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General Astronomy >> General Observing and Astronomy

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shrevestan
professor emeritus

Reged: 04/19/12

Loc: Shreveport, LA

Re: Saw the "X" on the Moon new

[Re: spruce]
#5300771 - 07/03/12 02:54 PM

Quote:

If you miss the X you can catch this feature a few days later in the WURZELBAUER crater:-)

Are you referring to the line in the crater?

Post Extras:

Dave Mitsky
Postmaster

Reged: 04/08/02

Loc: PA, USA, Planet Earth

Re: Saw the "X" on the Moon new

[Re: mantrain]
#5305474 - 07/06/12 02:05 PM

Quote:

what is the "X" ?

The Lunar X, which is also known as the Werner or Purbach Cross, is an X-shaped clair-obscur illumination effect involving various ridges and crater rims located between the craters La Caille, Blanchinus, and Purbach.

Dave Mitsky

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Pinbout
Post Laureate

Reged: 02/22/10

Loc: Montclair

Re: Saw the "X" on the Moon new

[Re: Dave Mitsky]
#5308993 - 07/08/12 09:19 PM

I haven't looked for the 'x' before but after reading this thread I see I video taped it.

moon thru my new dob you can see a close up of the 'x' at 1:36 on the time slider.

thanks everyone for posting their 'x's.

I really need to get something to hold that vid cam inplace, hand holding is obviously not for me.

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mdalton
member

Reged: 10/05/12

Loc: Farmington, Mo

Re: Saw the "X" on the Moon new

[Re: mantrain]
#5531277 - 11/20/12 11:11 PM

I saw it for the first time tonight. 11-20-12 9:40 PM.

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csa/montana
Den Mama

Reged: 05/14/05

Loc: montana

Re: Saw the "X" on the Moon new

[Re: mdalton]
#5531316 - 11/20/12 11:28 PM

I was hoping to see it (for the first time); however, have been clouded out here.

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Dennis_S253
scholastic sledgehammer

Reged: 11/22/11

Loc: West Central Florida

Re: Saw the "X" on the Moon new

[Re: csa/montana]
#5531327 - 11/20/12 11:37 PM

yep, clouds rolled in here also. Darn, I wanted to see it.

Post Extras:

core
scholastic sledgehammer

Reged: 02/23/08

Loc: Mostly in Norman, OK

Re: Saw the "X" on the Moon new

[Re: Dennis_S253]
#5531420 - 11/21/12 12:57 AM Attachment (20 downloads)

Had a great view with ED80sf, Burgess binoviewer (w/ OCS) and a pair of 20mm binolites. Got a quick video capture using a pocket DVR with dashboard-cam-to-1.25" adapter.

Does anyone have a link to 2013 Lunar X schedule?

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rookie
Good Night Nurse

Reged: 01/14/06

Loc: St. Petersburg, FL

Re: Saw the "X" on the Moon new

[Re: core]
#5531613 - 11/21/12 07:32 AM

Predictions for favorable times and months to see the Lunar X are posted in the Lunar Observing Forum.

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GeneT
Ely Kid

Reged: 11/07/08

Loc: South Texas

Re: Saw the "X" on the Moon new

[Re: Andrev]
#5531915 - 11/21/12 10:42 AM

Quote:

Genet

So the Elvis picture is not you ?

Andre

In my youth, they said I looked a lot like him.

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Startraffic
sage

Reged: 02/12/06

Loc: Lat. 39.143345, Long. -77.1748...

Re: Saw the "X" on the Moon new

[Re: GeneT]
#5532192 - 11/21/12 12:40 PM

I got home at 7:45, crystal clear skies! Ate, put on my warm suit & when out to get set up, not a star to be seen & a glow where the moon was! FOG! Oh well, next month

Clear Dark Skies
Startraffic
39.138274 -77.168898
518ft ASL

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Traveler
Pooh-Bah

Reged: 08/19/07

Loc: The Netherlands

Re: Saw the "X" on the Moon new

[Re: Startraffic]
#5532248 - 11/21/12 01:11 PM

Never heard about this X thing. Thanks.

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Dave Mitsky
Postmaster

Reged: 04/08/02

Loc: PA, USA, Planet Earth

Re: Saw the "X" on the Moon new

[Re: rookie]
#5532306 - 11/21/12 01:44 PM

Quote:

Predictions for favorable times and months to see the Lunar X are posted in the Lunar Observing Forum.

Here's a link to the thread.

Dave Mitsky

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Gastrol
scholastic sledgehammer

Reged: 11/04/11

Loc: los angeles

Re: Saw the "X" on the Moon new

[Re: Dave Mitsky]
#5532476 - 11/21/12 03:20 PM

Approximately for how long is this X visible for? Several minutes? Several hours?

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Dave Mitsky
Postmaster

Reged: 04/08/02

Loc: PA, USA, Planet Earth

Re: Saw the "X" on the Moon new

[Re: Gastrol]
#5532933 - 11/21/12 08:46 PM

It's visible for several hours.

Dave Mitsky

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TFiebig
member

Reged: 07/29/09

Loc: Gamma Quadrant, Sector 4

Re: Saw the "X" on the Moon new

[Re: Dave Mitsky]
#5533865 - 11/22/12 12:24 PM

I didn't know it even existed until I stumbled into this forum. I saw it immediately once I pointed my meager 130mm Newt at the moon. Thanks!

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oldtimer
Pooh-Bah

Reged: 11/13/08

Loc: Lake County Illinois

Re: Saw the "X" on the Moon new

[Re: shrevestan]
#5537769 - 11/24/12 07:59 PM

After you view it on the best night try looking at the same spot on the following night. It will give you a better understanding on how the view is formed.

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67champ
professor emeritus

Reged: 07/03/06

Loc: Ohio, USA

Re: Saw the "X" on the Moon new

[Re: oldtimer]
#5542550 - 11/27/12 05:53 PM

My 2013 predicted "Start times" (for fully formed X) for the First Quarter Lunar X are below:

1-19 0801 UT
2-17 2233 UT
3-19 1154 UT
4-17 2357 UT
5-17 1056 UT
6-15 2121 UT
7-15 0746 UT
8-13 1844 UT
9-12 0642 UT
10-11 1950 UT
11-10 1005 UT
12-10 0105 UT

Post Extras:

Dave Mitsky
Postmaster

Reged: 04/08/02

Loc: PA, USA, Planet Earth

Re: Saw the "X" on the Moon - December's Xs new

[Re: 67champ]
#5542566 - 11/27/12 06:07 PM

The Curtiss Cross is predicted to occur beginning at 4:45 UT on December 7th.

The Lunar X is predicted to occur beginning at 16:38 UT on December 20th.

Dave Mitsky

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krp
super member

Reged: 11/10/10

Loc: Central Illinois

Re: Saw the "X" on the Moon - December's Xs new

[Re: Dave Mitsky]
#5543043 - 11/27/12 11:03 PM

Has anybody seen this new tool from NASA? http://svs.gsfc.nasa.gov/vis/a000000/a004000/a004000/
It lets you plug in a date and time and you can see exactly what the moon will look like. It only works for 2013 though.

Post Extras:

REC
Carpal Tunnel

Reged: 10/20/10

Loc: NC

Re: Saw the "X" on the Moon - December's Xs new

[Re: krp]
#5543636 - 11/28/12 11:00 AM

Cool, thanks! Another bookmark

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