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Knighty2112

Lunar X start times 2017

22 posts in this topic

Hi all. As one who has still yet to catch a Lunar X on the moon yet, I was looking for a list of the start times for this in 2017. I found some times listed on a post in Cloudynights,  but noted that another poster had slightly different times, so it might be best if wanting to see the lunar X (or V) to look  a little before the times given, and also after the time given if they are not showing. I'm hoping to find the software LTVT moon event predictor that will enable me to do these predictions for myself in future, so if I find the software for it I'll post up a link to it. :) 

 

Lunar X dates 2017

The X is caused by sunlight on the craters Blanchinus, La Caille and Purbach. The lunar V is caused by sunlight on the crater Ukert. The lunar V appears at approximately the same time as the lunar X on the terminator. Dates are in American format, and I've added BST times (brackets) for the UK too;
 

01/05/2017                0654UT         
02/03/2017                2046UT       
03/05/2017                0956UT         
04/03/2017                2221UT (2321BST)        
05/03/2017                1010UT  (1110BST)      
06/01/2017                2136UT (2236BST)         
07/01/2017                0857UT  (0957BST)       
07/30/2017                2033UT (2133BST)        
08/29/2017                0839UT (0939BST)       
09/27/2017                2125UT (2225BST)         
10/27/2017                1051UT       
11/26/2017                0046UT          
12/25/2017                1450UT        


During British summertime (BST), adjust UT (Universal Time) to UT+1 hour to get correct BST time. BST starts 26th March at 01:00 (+1hr), and ends at 29th October at 02:00 (-1hr).

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Thanks for this very useful list Gus. I have seen the X a few times and as you say it is best to start looking a bit earlier than the times expected and a persevere a bit beyond them as well.

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25 minutes ago, laudropb said:

Thanks for this very useful list Gus. I have seen the X a few times and as you say it is best to start looking a bit earlier than the times expected and a persevere a bit beyond them as well.

Yep. Good advice. Here's hoping for clear skies on the next one on the 3rd April. :) 

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Posted (edited)

great imfo Gus, I imaged the X&V 4 times last year, Ill hopefully beat it this year "fingers crossed", your times will come in handy. thanks, charl. heres one of me daytime pics.

58c51fda5ffe7_XVmoon15-2-16.thumb.png.362d0242e66361c6025e07de5135365a.png

you don't have to ask me twice,charl. and heres a nighttime one I got in 2015, I'm have trouble finding them in my moon imaging folder ive over 2000 images and there only marked as moon and the dates, in future ill markthem with a x in the name.

58c539d0b5ee0_Moonhires.18-11-15_XV.thumb.png.4801d30c85d336266e6c344408c8086e.png

Edited by xtreemchaos
added pic
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10 minutes ago, xtreemchaos said:

great imfo Gus, I imaged the X&V 4 times last year, Ill hopefully beat it this year "fingers crossed", your times will come in handy. thanks, charl.

Good going Charl. Well done! Feel free to post one or two images up in this post if you want so people who have still yet to see them can get an idea of what they look like in reality. :) 

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Thanks Charl! :) 

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34 minutes ago, Knighty2112 said:

Yep. Good advice. Here's hoping for clear skies on the next one on the 3rd April. :) 

I will be at Astrofarm then, so hopefully dark clear sky.

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Great Post.

Must put these in the diary. Never managed to catch these.

Paul

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Great post, I'm always looking for these dates but they aren't easy to find.

I think I've done this right, but have listed when they are visible or not here. Corrections welcomed!

01/05/2017                0654UT         
02/03/2017                2046UT       
03/05/2017                0956UT         
04/03/2017                2221UT (2321BST)          Visible
05/03/2017                1010UT  (1110BST)         Not visible
06/01/2017                2136UT (2236BST)          Visible
07/01/2017                0857UT  (0957BST)         Not visible
07/30/2017                2033UT (2133BST)          Visible
08/29/2017                0839UT (0939BST)          Not visible
09/27/2017                2125UT (2225BST)          Visible but low
10/27/2017                1051UT       Not visible
11/26/2017                0046UT       Not visible
12/25/2017                1450UT       Visible but daylight

Inevitable SkySafari pics to illustrate.

IMG_9602.PNG

IMG_9605.PNG

IMG_9606.PNG

IMG_9607.PNG

IMG_9608.PNG

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These are just the waxing Lunar X's of course, the feature is also visible on the waning moon about 6 hours after last Quarter.

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Great thread guys, I completely forgot about the X in March so good to prepare for April.

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3 hours ago, goodricke1 said:

These are just the waxing Lunar X's of course, the feature is also visible on the waning moon about 6 hours after last Quarter.

isnt there just so many things to remember !

calendar anywhere anyone ? ! :)

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On 12/03/2017 at 13:35, Stu said:

Inevitable SkySafari pics to illustrate.

I thought you were giving us those to help us star-hop to the moon.

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has anybody caught the holey triangle yet :icon_biggrin:, charl.

58cd18df47412_moon9-11-1617_00.thumb.png.e4e800fab7d85eb20f3e6fab3f6e721a.png

 

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On 16/03/2017 at 23:28, goodricke1 said:

These are just the waxing Lunar X's of course, the feature is also visible on the waning moon about 6 hours after last Quarter.

Do you have any more info on this Goodricke?

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43 minutes ago, Stu said:

Do you have any more info on this Goodricke?

The dates I'm looking at indicate that the March and April events are not visible from here, with the May event happening well after sunrise. June not visible so it seems for the next suitable opportunity we have to wait until July 17 around 0225 BST.

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Posted (edited)

On 17/03/2017 at 02:56, SilverAstro said:

calendar anywhere anyone ? ! :)

 

5 hours ago, Stu said:

Do you have any more info

I have just been looking at time of last quater on Fred Espenak's site
http://earthsky.org/astronomy-essentials/moon-phases-synodic-months-supermoons-eclipses#phases  (second column below.}

I've added 6hr to these times 3rd column and whizzed through Stellarium and got the 4th column which doesnt look promising :( but it is just a quick look so I may have made a blunder, would someone like to check while I re-do it ? ) The problem being that the last Q moon does not rise till about   3am   1 am local time.

2017/01/19    17:14:00 23:14x
2017/02/18    14:33:00 20:33x
2017/03/20    11:58:00 17:58x
2017/04/19    05:57:00 11:57x
2017/05/18    20:33:00  2:33x
2017/06/17    07:33:00 13:33x
2017/07/16    15:26:00 21:26x
2017/08/14    21:15:00  3:15--SE 35*
2017/09/13    02:25:00  8:25 high S daylight
2017/10/12    08:25:00 14:25x
2017/11/10    15:37:00 21:37x
2017/12/10    02:51:00  8:51-- SW dawn 42*

 

Edited by SilverAstro
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Thanks both. On balance I think 3rd April one looks most promising. Will give it a go.

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Posted (edited)

I wonder what the visibility interval +/- 6hr is ?

Edited by SilverAstro

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Here is a photo I shot of the Lunar X and V last month:

ASTRONOMY%20-%20MOON%20-%20FIRST%20QUART

Was clouded out this month. I'll try for the lunar alphabets again in April.

Cheers,

Reggie

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On 3/18/2017 at 07:24, xtreemchaos said:

has anybody caught the holey triangle yet :icon_biggrin:, charl.

58cd18df47412_moon9-11-1617_00.thumb.png.e4e800fab7d85eb20f3e6fab3f6e721a.png

 

Haha! Hadn't seen that one, Charl. I'll have to add it to the list!

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I've got a great shot of the Lunar 'O'...

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