SOHO Comets/Asteroids/Planets

[EarthlingX]

I prefer this :

sohodata.nascom.nasa.gov : SOHO Movie Theater

I can set range, resolution and do all sorts of things with animation. It is also much easier later, when the current gif is changed. Easy to get images for download also.

Saturn is that bright spot on the top, going from the middle to exit between 2010-09-17 and 2010-09-20 ? I think it came into view around 12th ?

CME on 13th, 14th, 15th ...

 

[MeteorWayne]

No Saturn didn't come into view until late on the 21st.

 

[EarthlingX]

No Saturn didn't come into view until late on the 21st.

Thanks.

Checking on YourSky to get a better idea ...

How much would be LASCO C3 field of view ?

About 20 ?

First time Saturn appearance on 2010-09-21 12:42 ?

 

[MeteorWayne]

Saturn was about 8 degrees east of the sun when it showed up, so it looks like the E-W FOV is about 16-17 degrees.

 

[EarthlingX]

Thanks, i think i know now which one it is

Yea, it seamed like a bit less than 20.

 

[EarthlingX]

Just one more check :
Did Mercury get in the view on 2010-08-31 00:06 with exit on 2010-09-07 18:45 ?

It's 670 images for the whole period, so it might be best to check just starting and ending day, well, for those who know what to look for ..

For convenience :
SOHO Movie Theater

 

[MeteorWayne]

That would be about the right time period, along the bottom of the image, from L -> R? That was inferior conjunction, so was a very thin crescent which makes it seem to appear out of nowhere...

 

[EarthlingX]

That would be about the right time period, along the bottom of the image, from L -> R? That was inferior conjunction, so was a very thin crescent which makes it seem to appear out of nowhere...

Yes, along the middle bottom, but moving against the static background stars, L-R. Very dim, i lost it a couple of times when i blinked

 

[EarthlingX]

Mercury transit, from Virgo to Leo, 2010.Aug.31-2010.Sept.07 SOHO Lasco C3 :
[youtube]http://www.youtube.com/watch?v=M8DKitHl6Ew[/youtube]

I had to download images in two parts of 4 days each, it just didn't download faster than 30kB/s, stopped three times, when in two parts it was around 100kB/s, 500 MB of 1k images all together.

There's a couple of nice CMEs too, on 4th.Sept, as an example.

 

[EarthlingX]

Kreutz-group sungrazer comet :

 

[MeteorWayne]

What day was that?

 

[EarthlingX]

2010-09-29 - 2010-09-30, 29th mostly, it gets very close to the Sun around midnight 29th, appears around 09:00 on 29th, as much as i can see.

SOHO Movie Theater

 

[MeteorWayne]

The current C3 loop shows Saturn from the left edge through conjunction.

http://sohowww.nascom.nasa.gov/data/LAT ... ent_c3.gif

And as EX pointed out, on the 29th, you can see the tiny comet heading toward the sun from the 4 o'clock position.

It's worth keeping an eye out over the next few days, as the tiny bits of the Kreutz comets sometimes come in bunches...

 

[EarthlingX]

According to

Sungrazing Comets :

Yet another bright Kreutz-group comet has been spotted in LASCO C3! (It's actually quite common for them to appear in clusters of 2 or 3)

but i can't see it ? Nice CME on 2010-10-01

sungrazer.nrl.navy.mil : SOHO and STEREO Sungrazing Comets

 

[MeteorWayne]

Just showed up in the last few frames today...

 

[MeteorWayne]

Both comets made it into the LASCO C2 Field of View, the first early on the 30th, and the second early on the 2nd.

To see them, go to The SOHO Movie Theater

Select LASCO C2 for the Image type.
Enter 2010-09-30 in the start date for the first, 2010-10-02 for the second.
Leave the end date blank (That gives you one day by default). Hit Search after entering each date.

MW

 

[MeteorWayne]

http://sohowww.nascom.nasa.gov/data/LAT ... ent_c3.gif

Now as Saturn slowly exits stage right at Mag +0.9, the much brighter Mercury (Mag -1.3) pops up, moving rapidly from right to left heading for superior conjunction (passing behind the sun) on the 16th.

 

[EarthlingX]

twitter.com : SungrazerComets :

Bo Zhou has found a VERY bright Kreutz-group comet! http://sungrazer.nrl.navy.mil/index.php ... ho1932.jpg More pics/movies later...

 

[MeteorWayne]

To see it on the SOHO Movie Theater

Select C3; it can currently be seen coming from the lower right if you select the last 100 images.

MW

 

[MeteorWayne]

At the Movie Theater link above, you need to select at least 150 images on C3 to see the whole thing.

It's also in the C2 field of view, select 50 images.

There are about 5 hours of images missing at the moment (between 0200 and 0700), sometimes these will get filled in later.

Nice tail on this comet!

The bright object with the saturated bins above the sun moving right to left is Mercury (Mag -1.2), the bright star moving left to right that it passes on the way in is Spica (Mag +1)

 

[EarthlingX]

sohodata.nascom.nasa.gov : SOHO Movie Theater
LASCO C2
from 2010-10-20, but if you really want to see it all from 2010-10-19 16:18;
to 2010-10-21

LASCO C3
from 2010-10-21 to 2010-10-21

 

[MeteorWayne]

sohodata.nascom.nasa.gov : SOHO Movie Theater

You have these backwards. The C3 (The wider view, blue one) the dates should be 2010-10-19 to 2010-10-21.

For the C2 (The closer, orange one), you only have to enter the start date of 2010-10-21; the default is one day, so there's no need to enter an end date.

MW

 

[EarthlingX]

sohodata.nascom.nasa.gov : SOHO Movie Theater

You have these backwards. The C3 (The wider view, blue one) the dates should be 2010-10-19 to 2010-10-21.

For the C2 (The closer, orange one), you only have to enter the start date of 2010-10-21; the default is one day, so there's no need to enter an end date.

MW

True. At least dates and times are ok, right ?

LASCO C3
from 2010-10-20, but if you really want to see it all from 2010-10-19 16:18;
to 2010-10-21

LASCO C2
from 2010-10-21 to 2010-10-21

Found couple of movies :

sungrazer.nrl.navy.mil : Bright Kreutz comet SOHO-1932

Below are two movies of the very bright Kreutz-group comet, SOHO-1932. It was discovered by Bo Zhou from China -- one of our most successful comet-hunters -- in the LASCO C3 images on October 19.

...

 

[EarthlingX]

spaceweather.com : BIG BRIGHT OBJECT NEAR THE SUN

Don't panic, it's just Venus. The brilliant evil twin of Earth is passing between our planet and the sun this week, making a bright UFO-like light in SOHO coronagraph images:

The bright rays and luminous bloom centered on the planet are digital artifacts. Venus is so bright, it saturates SOHO's CCD detectors, causing electrons to "bleed" across pixel boundaries. The same thing happens to a lesser degree with Mercury, which is bisected by a horizontal bar--another artifact. Note how the star Spica, dimmer than the planets, appears as a normal pinprick. It does not saturate the CCD.

 

[MeteorWayne]

Another Sun grazing comet (May not be a Kreutz):

Go here: http://sohodata.nascom.nasa.gov/cgi-bin ... ie_theater

Select C3 and start date 2010-11-13, end date 2010-11-14

For close up, select C2 and enter 2010-11-14 for start date and leave end date blank.

In either case, once you enter the date(s), click on "search", lower right.

MW