 981 771
21:30 971 755
21;54 955 738
Regards,
DongHua Chen
Jul 07 2003 10:29:42 Pavel Shkreby
pavelsh@internet.kuban.ru
Possible Kreutz comet in a real-time C3 images.

Visible from 2003/07/06 15:42 UT in 3 images.
Position in last images
Time X Y
15:42 - 658.617
16:18 - 656.613
16:42 - 655.611
1024x1024 0.0 - upper left corner
----------
Pavel
Jul 07 2003 10:45:41 DongHua Chen
cdh_email@163.net
Yes, Xavier's C2 comet.

I did not read earlier messages.
Sorry.
Donghua Chen
Jul 07 2003 14:02:24 John Sachs
imagephoto@blazenet.net
I can confirm Pavels report

of Jul 07 2003 10:29:42
Faint Kreutz.2003/07/06 at Images 13:18-16:42
John
Jul 07 2003 16:52:39 Pavel Shkreby
pavelsh@internet.kuban.ru
UPDATE Kreutz comet in C3 images.

Visible from 2003/07/06 13:18 UT in 6 images.
Position in last images
Time X Y
13:18 - 665.631
14:42 - 662.624
15:18 - 660.620
15:42 - 658.617
16:18 - 656.613
16:42 - 655.611
1024x1024 0.0 - upper left corner
----------
Pavel
Jul 07 2003 17:10:54 Derek Hammer
derek.hammer@nrl.navy.mil
Hello, I can confirm  one comet which is listed below.


Pavel, I can see your C3 claim but not with enough confidence to
call it a comet. I believe the 13:18 and 14:42 images are
not consistent in appearance with the last 4 images (15:18-16:42)
that are point-like and represent the best argument for a comet.
However, 4 point-like objects just above the background is hardly
enough evidence considering it's in C3 images. Therefore, I am
designating it a x-comet.

Christian, your first claim does not tell me what time your
positions represent. Also, do not tell us when you first id'd
your suspect comet...just the image times is important. Second,
based solely on the positions you give I can tell they are not
comets. The comets we observe move with known speeds throughout
the year, and your positions are way off. I am concerned that you
have not taken time to study past comets and to review the
information for new people on the "Found Something?" link. You
need to review this information if you are going to have any
success finding LASCO comets. Also, do not post a comet claim with
less than four positions until you are successful at finding new
comets. The reason is that new rules will be soon be put in place
that ban those people who submit false claims with less than 4
positions. Please email me with any questions.


SOHO# Discoverer Dates Camera
===================================================
641 X. Leprette/J. Sachs 03/07/05 C2,C3


Derek
Jul 08 2003 10:46:20 Christian Virella
christian_virella@hotmail.com
Possible comet in Lasco C2 images. 


Date: July 8, 2003.

Brief description:
Faint sungrazing comet, no tail visible.

Positions: 256x256 images, (0,0) Lower right corner.

Time (x,y)

2003/07/06 1:54 351 329
2:05 288 330

Regards,

Christian Virella
Jul 08 2003 10:52:33 Maik Meyer
maik@comethunter.de
Christian,


haven't you read the advise Derek has given? If not, please be
sure to read his red post!

Regarding your post: First I can not see how your coordinates fit
in an 256x256 image. Assuming that you have used 512x512 images
then the velocity is way to high for a comet and the direction
does not fit the Kreutz path for this time of year.

Again, try to obey Dereks advise.

Regards, Maik
Jul 11 2003 08:08:10 Rainer Kracht
R.Kracht@t-online.de
possible comet in C2 images

b/w 512*512 from the LASCO website
enlarged to 1024*1024
0,0 in upper left corner

Date Time x y
20030711 1030 1008 342
20030711 1106 1000 342

also visible in C3 1118

Rainer
Jul 11 2003 08:17:39 Rainer Kracht
R.Kracht@t-online.de
UPDATE comet in C2 images

b/w 512*512 from the LASCO website
enlarged to 1024*1024
0,0 in upper left corner

Date Time x y
20030711 1030 1008 342
20030711 1106 1000 342
20030711 1130 996 344
20030711 1154 992 344
20030711 1206 990 344

slow moving, non-group comet

also visible in C3 1118, 1142

Rainer
Jul 11 2003 08:26:51 Rainer Kracht
R.Kracht@t-online.de
Many comets now in LASCO images :-)

The images are rotated and stars
move from right to left.
Please ignore my latest posts.

Rainer
Jul 11 2003 12:42:16 mike boschat
mboschat@eastlink.ca
Comet in C2 at 20030711_1558 UT


****** NOTE ******
x-coordinates are probably correct,
but y-coordinates may be off by
several pixels.
0,460 in lower left corner
LASCO C2 IMAGES - 512 x 512

Date Time X Y
-------- ---- --- ---
20030711 1558 507 373
1602 508 367
----------------
Michael Boschat
Jul 11 2003 12:43:29 mike boschat
mboschat@eastlink.ca
NOTE to last POST...IMAGES

are in B&W 512!

Mike Boschat
Jul 11 2003 13:37:13 mike boschat
mboschat@eastlink.ca
UPDATE:


I don't know if anymore images are going
to come in so I'm putting 3 XY's. Yep, the
stars move right to left but this object
is moving opposite and towards the sun
in the images I have. Soooo...I'll
leave this open. I can't stay on all
day at this site and have to log off.


****** NOTE ******
x-coordinates are probably correct,
but y-coordinates may be off by
several pixels.
0,460 in lower left corner
LASCO C2 B&W Images - 512 x 512

Date Time X Y
-------- ---- --- ---
20030711 1558 507 373
1602 508 367
1630 504 366
----------------
Michael Boschat
Jul 12 2003 23:01:42 John Sachs
imagephoto@blazenet.net
Possible Kreutz Comet  C3

B&W enlarged 1024x1024
Positions: (0,0) upper left, 1024x1024
Date Time (x, y)
2003/0/07/13 C3 02:42 367 392
2003/0/07/13 C3 02:18 364 387
2003/0/07/13 C3 01:42 361 383
2003/0/07/13 C3 00:42 357 378
John
Jul 13 2003 02:02:27 John Sachs
imagephoto@blazenet.net
Update on:

Possible Kreutz Comet C3
B&W enlarged 1024x1024
Positions: (0,0) upper left, 1024x1024
Date Time (x y)
2003/0/07/13 C3 04:18 375 401
2003/0/07/13 C3 03:42 373 398
2003/0/07/13 C3 03:18 371 395
2003/0/07/13 C3 02:42 367 392
2003/0/07/13 C3 02:18 364 387
2003/0/07/13 C3 01:42 361 383
2003/0/07/13 C3 00:42 357 378
John
Jul 13 2003 17:03:05 David Evans
dave.nokia3330@orange.net
A possible very small, very faint Kreutz comet in C3 images of

2003/01/23.

1024 x 1024 gifs. 0,0 Top Left.

Visible in 5 frames and requiring higher magnification to see.

15:18 338, 559
15:42 340, 558
16:18 344, 555
16:42 346, 554
17:18 350, 551

- Dave
Jul 13 2003 20:52:52 Bo Zhou
xpzhoubo@tom.com
Jul 14 2003 08:52:00 Bo Zhou

-------------------------------------------
xpzhoubo@tom.com

Possible comet in C3 at 2003/07/13 04:18 UT

512X512 gifs,

0,0 in upper left corner

Time X , Y
04:18 188,456
05:18 190,454
бн
10:44 199,448
бн
--------------
Bo Zhou
Jul 14 2003 14:19:24 Derek Hammer
derek.hammer@nrl.navy.mil
Hello, I have reviewed all of the recent claims and I can only 

confirm John's C3 comet.

Bo, welcome to SOHO/LASCO comet hunting. There is no real object
at the positions you give. In fact, I can only see noise (cosmic
rays) near your first two positions. Since you are new, please
review all of the information provided at the "Found Something?"
link on this page. This information is written specifically to
help new observers. It is difficult to explain to a beginner why
their claim is false until you begin to observe past comets so
that you can familiarize yourself with the typical speed,
appearance, and location of the comets we observe. Once you have
observed past comets you will understand why your object is not
a comet. Please email me with any questions. Good luck.


Dave, the object you are referring could never be distinguished
above noise and doesn't even move uniformly over the period in
question. As you know, there are limited resources available for
the comets so please do not waste this limited time on these types
of extremely faint archive claims which could never yield any
real scientific value, but only add to an already large dataset of
Kreutz comets. Last, please review the correlation between your
claims which use the phrase "requires high magnification" and the
resulting number of real comets confirmed. It will be near zero
and it's not a coincidence.


SOHO# Discoverer Dates Camera
=================================================
642 J. Sachs 03/07/13 C3



Please remember that SOHO is rolled by 180 degrees.
Therefore, stars and planets will move from right-to-left and the
expected position of our comets will rotate by 180. SOHO will
be rolled for probably a few months until it enters the next
"blackout" keyhole of its orbit (SOHO moves in a 6 month orbit
about the L1 Lagrangian point). The good news is that the expected
blackouts will be less dramatic than originally thought. You can
follow the status of SOHO through the "SOHO Home Page" and
"SDAC Home Page" links provided at left.

Please email me with any questions.

Derek
Jul 14 2003 22:44:20 Bo Zhou
xpzhoubo@tom.com
Possible comet in C2 at 2003/07/14 UT


512x512 gifs,

0,0 in upper left corner

Time X , Y
__:__ ___,___
1845 506,348
1944 500,349
2054 494,349
2146 488,350
2157 488,350
2217 488,350
2239 483,351
2330 478,351
2354 477,351

--------------
Bo Zhou
Jul 14 2003 23:31:41 XingMing Zhou
zh_x_m@hotmail.com
Hi,Bo,

only a star!
'Please remember that SOHO is rolled by 180 degrees.'
Derek has just reminded us!

XingMing
Jul 15 2003 00:53:47 Bo Zhou
xpzhoubo@tom.com
Sorry everyone,

I disregard my post of Jul 14 2003 22:44:20
----------------
Bo Zhou
Jul 16 2003 10:33:54 Heiner Otterstedt
heiner@otterstedt.de
Possible comet in LASCO C3 images


Date: Wednesday, July 16, 2003

Positions: 1024x1024 images, (0,0) upper left

yyyy.mm.dd hh:mm x y
---------- ----- ---- ----
2003.07.16 11:18 224 244
2003.07.16 11:42 225 248
2003.07.16 12:18 225 251
2003.07.16 12:42 226 255

Regards,
Heiner Otterstedt
Jul 16 2003 11:10:29 Heiner Otterstedt
heiner@otterstedt.de
Sorry about my previous post!

There is nothing there in the following images.

Heiner
Jul 18 2003 10:10:22 John Sachs
imagephoto@blazenet.net
Possible Kreutz Comet  C3

Positions: (0,0) upper left, 1024x1024
Date Time (x, y)
2003/0/07/18 C3 11:42 679 717
2003/0/07/18 C3 11:42 684 724
2003/0/07/18 C3 11:42 686 727
2003/0/07/18 C3 11:18 689 732

John
Jul 18 2003 10:12:10 John Sachs
imagephoto@blazenet.net
Possible Kreutz Comet  C3

Positions: (0,0) upper left, 1024x1024
Date Time (x, y)
2003/0/07/18 C3 12:42 679 717
2003/0/07/18 C3 11:42 684 724
2003/0/07/18 C3 10:42 686 727
2003/0/07/18 C3 10:20 689 732

John
Jul 18 2003 10:20:01 John Sachs
imagephoto@blazenet.net
Update

Sorry my post should read
Possible Kreutz Comet C3
Positions: (0,0) upper left, 1024x1024
Date Ti (x, y)
2003/0/07/18 C3 12:42 679 717
2003/0/07/18 C3 11:42 684 724
2003/0/07/18 C3 11:18 686 727
2003/0/07/18 C3 10:42 689 732
John
Jul 18 2003 10:35:30 John Sachs
imagephoto@blazenet.net
My post below of Jul 18 2003 10:20:01

Is for July 18th 2003
John
Jul 18 2003 11:32:34 Maik Meyer
maik@comethunter.de
Confirmation of John's Kreutz comet in C3.


Maik
Jul 18 2003 23:43:58 William Logan
wb9sat@cybertrails.com
Possible comet located on far left side?

observations:
2003/07/18/17:42UT
2003/07/19/00:42UT
Thanks
Bill Logan
Jul 18 2003 23:45:42 William Logan
wb9sat@cybertrails.com
Ooops!  Forgot to mention possible comet find was on C3.

Bill
Jul 19 2003 02:48:28 Maik Meyer
maik@comethunter.de
Bill,


please be sure to read the rules for posting possible comet
suspects. This means at least _four_ x and y positions in
_consecutive_ images. The suspect has to be _consistent in
shape and brightness_ and has to move in 90% of all cases on
known trajectories depending on the time of year.

If you had read the page from where you posted you would have
seen that often planets and stars mimic comets and that the
very bright object entering the C3 field of view is Venus (which
enters the FOV from right to left) by following the link
"C3 transits". I guess you meant Venus but without coordinates
no one can check anything.Be sure to follow the rules before
making another posting. Please direct questions and discussions
to the "sohohunter" yahoogroup mailing list.

Thank you and good luck, Maik
Jul 19 2003 22:25:59 John Sachs
imagephoto@blazenet.net
Possible Kreutz Comet  C3

Positions: (0,0) upper left, 1024x1024
Date Time (x, y)
2003/07/20 C3 02:18
2003/07/20 C3 01:42 797 817 bw enlarged
2003/07/20 C3 00:42 799 820
2003/07/20 C3 00:18 802 822
John
Jul 19 2003 23:30:39 John Sachs
imagephoto@blazenet.net
Update

Possible Kreutz Comet C3
Short tail. Apears may be companion
to the right of comet very at x797y 811
in frame 0:242 About 4 pixels to right
of main comet.
Positions: (0,0) upper left, 1024x1024
Date Time (x, y)
2003/07/20 C3 02:42 793 811
2003/07/20 C3 02:18 795 814
2003/07/20 C3 01:42 797 817
2003/07/20 C3 00:42 799 820
2003/07/20 C3 00:18 802 822
John
Jul 20 2003 02:38:27 Tony Hoffman
tonyhoffman@earthlink.net
I can confirm John's first claim.


--Tony
Jul 20 2003 10:48:49 John Sachs
imagephoto@blazenet.net
My 2 posts below for

Jul 19 2003 23:30:39 and
Jul 19 2003 22:25:59
were only for the main comet.But
about 4 pixels to the right
of the coma may be a second object.
John
Jul 21 2003 05:07:44 John Seach
john@volcanolive.com
Possible new comet in C3 b/w images.

512 x 512 0,0 in upper left corner.

Date Time x y
20030721 0742 195 203
20030721 0818 198 206
20030721 0842 200 208

John Seach
Jul 21 2003 05:29:17 John Seach
john@volcanolive.com
Update: Possible new comet in C3 b/w images.

512 x 512 0,0 in upper left corner.

