Jump to content

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Io Transit near opposition

  • Please log in to reply
10 replies to this topic

#1 Mike Phillips

Mike Phillips


  • *****
  • topic starter
  • Posts: 3630
  • Joined: 21 Feb 2006
  • Loc: Swift Creek, NC - 35.682 N, 78.743°W

Posted 04 December 2012 - 10:49 AM

I got out 4 of 5 nights in a row for average conditions. I'm working of a HUGE backlog, but this one was worthy of posting.


Attached Files

#2 Sunspot


    Fly Me to the Moon

  • *****
  • Posts: 6416
  • Joined: 15 Mar 2005
  • Loc: Surprise, AZ

Posted 04 December 2012 - 11:43 AM

Very nice!! I hear ya on the back log...I'm working on Oct 28 images right now and my 1TB hard drive is almost full of unprocessed images. :tonofbricks:


#3 DesertRat


    Fly Me to the Moon

  • *****
  • Posts: 5567
  • Joined: 18 Jun 2006
  • Loc: Valley of the Sun

Posted 04 December 2012 - 03:20 PM

Thats a beauty Mike! Backlog sounds too much like work. :)


#4 Mitchell Duke

Mitchell Duke


  • *****
  • Posts: 3268
  • Joined: 22 Apr 2008
  • Loc: Georgia

Posted 04 December 2012 - 04:21 PM

Great job Mike!!

#5 Eddgie



  • *****
  • Posts: 16381
  • Joined: 01 Feb 2006

Posted 04 December 2012 - 05:34 PM

Hi Mike.

Thanks for posting.

In fact there is a big "debate" on the Solar System and Lunar observing post regarding reports of seeing Io as a "football" and your image shows this beautifully.

I had reported seeing albedo features on Io visually a couple of weeks ago and mentioned that it gave Io the look of a tiny yellowish pearl.

Someone else that may have been somewhat skeptcial later saw (to his admitted surprise) the exact same effect using a smaller scope.

And someone else reported seeing Io as looking a bit stretched out using an even smaller scope and the scope itself was small enough that the feat seemed to some unlikley.

But your image shows perfectly what I reported, and in that thread, I have used it as evidence that suggest that even in a small aperture, diffraction of this bright central band displayed in your picture could explain how someone with a very small scope could actually see Io as being slighly out of round.

So, linked to your picture and greatly appreciate you posting it.

I constantly refer to the previous nights images afer a session to confirm my observations, and someone else had posted a similar picture showing the north and south limbs as being lower in contrast than the cental equitorial region, and your picture shows this oh so beautifully.

Thanks for posting. A great image and just in time for the other thread!

#6 lcd1080



  • -----
  • Posts: 1000
  • Joined: 03 Jun 2010
  • Loc: Maryland, USA

Posted 04 December 2012 - 09:01 PM

Io looks like it's rolling over Jupiter's cloudtops; the quality and angular relationship between Io and Jupiter make this image one of my favorites of the year. Great timing and capture skill Mike!


#7 Az Frank

Az Frank

    Surveyor 1

  • -----
  • Posts: 1882
  • Joined: 18 Oct 2008
  • Loc: Tucson Arizona

Posted 04 December 2012 - 09:47 PM

Excellent catch Mike!

#8 tjensen



  • -----
  • Posts: 2612
  • Joined: 16 Feb 2005
  • Loc: Chapel Hill, NC

Posted 05 December 2012 - 11:48 PM

Hey Mike, nice job.
I don't want hijack your thread, I wasn't going to post this image... I shot it with the 10" on 11/30, the night before I shot the ISS. I just want to show that the shadow of Io has shifted sides. Wish I'd had the camera on the C14 now!

Attached Files

#9 karlo


    Viking 1

  • -----
  • Posts: 932
  • Joined: 21 May 2009
  • Loc: Yorkshire,UK, BLIGHTY !!

Posted 06 December 2012 - 03:47 AM

well done Mike that's a cracking capture !

#10 bunyon



  • *****
  • Posts: 3650
  • Joined: 23 Oct 2010
  • Loc: Winston-Salem, NC

Posted 06 December 2012 - 07:57 AM

Great shot, Mike.

And I like the comparison image, Tim - very cool to see the switch.

#11 sfugardi



  • -----
  • Posts: 3269
  • Joined: 30 Sep 2006
  • Loc: CT

Posted 06 December 2012 - 12:39 PM

Mike, excellent image! Io detail and shadow are very nice, it almost appears that Io was ripped from the globe with a "hole puncher" leaving behind the perfect black circle. Thanks for posting


CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Recent Reviews

Imaging/Sketching Contest

Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics