| Sep 01 2001 11:48:14 |
Scarmato Toni
xxx@xxx |
Possible comet in C2 images:
Positions 512x512 (0,0) top-left corner:
2001/08/31 22:30 (509,415)
2001/08/31 22:35 (507,413)
2001/08/31 22:45 (503,409)
2001/08/31 22:50 (501,407)
Comment: faint object moving on a apparent Kreutz orbit.
Regards,
Toni Scarmato
|
Sep 01 2001 14:05:45 |
Sebastian Hoenig
xxx@xxx |
No comet visible at Toni's positions.
Regards, Sebastian |
Sep 02 2001 02:46:37 |
Maik Meyer
xxx@xxx |
Bright sungrazer in C3 images of 2001/09/02 starting from 05:40 UT.
Coordinates in next post.
Regards
Maik
|
Sep 02 2001 03:05:00 |
Maik Meyer
xxx@xxx |
I withdraw my last report. Beginners fault. I guess I was far too
long out of this business.
Maik
|
Sep 03 2001 06:07:09 |
Sebastian Hoenig
xxx@xxx |
BRIGHT C3 sungrazer in LASCO C3 b/w images, starting 9:25 UT
Right corner
Positions next post.
Sebastian Hoenig |
Sep 03 2001 06:13:47 |
Sebastian Hoenig
xxx@xxx |
Update: Positions and description
BRIGHT sungrazer in LASCO C3 b/w images, starting 20010903_0925
Date: Sep 03, 2001
Description:
Bright comet, elongated, tail visible, perhaps it will get as
bright as SOHO-6 - or even brighter!!!
Positons: (0,0) upper left, positions extrapolated to 512x512
Time (x,y)
09:25 470,379
09:40 469,378
09:55 468,377
More positions when available.
Doug: I told you I will do my best to deliver...
Sebastian Hoenig |
Sep 03 2001 06:34:37 |
Sebastian Hoenig
xxx@xxx |
Update #2: Positions and description
For all those who have not the ability to download b/w images (or
who just didn't download the mentioned ones) I have produced
an image and an animation at www.sungrazer.org/sep03.html
Sebastian Hoenig |
Sep 03 2001 07:10:32 |
Sebastian Hoenig
xxx@xxx |
Update #3: More Positions, last update
Positons: (0,0) upper left, positions extrapolated to 512x512
Time (x,y)
09:25 470,379
09:40 469,378
09:55 468,377
10:25 466,376
10:40 465,375
10:55 464,374
Sebastian Hoenig |
Sep 04 2001 03:58:32 |
Terry Lovejoy
xxx@xxx |
I haven't seen anyone confirm Sebastian's comet - so I'll do it.
Very clear at magnitude 4/5 even though its near the edge of
the C3 field. Agree with Sebastion that it could become
very bright.
Doug, I hope you are satisfied now (refer to August 31 note).
regards
Terry Lovejoy
|
Sep 04 2001 09:14:17 |
Doug Biesecker
xxx@xxx |
Hi everyone,
As you no doubt know, we are finally getting the data in
and we can see how bright this comet ended up being. I agree,
quite bright, but let's hope it doesn't saturate.
Anyway, we'll get on this one as soon as all the data
are processed.
Doug |
Sep 04 2001 09:27:30 |
Scarmato Toni
xxx@xxx |
VERY WELL!!!!!
Congratulations Sebastian.
I saw now your 9th comet in C3.
Is very brigth.
Toni |
Sep 04 2001 09:50:09 |
michael boschat
xxx@xxx |
Fragment folloing sungrazer in C3 images - 20010903_ UT
****** NOTE ******
x-coordinates are probably correct,
but y-coordinates may be off by
several pixels.
0,477 in lower left corner
LASCO C3 IMAGES
Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20010903_1055.gif 512 x 512 468, 346
20010903_1125.gif 512 x 512 466, 344
20010903_1140.gif 512 x 512 465, 344
20010903_1155.gif 512 x 512 463, 343
----------------
Michael Boschat
|
Sep 04 2001 10:28:55 |
Scarmato Toni
xxx@xxx |
Possible fragment at left of the C3 comet at positions:
2001/09/03 15:55 (458,372)
2001/09/03 16:25 (545,369)
2001/09/03 16:40 (452,367)
2001/09/03 16:55 (449,366)
Toni Scarmato |
Sep 04 2001 10:41:36 |
Maik Meyer
xxx@xxx |
Re: Mike B's and Toni's "fragment":
I can see absolutely _nothing_ in the 1024 images at the indicated
positions.
Btw, the the comet shows a nice long tail in the 14:25 UT b/w
image. Still some way to go so chances are good for a beautiful
display.
Maik
|
Sep 04 2001 10:42:49 |
Scarmato Toni
xxx@xxx |
Sorry for the error.
This is the correct set of positions:
2001/09/03 15:55 (458,372)
2001/09/03 16:25 (454,369)
2001/09/03 16:40 (452,367)
2001/09/03 16:55 (449,366)
Commnet:
I am not been able verify if it is the same object
of M. Boscath.
Toni
|
Sep 04 2001 10:47:13 |
terry lovejoy
xxx@xxx |
I have put a animated gif of the bright SOHO comet at my website
(http://members.ozemail.com.au/~lovejoyt/southern.htm).
It contains most of the frames from Sep 3, 13h 55m to Sep 4, 8h25m.
Beware it is 0.5MB and also requires a fair bit of RAM.
Terry Lovejoy
|
Sep 04 2001 11:30:52 |
Doug Biesecker
xxx@xxx |
Just a quick note. I've not seen any 'secondary' fragments. It
seems there may be some variation along the tail of the comet,
but unless it's very significant, it will take detailed study
to determine if it's real. The pixel to pixel variation in the
CCD can easily cause false 'fragments' or variations.
We're getting excellent data on this one.
Doug |
Sep 04 2001 11:53:34 |
Scarmato Toni
xxx@xxx |
At 2001/09/04 15:45 the comet entered in C2 FOV.
Coma very brigth.
Toni Scarmato |
Sep 04 2001 11:57:05 |
xavier Leprette
xxx@xxx |
The Hoenig's comet is coming in C2 now at 15:50 UT. Very nice
long tail.
Xavier Leprette |
Sep 04 2001 15:22:49 |
Donn Appleby
xxx@xxx |
I was observing the C3 animations for September 3rd and 4th and see in the 4 oclock position what appears to be a comet trasiting towards the Sun!
Donn Appleby
xxx@xxx |
Sep 04 2001 17:20:16 |
Doug Biesecker
xxx@xxx |
Hi all,
Donn, that comet is the one S. Hoenig reported Monday morning.
The comet is now through the FOV and hidden behind the occulter.
We got lots of good data. Now I can add it to my list of projects.
Hey, maybe it'll come back out. Yea, right.
Anyway, how about one more in the next fortnight?
Doug |
Sep 05 2001 02:04:48 |
Maik Meyer
xxx@xxx |
Real-time C3 comet in 2001/09/05 images starting from 04:42 UT.
Positions next post.
Maik
|
Sep 05 2001 02:20:26 |
Maik Meyer
xxx@xxx |
Positions for possible current real-time comet in C3.
1024x1024, (0,0) upper left
Date 2001/09/05
Not sure about 01:42 and 00:42 UT images, so no positions are given, next C3 should be taken at 06:42 UT.
04:42 748, 619
05:18 741, 614
05:42 736, 610
Maik
|
Sep 05 2001 03:00:24 |
Maik Meyer
xxx@xxx |
Confirmation & Update:
The 06:42 UT image shows the comet at the expected position.
Intensive search in the 01:42 and 00:42 images revealed nothing.
Available positions so far:
2001/09/05, C3, 1024x1024, (0,0) upper left
UT X Y
04:42 748, 619
05:18 741, 614
05:42 736, 610
06:42 724, 602
Maik
|
Sep 05 2001 03:13:25 |
Scarmato Toni
xxx@xxx |
Possible comet in C3 real-time images.
Positions 512x512 (0,0) top-left corner:
2001/09/05 04:42 (374,309)
2001/09/05 05:18 (371,306)
2001/09/05 05:42 (368,305)
Comment: object moving toward the sun not too brigth but
well visible.
I am waiting other images to confirm.
Regards,
Toni Scarmato |
Sep 05 2001 03:23:11 |
Scarmato Toni
xxx@xxx |
Regarding my last post, the object seem followed by
another object at positions:
512x512 (0,0) top-leftc corner
2001/09/05 04:42 (380,311)
2001/09/05 05:18 (377,309)
2001/09/05 05:42 (375,307)
Comment: object faint at rigth of the first "comet" in agreement with the shift and time interval.
Toni Scarmato |
Sep 05 2001 03:43:16 |
Sebastian Hoenig
xxx@xxx |
Confirmation of Maik's object. Nice little comet.
No following fragment observed at Toni's positions.
Regards, Sebastian |
Sep 05 2001 03:56:46 |
Scarmato Toni
xxx@xxx |
I can confirm on image at 06:40 the comet reported
by Maik.
Also, I continue to see the second object
on 512 pixels image at position:
2001/09/05 06:42 (371,303).
Regards,
Toni
|
Sep 05 2001 07:53:34 |
Doug Biesecker
xxx@xxx |
Hi Everyone,
I can confirm the comet reported by M. Meyer. It is
currently visible in C3 real-time data. Rough positions given
below.
As far as the T. Scarmato posts. There is nothing apparent
at the positions of the first object reported. The second object
reported is the same comet M. Meyer reported earlier in posts at
02:04 and 02:20.
Doug
#COMMENT: COMET SOHO-348
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
15.14 2001/09/05 04:42:09 241.4 C3 10 748.0 405.0
14.62 2001/09/05 05:18:05 241.9 C3 10 741.0 411.0
14.28 2001/09/05 05:42:05 241.9 C3 10 736.0 414.0
13.39 2001/09/05 06:42:09 242.1 C3 10 723.0 422.0
12.56 2001/09/05 07:42:42 242.5 C3 10 711.0 430.0
11.18 2001/09/05 09:18:05 243.2 C3 10 691.0 443.0
10.72 2001/09/05 09:42:05 243.3 C3 10 684.0 447.0
|
Sep 05 2001 08:48:49 |
Doug Biesecker
xxx@xxx |
Hello again,
An update on an old matter. We have finally confirmed
the comet reported by R. Kracht back on Aug 21, 2001. It is
a non-Kreutz comet, apparent magnitude of 8-8.5.
For those who keep track of numbers: here's the way we
are numbering the latest comets. This is in keeping with
numbering the comets in order of discovery. Note, some of you
may have noticed that some comets reported this year were not
numbered in this way. We do not plan to change any of the earlier
numbering.
SOHO # Date Tel Discoverer
345 01/08/21 C2 R. Kracht
346 01/08/25-26 C2,C3 C. Dong
347 01/09/3-4 C2,C3 S. Hoenig
348 01/09/05 C3 M. Meyer
Doug |
Sep 05 2001 09:46:59 |
michael boschat
xxx@xxx |
OFF Topic on comet by Myer.
Where is it?? Don't tell me it's the object
heading towards the "dark" speck on
the C3.
( ) disk
* - speck
# - comet?
Mike Boschat |
Sep 05 2001 15:05:14 |
Doug Biesecker
xxx@xxx |
Yes, the M. Meyer comet (SOHO-348) passed just underneath the
'black spot' (bad pixel) on the C3 images.
Doug |
Sep 05 2001 23:48:14 |
Tony Hoffman
xxx@xxx |
Possible comet in C3 realtime images
(1024 x 1024, 0,0 in upper left corner)
2001/09/05
2342 992, 686
2001/09/06
0042 983, 683
0142 973, 680
0218 962, 676
Fairly diffuse.
--Tony Hoffman
|
Sep 06 2001 07:57:00 |
Tony Hoffman
xxx@xxx |
My last time was incorrect, it should have been 2:42 instead of 2:18. But no matter; there is nothing compelling enough in the most recent images to convince me this is really a comet. Alas, report withdrawn.
--Tony Hoffman |
Sep 07 2001 07:32:07 |
Lovejoy Terry
xxx@xxx |
For all those interested:
There is a new high resolution mpeg animation of SOHO-347
on my webpage at:
http://members.ozemail.com.au/~lovejoyt/southern.htm
Terry Lovejoy |
Sep 07 2001 10:10:30 |
michael boschat
xxx@xxx |
Possible sungrazer in C2 images - 20010907_1031 UT
Not sure, very, very small dot
coming from logo area.
****** NOTE ******
x-coordinates are probably correct,
but y-coordinates may be off by
several pixels.
0,477 in lower left corner
LASCO C2 IMAGES
Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20010907_1031.gif 512 x 512 462, 441
20010907_1106.gif 512 x 512 463, 436
20010907_1231.gif 512 x 512 461, 432
20010907_1254.gif 512 x 512 458, 428
----------------
Michael Boschat
|
Sep 08 2001 12:02:40 |
XingMing Zhou
xxx@xxx |
Possible sungrazer comet in real-time C2 images now.
with a tail.
0,0 in upper left corner
Images Size X, Y
20010908_1331_c2.gif 512 x 512 466, 462
20010908_1354_c2.gif 512 x 512 453, 451
20010908_1406_c2.gif 512 x 512 446, 445
XingMing Zhou |
Sep 08 2001 12:15:16 |
michael boschat
xxx@xxx |
I can confirm XingMing Zhou
comet in C2. Coming from the "N" in NRL
Mike Boschat |
Sep 10 2001 12:58:29 |
Xavier Leprette
xxx@xxx |
Possible sungrazing comet in a real-time C3 images now.
It is visible from 2001/09/10 from 14:42 to 15:42 UT in 3 consecutive frames,
at South-West quadrant. The suspect object is moving towards the sun.
I'm waiting other images to confirm my report.
Coordinates in a next e-mail.
Xavier Leprette
|
Sep 10 2001 13:22:55 |
Xavier Leprette
xxx@xxx |
Sorry, I cannot confirm my last report.
Xavier Leprette |
Sep 10 2001 14:41:31 |
Doug Biesecker
xxx@xxx |
I can confirm the report of X. Zhou of a comet visible in C2
on Sept 8, 2001. The comet was also visible in C3, earlier in
the day, with a short tail evident. I'm somewhat surprised
nobody picked this one up in C3. I guess you were all busy
on Saturday. Preliminary positions are given below. I've not
yet checked all of the other reports, though the lack of
follow-ups leads me to suspect that none of them turned out to
be real. By the way, this makes the comet count 349!
Doug
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
14.71 2001/09/08 05:18:14 228.5 C3 11 709.0 362.0
14.34 2001/09/08 05:42:06 228.8 C3 11 705.0 367.0
13.48 2001/09/08 06:42:09 228.5 C3 11 693.0 376.0
12.61 2001/09/08 07:42:40 228.6 C3 11 682.0 386.0
11.71 2001/09/08 08:42:11 228.4 C3 11 670.0 396.0
10.89 2001/09/08 09:42:05 228.3 C3 11 659.0 405.0
9.82 2001/09/08 10:44:16 228.1 C3 11 645.0 417.0
9.33 2001/09/08 11:18:05 227.8 C3 11 638.0 422.0
7.76 2001/09/08 12:54:39 226.2 C2 10 971.0 65.0
7.12 2001/09/08 13:31:51 225.8 C2 10 930.0 100.0
6.70 2001/09/08 13:54:05 225.7 C2 10 904.0 124.0
6.49 2001/09/08 14:06:05 225.5 C2 10 890.0 135.0
|
Sep 10 2001 16:02:50 |
David Johnson
xxx@xxx |
Possible comet with what appears to be a short tail component,
seen in at least 5 1024x1024 C3 images. 0,0 is at upper left:
20010910_1842_c3.gif - 740,619
20010910_1718_c3.gif - 755,629
20010910_1642_c3.gif - 763,634
20010910_1542_c3.gif - 773,641
20010910_1518_c3.gif - 780,645
David E. Johnson |
Sep 10 2001 17:39:54 |
Michael Oates
xxx@xxx |
This is my confirmation that David Johnson has found a
possible Kreutz sungrazer. It can be seen from in C3 images
from 14:42 to 20:42 getting brighter, short tail seen.
Regards
Mike |
Sep 11 2001 11:46:00 |
Scarmato Toni
xxx@xxx |
Suspect object in C3 images.
Positions 512x512 (0,0) top-left corner:
2001/09/11 00:42 (404,310)
2001/09/11 01:42 (397,307)
2001/09/11 02:42 (390,304) brigth
Comment:
The object move toward the sun at rigth of the comet
reported yesterday.
I am waiting other images to confirm.
Regards,
Toni Scarmato
|
Sep 11 2001 12:01:08 |
Doug Biesecker
xxx@xxx |
Hi everyone. Goddard is now closing. We don't know when we will
reopen. Be advised that due to the current situation, DSN coverage
and SOHO data may be interrupted.
Doug |
Sep 11 2001 12:01:27 |
Scarmato Toni
xxx@xxx |
Sorry!
No consider my last report.
Only noise.
Toni
|
Sep 12 2001 12:00:28 |
Xavier Leprette
xxx@xxx |
A possible sungrazer comet in a real-time C2 B/W images now.
The object, bright with a short tail seems obvious in one image only on 2001/09/11
at 21:08 UT on the left of the logo. The suspect is moving towards the sun.
I'd rather wait color images to confirm my report and give
accurate positions.
Doug,I'm confused to send a report with the current evenements in USA.
Xavier Leprette |
Sep 12 2001 13:13:39 |
Sebastian Hoenig
xxx@xxx |
Just a quick note on Xavier's report:
Xavier, I have tried to examine the object in earlier C3 images
because with that brightness I should have been visible there. I
could not find anything moving on that orbit. So that together
with a non-Kreutz position I think it is only a cosmic ray streak.
Doug, you have all my sorrows on what happened yesterday. Deepest
sympathy for all victims, their family and friends and all
Americans who are shocked on that horrible attack. I hope you as
well as your family, friends and all the other SOHO members have
went through yesterday without any physical damage.
Regards, Sebastian |
Sep 13 2001 08:24:38 |
Doug Biesecker
xxx@xxx |
I want to thank everyone for their expressions of sympathy.
We are grateful for the concern shown by people worldwide.
Thankfully, as far as I'm aware, no one I know was affected
by any of the incidents.
Doug
|
Sep 13 2001 09:08:29 |
Doug Biesecker
xxx@xxx |
The comet reported by D. Johnson, was visible in both the C3 and
C2 telescopes. For those who got my e-mail, obviously it was not
over the weekend that it was reported. My error. Anyway, that
makes it 350 comets for SOHO. Rough positions given below.
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
16.39 2001/09/10 16:42:09 240.2 C3 11 764.0 389.0
16.00 2001/09/10 17:18:05 240.1 C3 11 758.0 392.0
15.56 2001/09/10 17:42:06 239.9 C3 11 751.0 395.0
14.77 2001/09/10 18:42:09 240.2 C3 11 740.0 403.0
13.91 2001/09/10 19:42:10 240.6 C3 11 728.0 412.0
13.02 2001/09/10 20:42:09 240.8 C3 11 715.0 420.0
10.60 2001/09/10 23:18:41 241.7 C3 11 680.0 443.0
10.24 2001/09/10 23:42:05 242.0 C3 11 675.0 447.0
9.28 2001/09/11 00:42:10 242.5 C3 11 661.0 456.0
6.91 2001/09/11 03:06:05 242.8 C2 10 1014.0 246.0
6.50 2001/09/11 03:30:05 243.1 C2 10 985.0 264.0
Doug
|
Sep 15 2001 09:27:07 |
Scarmato Toni
xxx@xxx |
Possible comet in real-time images
C3 positions 512x512 (0,0) top-left corner:
2001/09/15 05:18 (324,275)
2001/09/15 05:42 (322,274)
C2 positions 512x512 (0,0) top-left corner:
2001/09/15 05:30 (494,326)
2001/09/15 05:54 (507,337
Commnet:
I am not able to find the object in other C3 images.
I am waiting other C2 iamges to confirm.
Regards,
Toni Scarmato |
Sep 15 2001 12:00:07 |
Michael Oates
xxx@xxx |
Toni, sorry, but I can't see anything at the positions
you indicate. In the C2 images for those times I can see two
points that you may/or may not be refering to, but are not at
the positions you gave, these are:
(0,0 in top left corner in 1024x1024 images)
Col Row
20010915_0530_c2.gif 1023 672
20010915_0554_c2.gif 987 651
These are diffuse and may possibly be a comet. The velocity is 1.08 pixels/min in the X direction which is a good fit, but I
would not post a report with just these two positions. Against
this, is that the first point has a bit of noise associated with
it and the second point is slightly brighter.
I want to offer some tips, this is for anyone looking for comets
in the real-time GIF images:
1) Look at the 1024 size images if you are not sure of an object
before posting a report.
2) I advise against any further processing to the GIF images.
They are at their optimal, any further processing such as
contrast enhancement will only exaggerate the noise in the
image and produce false objects.
Regards
Mike |
Sep 15 2001 12:13:56 |
Scarmato Toni
xxx@xxx |
Sorry!!
OK, Mike
I Have inverted the time.
This is the set correct:
C2 positions 512x512 (0,0) top-left corner:
2001/09/15 05:30 (507,337)
2001/09/15 05:54 (494,326)
Regards,
Toni
|
Sep 15 2001 12:37:29 |
hua su
xxx@xxx |
Toni,I can see you object in C2,but don't confirn it's a comet,I see a shadiness object at C2:(512X512)
20010915_0530_c2.gif 165,34
20010915_0554_c2.gif 159,45
suhua
china
|
Sep 15 2001 12:51:32 |
Sebastian Hoenig
xxx@xxx |
Something other that is against Toni's C2 object:
It is slightly too far to the north for this time of year (~100
pixels in y direction).
I completely share Mike's opinion. I also have only a slow
connection (56k) but I take the time to download 1024 images
if I am not sure (and if they are available). It takes one not
longer than 4 minutes for two images - time that avoids false
reports.
Regards and happy weekend.
Sebastian |
Sep 15 2001 15:21:58 |
michael boschat
xxx@xxx |
Re-Mike Oate's comments:
I do not have high speed internet anymore and
now use a 56k modem, thus I will use the 512 images.
I have to enlarge the 512 to a 1:2 ratio and loop them.
Only in extreme cases will I download 1024 sizes
and at 900k, it takes a long time.
I guess the simple solution would be for those with
slow connections not to do searching anymore. That way
the ones that use 2-3 computers and fast connections
will not have any false reports and be able to discover
the sungrazers faster.
Mike B. |
Sep 15 2001 18:30:06 |
terry lovejoy
xxx@xxx |
Just a quick note regarding 1024 vs 512 pixel images.
I have almost always used 1024 images - and when I started
searching I was using a 56K dialup connection. I now use a
512K connection.
With the dialup connection I discovered about a dozen
comets in 1024x1024 images. HOWEVER, with the faster connection
I have not found any comets!
If download time is a problem use a free download managing
program like gozilla or download accelerator (recommended).
These programs make it very convenient to download mutliple
files while you go a do something else.
Regards,
Terry
|
Sep 17 2001 08:45:41 |
Rainer Kracht
xxx@xxx |
unsual object in C2 image 2001 09 16 10:56
looks like a thin line from 527/1023 to 212/781
with some regular(?) flashes along the line
(0/0) in upper left corner
it doesn't look like a cosmic ray
debris? close to SOHO?
what is it?
|
Sep 17 2001 09:06:45 |
Maik Meyer
xxx@xxx |
Rainer,
almost definitely a cosmic ray streak.
Maik
|
Sep 17 2001 10:17:23 |
Doug Biesecker
xxx@xxx |
Hi everyone,
Thanks for all of the useful posts. I have not been able
to confirm any of the recent claims. Most of these recent
claims have very few images. That's not a good sign.
Doug |
Sep 18 2001 13:21:22 |
Xavier Leprette
xxx@xxx |
Possible archive comet sungrazer in C3 images from 21 January 1996
The suspect object is very faint, fuzzy, with a short tail.
It is visible at least in 19 consecutive images.
Positions with 0,0 at bottom left in 1024x1024 images :
Images X Y time date
32003250.fts 308 401 08:24:58.899 21 january 1996
32003252.fts 315 407 09:08:34.174 21 january 1996
32003254.fts 322 414 09:52:11.648 21 january 1996
32003256.fts 329 419 10:35:47.823 21 january 1996
32003258.fts 335 425 11:18:24.298 21 january 1996
32003260.fts 342 431 12:02:00.273 21 january 1996
32003262.fts 349 438 12:45:11.748 21 january 1996
32003264.fts 357 444 13:28:49.223 21 january 1996
32003266.fts 365 451 14:12:31.197 21 january 1996
32003268.fts 373 457 14:56:02.873 21 january 1996
Xavier Leprette
|
Sep 19 2001 08:43:27 |
Doug Biesecker
xxx@xxx |
Wow, another good archive find. Congratulations Xavier! At the
time of the observations, we were only taking images with the
C3 telescope, as we were still in the commissioning phase of the
mission. In fact, if you look at the images themselves, you'll
see that every other image is overexposed. My rough positions
are given below.
Doug
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
14.13 1996/01/21 08:04:37 122.1 C3 10 306.0 397.0
13.83 1996/01/21 08:24:58 121.5 C3 10 309.0 402.0
13.67 1996/01/21 08:48:09 121.4 C3 10 311.0 404.0
13.36 1996/01/21 09:08:34 121.1 C3 10 315.0 408.0
13.06 1996/01/21 09:31:46 121.3 C3 10 320.0 410.0
12.91 1996/01/21 09:52:11 121.1 C3 10 322.0 412.0
12.64 1996/01/21 10:15:23 120.6 C3 10 325.0 416.0
12.38 1996/01/21 10:35:47 120.1 C3 10 328.0 420.0
12.13 1996/01/21 10:58:00 120.2 C3 10 332.0 422.0
11.92 1996/01/21 11:18:24 119.6 C3 10 334.0 426.0
11.59 1996/01/21 11:41:33 119.5 C3 10 339.0 429.0
11.31 1996/01/21 12:02:00 119.3 C3 10 343.0 432.0
11.13 1996/01/21 12:24:43 118.9 C3 10 345.0 435.0
10.87 1996/01/21 12:45:11 118.3 C3 10 348.0 439.0
10.57 1996/01/21 13:08:21 118.5 C3 10 353.0 441.0
10.26 1996/01/21 13:28:49 117.9 C3 10 357.0 445.0
9.93 1996/01/21 13:51:55 117.9 C3 10 362.0 448.0
9.78 1996/01/21 14:12:31 117.6 C3 10 364.0 450.0
9.45 1996/01/21 14:35:36 116.7 C3 10 368.0 455.0
9.15 1996/01/21 14:56:02 116.1 C3 10 372.0 459.0
|
Sep 19 2001 11:11:19 |
Doug Biesecker
xxx@xxx |
Hi everyone,
I just noticed that the last 7 discoveries have been by 7
different people. Three of those people were first timers as well.
That's the sort of thing which I really like about this. I hope
you all continue to watch the images. Thankfully, the number of
false claims has been kept low enough to stay off my radar. But,
as always, try to keep them even lower. You are generally doing a
good job of self-policing.
Doug |
Sep 20 2001 19:27:39 |
michael boschat
xxx@xxx |
Possible sungrazer in C3 images - 20010920_2042 UT
****** NOTE ******
x-coordinates are probably correct,
but y-coordinates may be off by
several pixels.
0,477 in lower left corner
LASCO C3 IMAGES
Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20010920_2042.gif 512 x 512 357, 315
20010920_2118.gif 512 x 512 354, 310
20010920_2142.gif 512 x 512 351, 305
20010920_2218.gif 512 x 512 348, 302
----------------
Michael Boschat
|
Sep 21 2001 09:43:56 |
Scarmato Toni
xxx@xxx |
Possible comet ìn C3 images.
Approximate positions 512x512 (0,0) top-left corner
2001/09/20 21:18 (460,430)
2001/09/20 21:42 (459,429)
2001/09/20 22.18 (458,427)
2001/09/20 23:18 (455,424)
Comment: diffuse object moving toward the sun.
No too brigth but well visible in 512 images.
I am waiting other images to confirm.
Regards,
Toni Scarmato |
Sep 21 2001 15:38:36 |
Xavier Leprette
xxx@xxx |
Possible archive comet sungrazer in C3 images from 30 January 1996
The suspect object is faintly bright with a short tail.
It is visible in 4 consecutive C3 frames from 4:00 UT to 7:37 UT
(32003688.fts to 32003691.fts)
Positions in a next message.
Xavier Leprette |
Sep 21 2001 16:15:13 |
Xavier Leprette
xxx@xxx |
Possible archive comet sungrazer in C3 images from 30 January 1996
UPDATE about my previous mail.
The suspect object is faintly bright with a short tail.
It is visible in 4 consecutive C3 frames.
Positions measured from the bottom left corner
in 1024x1024 frames :
Ref. image, X, Y, Time , Date
32003688.fts 338 435 04:00:13.191 30 January 1996
32003689.fts 350 443 05:01:49.856 30 January 1996
32003690.fts 365 455 06:19:36.612 30 January 1996
32003691.fts 379 468 07:37:17.968 30 January 1996
Xavier Leprette |
Sep 21 2001 20:41:02 |
Xavier Leprette
xxx@xxx |
Another possible archive comet sungrazer in C3 images from 29 January 1996
The suspect object is very faint, round and fuzzy without tail.
It is visible in 7 consecutive C3 frames.
Positions measured from the bottom left corner
in 1024x1024 frames :
Ref. image, X, Y, Time , Date
32003645.fts 304 392 08:07 29 January 1996
32003646.fts 307 394 08:27 29 January 1996
32003647.fts 310 397 08:47 29 January 1996
32003648.fts 314 400 09:08 29 January 1996
32003649.fts 316 403 09:28 29 January 1996
32003650.fts 319 405 09:49 29 January 1996
32003651.fts 10:09 29 January 1996
I'm not sure that it is a real object,because the object is very faint, but the moving is coherent.
