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Lunar X this month?

Started by Herbert Kraus, 01/05/2013 04:37PM
Posted 01/05/2013 04:37PM | Edited 01/05/2013 06:49PM Opening Post
I have ascertained that on January 19 at 0200 UT the colongitude of the terminator will be at precisely 358.0º, the perfect position for viewing the Werner (or lunar) "X" at 6:00 p.m PST on the evening of Friday, January 18. However, I understand that another condition for this is that the altitude of the rising sun at the crater Werner should be about 1.5º. Can anyone advise how and where I can find information indicating the altitude of the sun at 0200 UT on January 19, 2013 at colongitude 358º?

NexStar 8i SCT, Orion 80ED APO refractor, Orion 120 mm EQ refractor, 3.5-inch Questar
Posted 01/05/2013 07:29PM #1
I found this on the web.....

I saw the November X quite by accident.


Posted 01/19/2013 05:10PM #2
Thanks Mr. Kraus and Mr. Love, Thanks to your posts I learned about Lunar X . I just took the telescope outside to check what I could see last night. At first I could not see any of the Lunar X. However as the hours passed it slowly came into view (unfortunately as the moon was setting). About 1/2 hour after midnight the x became clearly discernible, but seeing really deteriorated. It did not help that there were a few tree branches in the way and the inversion was quite bad.

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urassner's attachment for post 146548