Jump to content


Photo

Lunar X - Purbach X

  • Please log in to reply
82 replies to this topic

#51 Dave Chapman

Dave Chapman

    Mariner 2

  • *****
  • Posts: 251
  • Joined: 27 Jan 2007
  • Loc: Halifax, Nova Scotia, Canada

Posted 10 December 2012 - 01:42 PM

Great sketch, Dave! :grin:


Thanks, Carol, you taught me all I know, :bow: but I think I can do better. I was making pretty rough sketches to capture the evolution of the X, not trying too hard to include all the subtle variations in grey level. It was pretty cold out!

Dave

#52 Danzup77

Danzup77

    Viking 1

  • -----
  • Posts: 691
  • Joined: 12 Sep 2011

Posted 19 December 2012 - 12:12 AM

Hey all, just noticing this post now unfotunately. What about the Curtiss-X predictions for 2013? Im just having no luck at all locating them.

#53 Tom and Beth

Tom and Beth

    Soyuz

  • -----
  • Posts: 3640
  • Joined: 08 Jan 2007
  • Loc: Tucson, AZ

Posted 19 December 2012 - 01:56 AM

Hey all, just noticing this post now unfotunately. What about the Curtiss-X predictions for 2013? Im just having no luck at all locating them.


See post #5565291

#54 azure1961p

azure1961p

    Voyager 1

  • *****
  • Posts: 10352
  • Joined: 17 Jan 2009
  • Loc: USA

Posted 19 December 2012 - 08:07 AM

Here's my rough drawing from 9:30 p.m. AST. I used a 12" Sky-Watcher f/5 with a 6 mm eyepiece for 250x.

nice work Dave!
Pete

#55 rookie

rookie

    Good Night Nurse

  • *****
  • Posts: 3047
  • Joined: 14 Jan 2006
  • Loc: St. Petersburg, FL

Posted 03 January 2013 - 10:54 PM

Do the Lunar X features appear when the moon's waning terminator crosses the same coordinates? :question:

#56 Carol L

Carol L

    Fly Me to the Moon

  • *****
  • Posts: 7257
  • Joined: 05 Jul 2004
  • Loc: Tomahawk, WI 45N//89W

Posted 04 January 2013 - 01:53 AM

Do the Lunar X features appear when the moon's waning terminator crosses the same coordinates? :question:


Yes it does - see the Purbach Cross (Lunar X) - Sunset Viewing Project thread in this forum. I posted a composite picture comparing the sunrise and sunset views.

#57 rookie

rookie

    Good Night Nurse

  • *****
  • Posts: 3047
  • Joined: 14 Jan 2006
  • Loc: St. Petersburg, FL

Posted 04 January 2013 - 07:14 AM

Thanks, Carol. I thought you were still referring to the waxing moon in that thread. I ' ll re-read. :thanx:

#58 hoglahoo

hoglahoo

    Lift Off

  • -----
  • Posts: 11
  • Joined: 01 Dec 2010

Posted 15 February 2013 - 10:51 AM

Took this image through my 8" dob last winter

Attached Files



#59 Tom and Beth

Tom and Beth

    Soyuz

  • -----
  • Posts: 3640
  • Joined: 08 Jan 2007
  • Loc: Tucson, AZ

Posted 16 February 2013 - 05:28 PM

Good job. Just a little up from your pic top is the Lunar "V". You have a chance to catch this again tomorrow (Sunday the 17th of Feb). Here in Tucson it occurs at 3:30 in the afternoon, but at 49 degrees Alt it should be visible.

#60 67champ

67champ

    Viking 1

  • -----
  • Posts: 582
  • Joined: 03 Jul 2006
  • Loc: Ohio, USA

Posted 17 February 2013 - 09:58 AM

Looks like I can expect clouds where I'm at... Maybe I'll see something before it's too late...

dana t

#61 Dave Mitsky

Dave Mitsky

    ISS

  • *****
  • Moderators
  • Posts: 35707
  • Joined: 08 Apr 2002
  • Loc: PA, USA, Planet Earth

Posted 17 February 2013 - 07:39 PM

I just came in from a very cold and blustery evening. I've been observing the Moon and Jupiter with one of my small telescopes, a 6" f/8 Orion SkyQuest XT6 Dob. The Lunar X and Lunar V are nicely visible at the moment.

Dave Mitsky

#62 rookie

rookie

    Good Night Nurse

  • *****
  • Posts: 3047
  • Joined: 14 Jan 2006
  • Loc: St. Petersburg, FL

Posted 17 February 2013 - 08:15 PM

I took this picture tonight through the 9mm lens in my TV85.

Attached Files



#63 Tom and Beth

Tom and Beth

    Soyuz

  • -----
  • Posts: 3640
  • Joined: 08 Jan 2007
  • Loc: Tucson, AZ

Posted 17 February 2013 - 09:04 PM

Very easy tp observe from Tucson. I started out to get pics..then dropped the camera. gaddabit....

Amazing how easy it was to observe the "V" and "X" even in bright afternoon Sunlight. The 50MM Finder was the only optics that I had to work at to observe with. Also used a TV-76, TEC 140, TEC 250/12 MC

#64 Dave Chapman

Dave Chapman

    Mariner 2

  • *****
  • Posts: 251
  • Joined: 27 Jan 2007
  • Loc: Halifax, Nova Scotia, Canada

Posted 17 February 2013 - 10:55 PM

Nice! It reminds me of my first view back in August 2004.

Dave

#65 Dave Mitsky

Dave Mitsky

    ISS

  • *****
  • Moderators
  • Posts: 35707
  • Joined: 08 Apr 2002
  • Loc: PA, USA, Planet Earth

Posted 18 February 2013 - 03:49 AM

Here's an afocal photograph of the Lunar X and Lunar V that I took using the 6" Orion Dob mentioned earlier and a Canon PowerShot SD980 IS camera. Lunar north is up.

Dave Mitsky

Attached Files



#66 Dave Mitsky

Dave Mitsky

    ISS

  • *****
  • Moderators
  • Posts: 35707
  • Joined: 08 Apr 2002
  • Loc: PA, USA, Planet Earth

Posted 18 February 2013 - 03:51 AM

This is a close-up of the Lunar X and Lunar V that I took a bit later. There appears to be a second Lunar X between the two.

#67 REC

REC

    Fly Me to the Moon

  • *****
  • Posts: 5142
  • Joined: 20 Oct 2010
  • Loc: NC

Posted 18 February 2013 - 10:26 AM

It was really bright last night at 7pm here. Best I have ever seen and I was just using my 80mm. There was another X type object just below it too, but thinner I think.

Glad I took the scope out for a quick view as it was very cold out, but very clear and I'm a sucker for those skies:)

Bob

#68 REC

REC

    Fly Me to the Moon

  • *****
  • Posts: 5142
  • Joined: 20 Oct 2010
  • Loc: NC

Posted 18 February 2013 - 10:28 AM

Great, just what was looking at through my 80ED with 9mm.

Bob

#69 stevenwav

stevenwav

    Mariner 2

  • *****
  • Posts: 274
  • Joined: 06 Feb 2012
  • Loc: New England

Posted 18 February 2013 - 12:09 PM

I remember reading about this last year and just happened upon it last night -clear as day between clouds and 7P-8P (East Coast). I was binoviewing with my TEC-140. Very very cool!

#70 RobDob

RobDob

    Messenger

  • -----
  • Posts: 492
  • Joined: 10 Apr 2010
  • Loc: Brentwood (East Bay Area), CA

Posted 18 February 2013 - 10:42 PM

Lunar X2? Brilliant! Good capture, Dave. Off to find out out what craters those are for X2....

Rob

#71 RobDob

RobDob

    Messenger

  • -----
  • Posts: 492
  • Joined: 10 Apr 2010
  • Loc: Brentwood (East Bay Area), CA

Posted 18 February 2013 - 10:44 PM

Nice crisp shot, Rookie!

Rob

#72 NeilMac

NeilMac

    Gemini

  • -----
  • Posts: 3182
  • Joined: 25 Sep 2010
  • Loc: MedHat, AB, Canada

Posted 19 February 2013 - 04:15 PM

i missed out again due to clouds but did get a partial the next afternoon LOL.

Attached Files



#73 Dave Mitsky

Dave Mitsky

    ISS

  • *****
  • Moderators
  • Posts: 35707
  • Joined: 08 Apr 2002
  • Loc: PA, USA, Planet Earth

Posted 19 February 2013 - 04:32 PM

Lunar X2? Brilliant! Good capture, Dave. Off to find out out what craters those are for X2....

Rob


Thanks, Rob. Phil Harrington investigated the location before I got around to it and reported that the second X "is formed by the craters Gylden (crater on the right), Sporer (top), and maybe Herschel (left, in shadow)."

http://www.facebook....0720782?fref=ts

Dave Mitsky

#74 rookie

rookie

    Good Night Nurse

  • *****
  • Posts: 3047
  • Joined: 14 Jan 2006
  • Loc: St. Petersburg, FL

Posted 19 February 2013 - 06:35 PM

Nice crisp shot, Rookie!
Rob

Thank you Rob! I just use my little Cannon S100 camera mounted on a Celstron digital camera adapter. It screws over the outside of the eyepiece. You adjust the telescope to best focus for your eyes and let the camera do the rest. The lighted side of the moon is a bit over exposed. I could probably learn to use other options than the fully automatic mode, but this is simple and fun. :)

#75 Greyhaven

Greyhaven

    Surveyor 1

  • *****
  • Moderators
  • Posts: 1861
  • Joined: 11 May 2004
  • Loc: 16 miles south of the Buckfield Mall

Posted 29 June 2013 - 02:36 PM

Hernando.
Way back in December of 2012 you asked if I still had a photo of the first lunar X I ever caught. I said it was lost on a hard drive a long time ago.I found it. It was shot through a Sony point and shoot digital in August of 2004. Using my then brand new Nexstar5i I wont even try to remember the eye piece.
So here it is if you still care.
Be Well
Grey

Attached Files








Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics