Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

Search the Community

Showing results for tags 'lunar x'.

More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


  • Welcome
    • Welcome
  • Beginners
    • Getting Started General Help and Advice
    • Getting Started Equipment Help and Advice
    • Getting Started With Observing
    • Getting Started With Imaging
  • Community
    • Official SGL Announcements and Events
    • SGL Challenges and Competitions
    • SGL Star Parties
    • Star Parties & Astro Events
    • Celestial Events Heads Up
    • The Astro Lounge
  • Retailers
    • Sponsor Announcements and Offers
    • FLO Clearance Offers
    • IKI Observatory
    • Supplier Reviews
  • Astro Classifieds
    • For Sale / Swap
    • Wanted
  • Equipment
  • Observing
  • EEVA (Electronically Enhanced Visual Astronomy)
  • Imaging
  • Science
  • WADAS's WADAS Discussion Forum
  • Beaufort Club's Topics
  • Swindon Stargazers Club's Topics
  • East Midlands Stargazers''s Topics
  • Central Scotland Astro's Topics
  • SGL Cumbrian Skies's Topics
  • Herts, Beds and Bucks Group's Topics
  • SGL East Anglian Group's Topics
  • South Leicester Observers's Topics
  • South Wales Group's Topics
  • SGL Surrey Observers's Topics
  • South Yorkshire Stargazers's Topics
  • Yorkshire Astronomers's Topics
  • Devon and Cornwall's Topics
  • West Midlands's Topics
  • Essex Cloud Dodgers's Topics
  • Essex Cloud Dodgers's New equipment
  • NLO and Planetarium's Topics
  • Astronomical Society of Edinburgh's Discussion
  • Dorset Stargazers's Topics
  • Hairy Stars Club (Comets)'s Tutorials and Guides
  • Hairy Stars Club (Comets)'s General Discussion
  • Hairy Stars Club (Comets)'s Observing Campaigns
  • Hairy Stars Club (Comets)'s Analysis results
  • Hairy Stars Club (Comets)'s Useful Links
  • Pixinsight Users Club's Pixinsight Discussion Forum


  • Astro TV
  • Celestial Events
  • SGL Calendar
  • Astro Society Events
  • Star Parties
  • WADAS's Events
  • Beaufort Club's Events
  • Astronomical Society of Edinburgh's Events
  • Dorset Stargazers's Events


There are no results to display.

There are no results to display.

Find results in...

Find results that contain...

Date Created

  • Start


Last Updated

  • Start


Filter by number of...


  • Start





Website URL







Found 15 results

  1. Stu

    Lunar X Visible

    This should be a good one. Moon visible throughout and at 57 degrees at the start. X and V should be on show.
  2. Close up of a reprocessed avi video images taken on 22nd February just gone, showing from the top the crater Rhaeticus, and running down the terminator to show the Lunar X formed from the combination of crater rims from the craters Purbach, La Caille & Blanchinus. The craters Stofler & Faraday can be seen just off the terminator at the bottom of the image. Image taken with my ZWO ASI 120 MC camera, using my Celestron Omni 120mm f8.3 refractor. Processed through PIPP, Registax, & tweeked in PS CC. Screenshot below image is taken from ios app Moon Globe HD for crater details.
  3. Thought I would try my hand with another entry. Same old setup, Tak FC-100DC on AZGTi mount. Mark VI binoviewers, Zeiss 25mm orthos, x1.7 GPC and a AP Barcon with extension tube, guessing around x150, maybe less. iPhone 6 Plus handheld at the eyepiece using ProCam 4 to take the image and PS Express to crop and tweak it a little.
  4. First ever heads up in this section The Lunar X (and V) will be visible tonight on the terminator. Timing I have from the post below is 18.07 UT, not sure if that is the start or best time, so look whenever you get the chance! Thanks to @67champ for the calculations. The moon will be nice and high, 51.7 degrees at 18.07 so views, cloud permitting, should be great! I will add these to the event calendar as soon as I can, will certainly put tonight's in right now. Let us know how you go.
  5. I took some practice shots of the Moon on 22 Feb and later realised I had captured the elusive Lunar X C8 SE, ZWOASI120MC
  6. Stu

    Lunar X Visible

    A little lower than the April event but still should be a good one. Starting at 6.42pm at around 40 degrees altitude, finishing at 11.03pm at around 20 degrees.
  7. From the album: Starchasing

    The elusive Lunar X and V on the first quarter moon
  8. A reprocess of an image that I acquired on 1st June 2017 which was taken with my Esprit 150 and SX Trius 814 at prime focus. Although it was unplanned, I later discovered that I had also captured the so called X and V effects. I've attempted to boost the visibility of the V and X, along with the crater details and colours. The background sky level has also been raised. Again, I decided to process the image using my normal DSO processing routine. I'd appreciate any comments and criticism. Alan
  9. From the album: Lunar

    A semi-manual image of the 50% moon on 1st June 2017 taken with my Esprit 150. Whilst my DSO imaging set up was waiting for the moon to increase its angular distance from my selected DSO target, I took the opportunity to acquire some semi-manual images. I decided on an LRGB strategy since I wanted detail and colour contrast, so took 20 images per filter that where subsequently calibrated and stacked in RegiStar. I then followed my normal DSO processing workflow, sharpening the Lum component and boosting colour on the RGB composite. After I had finished processing the image, I noticed that, by accident, I had also managed to capture the so called Lunar X and V's - optical illusions that result in "X" or "V" shapes on the moon's surface. These are visible in transition region between the light and dark regions.
  10. Stu

    Lunar X Visible

    The Lunar X is visible tonight, along with the Lunar V. Timing I have is 18.07, I believe that is the peak of the event but it may be the start so keep checking! EDIT I now believe 18.07 to be the start, and 22.26 to be the finish of this event. If you have more accurate info, please add to the thread in the Heads Up forum. Lunar X 2018 TXT.pdf
  11. From the album: Lunar

    A reprocess of the data from 1st June 2017 to highlight the V and X optical effects, colour and crater detail.
  12. 2018 Lunar X Predictions (approx "start times"): Using Werner (1.2 Sun Alt) with coordinates of: LAT -28.0 LON 3.3 Date Time Sun Angle at the X at this time 01/24/2018 0442UT -.975 @ X 02/22/2018 1807UT -1.025 @ X 03/24/2018 0657UT -1.064 @ X 04/22/2018 1913UT -1.082 @ X 05/22/2018 0702UT -1.079 @ X 06/20/2018 1837UT -1.054 @ X 07/20/2018 0614UT -1.010 @ X 08/18/2018 1809UT -0.956 @ X 09/17/2018 0632UT -0.920 @ X 10/16/2018 1930UT -0.901 @ X 11/15/2018 0859UT -0.903 @ X 12/14/2018 2246UT -0.935 @ X Average = -.0.992 @ X Someday, when I have time, I will use Sun angle at the X of -1.000 to predict the start of event. Either way, the times are very close as the start of the event which is somewhat subjectional... Dana T
  13. 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).
  14. Trying out my DSI lll color on the moon with a 5x powermate and t-ring before I got another laser collimator . It's not as sharp as I would've liked and there's artifacts everywhere but, this is my 1st attempt with this cam.
  15. until
    It's there, but you won't be able to see it, Moon below the horizon.
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.