Date Time x y
20030721 0742 195 203
20030721 0818 198 206
20030721 0842 200 208
20030721 0918 204 211

John Seach
Jul 21 2003 05:37:05 Maik Meyer
maik@comethunter.de
John,


this is John Sachs' Kreutz comet, reported yesterday. Remember,
b/w images are flipped by 180 deg. The processed images are
oriented correctly. Your coordinates agree with John Sachs' comet
when multiplied by two and substracted from 1024.

Maik
Jul 21 2003 06:55:22 Bo Zhou
xpzhoubo@tom.com
Possible comet in C2 at 2003/07/21 UT


512x512 gifs,

0,0 in upper left corner

Time X , Y
__:__ ___,___
0930 507,405
0954 496,394

--------------
Bo Zhou
Jul 21 2003 07:43:44 XingMing Zhou
zh_x_m@hotmail.com
Bo,

This is Sachs' Kreutz comet.



Jul 29 2003 13:27:01 Derek Hammer
derek.hammer@nrl.navy.mil
TEST
Jul 29 2003 14:49:43 Bo Zhou
xpzhoubo@tom.com
Possible comet in C3 at 2003/07/24 UT

512x512 gifs,
0,0 in upper left corner

Time X , Y
__:__ ___,___
1342 348 324
1242 350 327
1218 352 328
1142 354 330
1118 355 331
1142 357 333

--------------
Bo Zhou
Jul 29 2003 15:16:41 Maik Meyer
maik@comethunter.de
Bo,


this was already reported by X.-M. Zhou (SOHO-645). Please refer
to recent messages in the sohohunter yahoogroup for the
confirmation message.

Regards, Maik
Jul 29 2003 15:44:53 Bo Zhou
xpzhoubo@tom.com
Maik:

Thank you!

Bo Zhou
Jul 30 2003 08:40:09 John Sachs
imagephoto@blazenet.net
 Oculting arm lower left 

Possible Kreutz Comet C3
Positions: (0,0) upper left, 1024x1024
Date Time (x, y)

2003/07/30 C3 06:51 359 497
2003/07/30 C3 06:18 355 493
2003/07/30 C3 05:42 349 488
2003/07/30 C3 05:18 447 485
John
Jul 30 2003 08:49:32 John Sachs
imagephoto@blazenet.net
My last post should have read

BXW enlarged
Oculting arm lower left
Possible Kreutz Comet C3
Positions: (0,0) upper left, 1024x1024
Date Time (x , y)

2003/07/30 C3 06:51 359 497
2003/07/30 C3 06:18 355 493
2003/07/30 C3 05:42 351 488
2003/07/30 C3 05:18 347 485
John
Jul 30 2003 08:57:54 John Sachs
imagephoto@blazenet.net
Also the frame 06:51 is 06:42 below

2003/07/30 C3 06:42 359 497
Sorry
John
Jul 30 2003 09:45:54 mike boschat
mboschat@eastlink.ca
I can confirm John Sach's

C3 comet find.

Mike boschat
Jul 30 2003 13:36:51 Derek Hammer
derek.hammer@nrl.navy.mil
Hello all,


Welcome back to the website and I apologize for the delay. If you
were not following the comet confirmations at the yahoo comet
group site then you missed three confirmations....

SOHO# Discoverer Dates Camera
=================================================
643 J. Sachs 03/07/18 C3
644 J. Sachs 03/07/20-21 C2,C3
645 X.-M. Zhou 03/07/24 C3


In addition, I can confirm another Kreutz comet claimed first
by M. Boschat, who reported this comet well ahead of John,
XingMing, and DongHua.

SOHO# Discoverer Dates Camera
=================================================
646 M. Boscaht 03/07/25-26 C3


I am waiting for more images to confirm/deny John's report of a
C3 comet in today's image. Mike, even if John's claim turns out
to be real, I believe a confirmation was premature considering:
(1) it's a C3 claim with only 4 positions, (2) it seems quite
displaced in the y-direction for a kreutz object at this time of
year, and (3) the object that is being claimed is very dim.


Derek