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Lunar X Start Times - 2019

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#1 67champ

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Posted 18 August 2018 - 03:45 PM

Approx. start times for fully formed illuminated X using 1.2 Sun Alt over
crater Werner:

 

Date              UT Time   Sun Alt at "X" location  Co-Long

01/13/2019    1235UT          -.987 @ X         358.07

02/12/2019    0213UT          -1.031 @ X       357.64

03/13/2019    1526UT          -1.072 @ X       357.31

04/12/2019    0410UT          -1.086 @ X       357.19

05/11/2019    1625UT          -1.072 @ X       357.29

06/10/2019    0417UT          -1.039 @ X       357.59

07/09/2019    1558UT          -0.994 @ X       357.99

08/08/2019    0343UT          -0.949 @ X       358.40

09/06/2019    1547UT          -0.907 @ X       358.71

10/06/2019    0417UT          -0.897 @ X       358.83

11/04/2019    1718UT          -0.907 @ X       358.72

12/04/2019    0644UT          -0.948 @ X       358.40

 

Dana Thompson


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#2 Doug Neal

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Posted 03 January 2019 - 05:15 PM

Thank you....


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#3 67champ

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Posted 04 January 2019 - 05:26 PM

Now that I have actually looked at the start times a little closer for 2019, it doesn't look like many good observing nights this year...   :-(

 

dana t


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#4 Dave Chapman

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Posted 07 February 2019 - 07:52 AM

Now that I have actually looked at the start times a little closer for 2019, it doesn't look like many good observing nights this year...   :-(

 

dana t

At least in the east of North America. I have noted this before, that you can have long, dry spells at a given location. I think this is one reason the effect is not more widely known.

 

Dave


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#5 frank5817

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Posted 11 February 2019 - 09:57 PM

Lunar X beginning about and hour ago.

Shot with a hand held camera  using

eyepiece projection.

 

Frank 

 

DSC00714 (1) - Copy.JPG


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#6 Codbear

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Posted 13 February 2019 - 12:24 AM

Dana,

 

Thanks for all your help last year in explaining lunar X and V. While nothing worked out in 2018, last night the weather cleared for about 10-15 minutes just in time for me 

to observe both with my Questar 3 1/2.

 

My next chance will be in April, so hopefully, with better weather, I'll have more time and be able to break out one of my heavy hitters to watch the progression across the crater rims.

 

Sam Williams


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#7 aa6ww

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Posted 12 March 2019 - 06:28 PM

The notes above show Lunar X is tomorrow at the following time:

 

03/13/2019    1526UT

 

I see its already happened...  I could never figure out the UTC Conversions.

 

We just changed to Daylight savings time in Calif. What time would this be tomorrow here in Calif, anyone know the conversion? Would that be 8:26am? If so, on what date?

 

thanks for any help.

 

...Ralph


Edited by aa6ww, 12 March 2019 - 06:29 PM.


#8 Aaron_tragle

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Posted 12 March 2019 - 06:48 PM

It would be 8:26am for ya'll. I may try to capture this during my lunch at school tomorrow with the orange tube C5. Lunch luckily lines up tomorrow for this event!



#9 Tom Glenn

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Posted 13 March 2019 - 03:14 PM

As you guys have probably already figured out, the Moon is not above the horizon during the event for the United Stated this March.  The possible exception is on the East Coast, where you can sort of catch the tail end of the event as the Moon is rising above the horizon near mid-day, but this is not ideal.  On the East Coast, the Moon will only be about 10 degrees above the horizon, during the middle of the day, as the event is nearing its conclusion.  



#10 67champ

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Posted 15 March 2019 - 03:53 PM

This is the worst year in my memory for observing the Lunar X after sunset....

 

dana t



#11 aa6ww

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Posted 11 April 2019 - 01:41 PM

Tomorrow is showing Lunar X for  04/12/2019    0410UT

 

 I miss these events more then I make them partially because this whole time labeling confuses me not just because of the translation from UT time to my time here in California but also because we are now in daylight savings time.

 

Google is showing the translation to my time here in California, as being 9:10PM for Lunar X for tomorrow night.

 

I always use this conversion table, but still I need to ask:

 

https://www.worldtim...o-pdt-converter

 

Can someone with more knowledge then me on these time conversions, confirm this time as being accurate for tomorrow night? This would be an excellent time to observe Lunar X since the moon will be very well placed in the sky tomorrow night. I was observing the moon last night and the thin crescent is awesome to observe, using my Tasco 7TE-5 60mm refractor with binoviewers on.

 

Thanks in advance for clarifying.

 

Ralph in Sacramento


Edited by aa6ww, 11 April 2019 - 04:52 PM.


#12 frank5817

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Posted 11 April 2019 - 02:08 PM

Ralph,

 

Actually that would be tonight at 9:10 pm.

I almost gave you the wrong day. When it is 04:00 UT on 4/12/ 2019 it is still 4/11/ 2019 in California.

 

Frank



#13 aa6ww

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Posted 11 April 2019 - 04:31 PM

Your correct Frank.  I clicked on 4am after adding tomorrow date and it did show April 11th.

 

Thanks you.

 

 

Ralph

 

Ralph,

 

Actually that would be tonight at 9:10 pm.

I almost gave you the wrong day. When it is 04:00 UT on 4/12/ 2019 it is still 4/11/ 2019 in California.

 

Frank



#14 NorthernlatAK

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Posted 11 April 2019 - 04:32 PM

Figures I'm clouded in, I have yet to catch it since getting my scope last March. I'd still be in daylight at that time being in alaska though (8:10pm here). Not dark until 11:00 or so.

#15 aa6ww

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Posted 11 April 2019 - 04:39 PM

Ok, here's something at seems odd or awkward regarding Lunar X this time around. Tonight I'm showing the moon at 40% phase and tomorrow night its showing 51 percent.

Just to be safe, I'm checking for it tonight and tomorrow night. Either way, its fun looking at the moon when its at these phases and this time of the year its pretty high in the sky at 9pm.

 

...Ralph



#16 aa6ww

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Posted 12 April 2019 - 09:56 AM

Well, the Lunar X was great last night, and the Lunar V. I was set up at 8:30pm, 40minutes before the target time and both were already visible. My 60mm refractor was very good for observing this, not so bright that it hurts my eyes. I wont look at the moon with anything larger than 4" without an aperture mask or an ND Filter.

 

Thanks again for everyone's help.

 

We will try it again next time!

 

..Ralph in Sacramento


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#17 rubmetoasty

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Posted 12 April 2019 - 03:17 PM

Thanks for this thread! 

Been wanting to see this since i had heard about it, and i work for SpaceX so it has the benefit of looking like the company logo's X haha.

 

Finally caught it last night around 1030 pacific from my light polluted yard. Way better in person then the photos out there!


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#18 67champ

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Posted 12 April 2019 - 08:18 PM

Cant believe it took you this ling to see it!!!  LOL

 

dana t




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