Jump to content


Sun Spot 1019 from 4 June 09

This topic has been archived. This means that you cannot reply to this topic.
4 replies to this topic

#1 John J

John J

    Viking 1

  • *****
  • Posts: 705
  • Joined: 05 Nov 2007

Posted 04 June 2009 - 12:57 PM

This is a close up of Sun Spot 1019. It was taken using a Baader mylar film filter on a 6" F5 reflector. The Canon XSi camera was at prime focus. ISO 400 and shutter at 1/4000, Single image. Area was cropped out of a 12 mega pixel image to 640 x 480 and processed with photo shop. False colour added for enhancement. I was surprised at all of the granulation the camera picked up that you don't see by eye.

Posted Image

#2 nirvanix


    Surveyor 1

  • -----
  • Posts: 1777
  • Joined: 07 Jun 2007

Posted 04 June 2009 - 02:45 PM

Excellent shot John, I will have to try this.

#3 David Knisely

David Knisely


  • *****
  • Posts: 15827
  • Joined: 19 Apr 2004

Posted 04 June 2009 - 03:39 PM

Hi John (glad to see the image of your scope in your avatar, and hope you are coming back to NSP this year). The image is rather nice, as it clearly shows granulation. The number "1019" refers to the so-called "active region number" for the entire group (the "active region") and is not assigned to a sunspot (one could wonder which spot out of the five you show is "1019"). This little problem with the use of active region numbers is a common one, as even Spaceweather.com keeps getting it wrong. Clear skies to you.

#4 Dean Norris

Dean Norris

    Surveyor 1

  • *****
  • Posts: 1664
  • Joined: 05 Nov 2008

Posted 04 June 2009 - 04:06 PM

John, Cool image. Thanks for posting. Dean

#5 John J

John J

    Viking 1

  • *****
  • Posts: 705
  • Joined: 05 Nov 2007

Posted 04 June 2009 - 06:27 PM

Hi Dave,
Yes I am planning on attending the NSP for the full week this year. I will also be trying some AP this year as I have a new 120mm APO EON rig now. Can't wait to get to some really dark skies. Hope to see you soon.

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.

Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics