You are not logged in. [Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar

Observing >> Lunar Observing Previous   Index   Next   Threaded

Pages: 1 | 2 | 3 | 4 | (show all) Lun-a-tic journeyman Reged: 09/22/12 Lunar X - Purbach X       #5510032 - 11/08/12 02:05 PM Edit   Reply   Quote Quick Reply   I am trying to find a website that may give me the dates and times for viewing the Lunar X / Purbach X for the upcoming year 2013, Is there someone on Cloudy Nights that can help me out? I sure hope there is, So thanks for helping . Post Extras:       REC Carpal Tunnel Reged: 10/20/10 Loc: NC Re: Lunar X - Purbach X [Re: Lun-a-tic]       #5510118 - 11/08/12 03:11 PM Edit   Reply   Quote Quick Reply   Here are the dates for this year. Good one comming up this month. Did you google search for next year? Jan 30 1731 CST Feb 29 0754 CST Mar 29 2204 CDT Apr 28 0955 CDT May 27 2044 CDT Jun 26 0702 CDT Jul 25 1726 CDT Aug 24 0431 CDT Sep 22 1639 CDT Oct 22 0601 CDT Nov 20 1930 CST Dec 20 1038 CST Post Extras:       Lun-a-tic journeyman Reged: 09/22/12 Re: Lunar X - Purbach X [Re: REC]       #5510346 - 11/08/12 06:02 PM Edit   Reply   Quote Quick Reply   Yes I have tried Google several times, even went as far as entering Purbach X but to no avail, I'm open for any suggestions, Thanks for your help. My orinigal list came from "someone" on Cloudy Nights, I guess I need to dig back through some papers and see if I can find the orinigal and maybe even post their address hoping they spot it THANKS again Post Extras:       67champ professor emeritus Reged: 07/03/06 Loc: Ohio, USA Re: Lunar X - Purbach X [Re: Lun-a-tic]       #5511337 - 11/09/12 10:04 AM Edit   Reply   Quote Quick Reply   I do not know of any website dedicated to this. However, myself and a few others on here seem to post that info a few times a year on here and other sites... (Ed, Dave Chapman, others) The predicted "start" times usually vary just a few minutes among posters and don't present a big problem since you should be ready to observe or image well before the "X" is fully formed, right? :-) 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 dana t Post Extras:       67champ professor emeritus Reged: 07/03/06 Loc: Ohio, USA Re: Lunar X - Purbach X [Re: 67champ]       #5511344 - 11/09/12 10:09 AM Edit   Reply   Quote Quick Reply   Most common names for this seem to be, (but not limited to) are: Werner X Lunar X Purbach Cross Lunar Cross Purbach X Werner Cross Did I miss any??? :-) OH, this is NOT the same illumination as the "Curtiss Cross"! (different location, different co-long)... dana t Post Extras:       Lun-a-tic journeyman Reged: 09/22/12 Re: Lunar X - Purbach X [Re: 67champ]       #5511756 - 11/09/12 02:24 PM Edit   Reply   Quote Quick Reply   Dana T, THANK YOU, WHEN I GET A PICTURE OR TWO IN THE UPCOMING MONTHS I WILL POST IT WITH A REF: TO YOU THANKS AGAIN Post Extras:       edosaurusrex sage Reged: 01/30/07 Loc: Ft Worth, TX Re: Lunar X - Purbach X [Re: 67champ]       #5513580 - 11/10/12 07:28 PM Edit   Reply   Quote Quick Reply   Hi Dana, Here's what I got. The second time listed is the subjective "end" of the event. 19 JAN 0749 to 1052 17 FEB 2218 to 18 FEB 0121 19 MAR 1140 to 1443 17 APR 2347 to 18 APR 0250 17 MAY 1051 to 1354 15 JUN 2121 50 16 JUN 0024 15 JUL 0749 to 1052 13 AUG 1850 to 2153 12 SEP 0647 to 0950 11 OCT 1952 to 2255 10 NOV 1003 to 1306 10 DEC 0057 to 0400 Post Extras:       67champ professor emeritus Reged: 07/03/06 Loc: Ohio, USA Re: Lunar X - Purbach X [Re: edosaurusrex]       #5517570 - 11/13/12 09:46 AM Edit   Reply   Quote Quick Reply   Hey ED, thanks for your data; I hope to be watching this next Lunar X really close, and imaging too with any luck... dana t Post Extras:       RobDob sage Reged: 04/10/10 Loc: Brentwood (East Bay Area), CA Re: Lunar X - Purbach X [Re: 67champ]       #5518821 - 11/13/12 10:26 PM Attachment (58 downloads) Edit   Reply   Quote Quick Reply   Here's a miniature mode Lunar X I took from 9/21. Zoomed the raw photo, cropped it at processed it on tiltshiftmaker.com Rob Post Extras:       67champ professor emeritus Reged: 07/03/06 Loc: Ohio, USA Re: Lunar X - Purbach X [Re: RobDob]       #5518919 - 11/13/12 11:40 PM Edit   Reply   Quote Quick Reply   Cool pic. That is what one might call a "late X" as it has lots of sunlight surrounding it... dana t Post Extras:       RobDob sage Reged: 04/10/10 Loc: Brentwood (East Bay Area), CA Re: Lunar X - Purbach X [Re: 67champ]       #5520341 - 11/14/12 11:27 PM Edit   Reply   Quote Quick Reply   Yeah, it's a few hours late. The X was at it's best during daylight out here on the west coast on 9/21/12. The seeing was great and allowed some decent afocal point and shoot pics after the sun went down. Rob Post Extras:       Lun-a-tic journeyman Reged: 09/22/12 Re: Lunar X - Purbach X [Re: 67champ]       #5521151 - 11/15/12 12:36 PM Edit   Reply   Quote Quick Reply   Dana, Real quick , how do you calulate the times for the upcoming viewing times for the "X" ? I like to watch it form from nothing , so how would one sit and compute the times ( start, fully formed, and end ) just thought I would ask and try to do this on my own instead of always asking others. Thanks Gary a.k.a. LUN-A-TIC Post Extras:       edosaurusrex sage Reged: 01/30/07 Loc: Ft Worth, TX Re: Lunar X - Purbach X [Re: Lun-a-tic]       #5521759 - 11/15/12 07:19 PM Edit   Reply   Quote Quick Reply   Gary, I believe Dana uses the Sun's colongitude to make predictions. Dave Chapaman wrote a fantastic article a few years back with a timeline for the formation of the Werner X. Dave does correlate the timeline with other predictions, including mine. Post Extras:       67champ professor emeritus Reged: 07/03/06 Loc: Ohio, USA Re: Lunar X - Purbach X [Re: edosaurusrex]       #5522121 - 11/15/12 11:37 PM Edit   Reply   Quote Quick Reply   Gary, that's no problem, it makes me feel useful...lol Ed, I use a program that shows many different parameters; but I tend to go on the sun elevation (Sun Alt.) over crater Werner (1.2) to arrive at the "fully formed start time". I think on average it's about every approximately 29 days, 12 hours, and 44 minutes... dana t Post Extras:       Dave Chapman sage Reged: 01/27/07 Loc: Halifax, Nova Scotia, Canada Re: Lunar X - Purbach X [Re: edosaurusrex]       #5522747 - 11/16/12 11:39 AM Edit   Reply   Quote Quick Reply   Thanks for the kind words, Ed! A version of my 2007 JRASC article can be found at https://dl.dropbox.com/u/17678378/LunarX.pdf if anyone wants to read it. For those that have the software, I think Dana's solar elevation angle is the way to go to pinpoint the event; however, a simpler method is just to figure out when the colongitude is 358º, which is pretty easy to do these days with a variety of tools. This marks the "peak" of the apparition, although that term is subject to interpretation. Anyway, I would figure out that instant and start observing about 3 h earlier, if you want to see the whole thing develop. The X pretty much appears like clockwork every synodic month, i.e. 29.530589 days. That is the relatively easy part, then you have to figure out if you can actually see the Moon from your observing location at that time. This part of the event seems to confuse a lot of people, as they reckon they should be able to see it every month from the same location. I will not attempt a lengthy explanation here, but I invite folks to read my article. I admire you, Ed, for your patience in performing the calculations, posting them, and directing people's attention to them when they ask. It is an interesting phenomenon, and it gets people thinking and talking about the motion of the Moon and the Earth! Next Tuesday's X is very well placed for observers in North America, Central America, and South America. cielos claros Dave XVII Quote: Gary, I believe Dana uses the Sun's colongitude to make predictions. Dave Chapaman wrote a fantastic article a few years back with a timeline for the formation of the Werner X. Dave does correlate the timeline with other predictions, including mine. Post Extras:       edosaurusrex sage Reged: 01/30/07 Loc: Ft Worth, TX Re: Lunar X - Purbach X [Re: Dave Chapman]       #5523513 - 11/16/12 09:50 PM Edit   Reply   Quote Quick Reply   Shucks Dave, all I do is open the QBASIC program, enter the year, and less than 10 seconds later I have the dates and times. The compliment is, as always, appreciated. I agree with you about the X. Just like Alberio can generate an interest in other double stars, once the X is hunted down and viewed it can launch the observer into other lighting specific lunar phenomena like crater rays, or repeat views of things like Hadley Rille at the Apollo 15 landing site. The Moon got a lot more fun after I chased and then spotted the X. Ed Post Extras:       Dave Chapman sage Reged: 01/27/07 Loc: Halifax, Nova Scotia, Canada Re: Lunar X - Purbach X [Re: edosaurusrex]       #5529607 - 11/20/12 08:51 AM Edit   Reply   Quote Quick Reply   Happy X-hunting tonight, everyone in the Americas! Post Extras:       REC Carpal Tunnel Reged: 10/20/10 Loc: NC Re: Lunar X - Purbach X [Re: Dave Chapman]       #5529861 - 11/20/12 11:16 AM Edit   Reply   Quote Quick Reply   What's the best time to see it here EST? Thanks! Bob Post Extras:       Dave Mitsky Postmaster Reged: 04/08/02 Loc: PA, USA, Planet Earth Re: Lunar X - Purbach X [Re: REC]       #5530345 - 11/20/12 02:48 PM Edit   Reply   Quote Quick Reply   The Lunar X should be visible sometime around 8:30 p.m. EST. Dave Mitsky Post Extras:       Tom and Beth Carpal Tunnel Reged: 01/08/07 Loc: Tucson, AZ Re: Lunar X - Purbach X [Re: Dave Mitsky]       #5530657 - 11/20/12 05:20 PM Edit   Reply   Quote Quick Reply   Sadly, it looks like clouds are going to put a dmaper on Tucson Observations. Figures....STINKING clouds! Was going to FINALLY get a pic of this, up close and personal. Spent the last couple of nights honing the focus and camera settings.... Edited by Tom and Beth (11/20/12 05:24 PM) Post Extras:       Pages: 1 | 2 | 3 | 4 | (show all)

Previous   Index   Next   Threaded

Extra information 1 registered and 6 anonymous users are browsing this forum. Moderator:  THEPLOUGH  Print Thread Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Thread views: 4195 Jump to *Announcements and News* -----   Cloudy Nights Announcements   Discussion of CN Articles, Reviews, and Reports   Celestial Events*General Astronomy* -----   Beginners Forum   General Observing and Astronomy   Outreach   Light Pollution*Equipment Discussions* -----   ATM, Optics and DIY Forum   Binoculars   Binoviewers   Cats & Casses   Classic Telescopes   Equipment   Eyepieces   Mounts   Observatories   Reflectors   Refractors    Video and Electronically Assisted Astronomy*Astrophotography and Sketching* -----   Beginning and Intermediate Imaging   Film Astrophotography   DSLR & Digital Camera Astro Imaging & Processing   CCD Imaging & Processing   Solar System Imaging & Processing   Sketching   Astro Imaging/Sketching Contest *Observing* -----   NEO   Planetary and Solar System Observing   Lunar Observing   Deep Sky Observing   Double Star Observing   Solar   Variable Star Observing and Radio Astronomy*Telescope Specific Forums* -----   Celestron NexStar    NexStar GPS / CPC Telescopes   Questar Forum   Meade ACF/RCX / LX / GPS    Meade ETX*Speciality Forums* -----   Arizona Science and Astronomy Expo   NEAF (Northeast Astronomy Forum) and NEAIC (Northeast Astro Imaging Conference)   AstroArt   Astronomy Clubs and Star Parties   Astronomy Software & Computers   AstroWebsites   Science! Astronomy & Space Exploration, and Others   Space Rocks   Stellar Media*Swap and Shop* -----   Shop and Swap Audio Components*CN Feedback and Vendor Announcements* -----   Vendor and Group Announcements*International Year of Astronomy 2009 - Forums are now closed.* -----   IYA Archive Info

CN Forums Home