Xavier Leprette |
Sep 22 2001 15:12:32 |
Michael Oates
xxx@xxx |
Regarding the last two reports by Xavier Leprette:
29 Jan 1996
I can confirm that this is a real comet, most likely a Kreutz
sungrazer. I can see it in a further 13 images from 32003653.fts
to 32003666.fts so it is visible in 19 images in total. For some
reason it does not appear in two images 32003651.fts &
32003652.fts
30 Jan 1996
This is only seen in 4 images, there are missing images prior to
32003688.fts. This does indeed look like a comet, but the 4th
image is very faint and there may not be enough images to get
this confirmed. Having said that, I have looked at the previous
days images and found some which 'may' be the comet...
0,0 bottom left corner in 1024x1024 images pix/min
Image Col Row Time Date Col Row
32003671.fts 232 347 16:53:30.370 1996/01/29
32003672.fts 235 349 17:13:54.158 1996/01/29 0.15 0.10
32003673.fts 239 353 17:34:16.046 1996/01/29 0.19 0.19
32003674.fts 241 355 17:54:45.134 1996/01/29 0.10 0.10
32003675.fts ?
32003676.fts 246 359 18:35:28.612 1996/01/29 0.12 0.10
32003688.fts 338 435 04:00:13.191 1996/01/30 0.16 0.13
32003689.fts 350 444 05:01:49.856 1996/01/30 0.20 0.15
32003690.fts 365 453 06:19:36.612 1996/01/30 0.19 0.12
32003691.fts 381 468 07:37:17.968 1996/01/30 0.21 0.19
These new positions on their own would not be enough to post a
claim, they are very faint and could just be noise, but there
is a good fit for the velocity between the large gap of missing
images.
Well done Xavier
Regards
Michael Oates |
Sep 24 2001 11:33:47 |
Chen Donghua
xxx@xxx |
A suspect object in consecuitive c2 images,
but only three positions.
Positions 1024x1024 (0,0) upper-left corner:
2001/09/24 0030 1014 849
2001/09/24 0054 960 817
2001/09/24 0131 904 788
Chen Dong Hua
|
Sep 24 2001 14:45:25 |
Sebastian Hoenig
xxx@xxx |
Regarding Chen Dong's report:
This is a combination of a star (first image) and noise (last two)
Regards, Sebastian |
Sep 24 2001 19:30:27 |
Chen Donghua
xxx@xxx |
Regrarding my last report, Sebastian is
right. Thanks.
Chen Dong Hua |
Sep 27 2001 04:05:05 |
Scarmato Toni
xxx@xxx |
Possible comet in C3 real-time images.
Positions 512x512 (0,0) top-left corner:
2001/09/27 04:42 (402,371)
2001/09/27 05:42 (399,368)
2001/09/27 06:18 (397,366)
2001/09/27 06:42 (396,364)
Comment: object moving toward the on an apparent Kreutz orbit,
visible in 4 consecutive images.
I am waiting other images to confirm.
Regards,
Toni Scarmato |
Sep 27 2001 04:13:47 |
Scarmato Toni
xxx@xxx |
Regarding my last report, on image at 2001/09/27 07:42
the object is visible at position (394,361), but
is too brigth.
Still I not can confirm.
Toni
|
Sep 28 2001 12:36:45 |
Scarmato Toni
xxx@xxx |
Possible comet on 6 consecutive C3 real-time images.
Positions 512x512 (0,0) top-left corner:
2001/09/28 11:42 (371,438)
2001/09/28 12:18 (369,436)
2001/09/28 12:42 (370,435)
2001/09/28 13:43 (368,432)
2001/09/28 14:18 (367,430)
2001/09/28 14:42 (367,429)
Comment: I have looked the sequence many time,
bu |
Sep 28 2001 12:45:44 |
Scarmato Toni
xxx@xxx |
Sorry, problem due to the connection.
This is my comment:
I have looked the sequence many time,
but I am too doubious on this object.
When I increase the velocity of the sequence
seem that the points are in agreement.
The object is not too brigth and moving on an
apprent Kreutz path.
P.S. regarding the post of yesterday the object
seem to be noise.
Regards,
Toni Scarmato |
Sep 28 2001 15:16:33 |
Michael Oates
xxx@xxx |
Comet in realtime C2 images
Large & diffuse, round with no tail
(0,0 in bottom left corner in 1024x1024 images)
Image Col Row
20010928_1630_c2.gif 994 106
20010928_1654_c2.gif 969 126
20010928_1706_c2.gif 956 136
20010928_1730_c2.gif 929 157
20010928_1754_c2.gif
Michael Oates |
Sep 28 2001 15:40:31 |
Michael Oates
xxx@xxx |
Comet in realtime C2 images - UPDATE
Round & diffuse with no tail. There are no more
images after 18:06
(0,0 in bottom left corner in 1024x1024 images)
Col Row
Image Col Row pix/min pix/min
20010928_1630_c2.gif 994 106
20010928_1654_c2.gif 969 126 1.04 0.83
20010928_1706_c2.gif 956 136 1.08 0.83
20010928_1730_c2.gif 929 157 1.13 0.88
20010928_1754_c2.gif 902 180 1.13 0.96
20010928_1806_c2.gif 889 190 1.08 0.83
Michael Oates |
Sep 28 2001 15:45:21 |
Sebastian Hoenig
xxx@xxx |
Confirmation of Mike's sungrazer. Like in April he found the
nugget within the blizzard.
Regards, Sebastian |
Sep 28 2001 22:33:51 |
Derek Hammer
xxx@xxx |
I also confirm the report by M. Oates of a real-time sungrazer in
C2. Nice find. Additionally, the comet is visible in many C3
images. Here are the rough positions.......
# HEIGHT DATE TIME ANGLE TEL FC COL ROW
18.87 2001/09/28 03:18:05 231.9 C3 10 776.0 328.0
18.62 2001/09/28 03:42:06 232.0 C3 10 773.0 331.0
18.13 2001/09/28 04:18:05 232.2 C3 10 767.0 337.0
17.84 2001/09/28 04:42:05 232.2 C3 10 763.0 340.0
17.34 2001/09/28 05:18:05 232.1 C3 10 756.0 345.0
17.05 2001/09/28 05:42:05 232.1 C3 10 752.0 348.0
16.55 2001/09/28 06:18:05 232.0 C3 10 745.0 353.0
16.26 2001/09/28 06:42:05 232.0 C3 10 741.0 356.0
15.48 2001/09/28 07:42:40 232.2 C3 10 731.0 365.0
15.02 2001/09/28 08:18:06 231.9 C3 10 724.0 369.0
14.61 2001/09/28 08:42:05 232.1 C3 10 719.0 374.0
14.12 2001/09/28 09:18:05 232.0 C3 10 712.0 379.0
13.78 2001/09/28 09:42:07 231.9 C3 10 707.0 382.0
13.25 2001/09/28 10:20:29 232.0 C3 10 700.0 388.0
12.96 2001/09/28 10:42:05 231.9 C3 10 696.0 391.0
12.43 2001/09/28 11:18:05 232.0 C3 10 689.0 397.0
12.06 2001/09/28 11:42:05 232.1 C3 10 684.0 401.0
11.53 2001/09/28 12:18:05 232.2 C3 10 677.0 407.0
11.20 2001/09/28 12:42:32 232.0 C3 10 672.0 410.0
10.26 2001/09/28 13:43:10 231.9 C3 10 659.0 420.0
7.60 2001/09/28 16:30:32 230.5 C2 10 995.0 106.0
7.21 2001/09/28 16:54:05 230.4 C2 10 969.0 126.0
7.01 2001/09/28 17:06:05 230.4 C2 10 956.0 137.0
6.61 2001/09/28 17:30:05 230.3 C2 10 929.0 158.0
6.20 2001/09/28 17:54:05 230.1 C2 10 902.0 179.0
5.98 2001/09/28 18:06:05 230.3 C2 10 889.0 192.0
Derek
|
Sep 29 2001 14:15:43 |
michael boschat
xxx@xxx |
Possible sungrazer in C2 images - 20010929_1530 UT
****** NOTE ******
x-coordinates are probably correct,
but y-coordinates may be off by
several pixels.
0,477 in lower left corner
LASCO C2 IMAGES
Date & UT Size X and Y
of Images used Coordinates
--------------------------------------------
20010929_1530.gif 512 x 512 502, 435
20010929_1554.gif 512 x 512 491, 427
20010929_1630.gif 512 x 512 485, 419
20010929_1730.gif 512 x 512 481, 418
----------------
Michael Boschat
|
Sep 30 2001 04:22:01 |
XingMing Zhou
xxx@xxx |
Possible sungrazer comet in real-time C2 images now.
0,0 in upper left corner
Images Size X, Y
20010930_0606_c2.gif 512 x 512 464, 463
20010930_0630_c2.gif 512 x 512 453, 453
20010930_0654_c2.gif 512 x 512 444, 444
XingMing Zhou |
Sep 30 2001 05:43:04 |
Sebastian Hoenig
xxx@xxx |
Regarding the last two reports:
Both are only combination of noise or cosmic rays. I could not
find a real comet at any of the positions.
Regards, Sebastian |
Sep 30 2001 17:30:04 |
Michael Oates
xxx@xxx |
Comet in archive C3 images from 14 Sept 1996
There was a gap of 3 days with no images, the first image
in this sequence shows the comet quite bright, it then
fades as it gets closer to the Sun. A slight elongation
can be seen but no obvious tail. The 512x512 images are
PW Sequence.
All measured by extrapolating the frames to 1024x1024
(0,0 in bottom left corner)
Image Col Row Format Time Date
32008096.fts 677 417 1024x576 19:18:09.777 1996/09/14
32008097.fts 671 422 1024x576 19:45:05.763 1996/09/14
32008098.fts 664 428 512x512 20:22:09.243 1996/09/14
32008099.fts 663 428 512x512 20:24:04.642 1996/09/14
32008100.fts 662 428 512x512 20:26:52.041 1996/09/14
32008101.fts 662 428 512x512 20:29:39.939 1996/09/14
32008102.fts 658 431 1024x576 20:45:14.131 1996/09/14
32008103.fts 644 442 1024x576 21:47:05.499 1996/09/14
32008104.fts 637 447 1024x576 22:16:06.783 1996/09/14
There is too large a time gap until the next image at
23:45:05.438 and does not show the comet.
Michael Oates |