Bristlecone Pine Star Circle *Explored*

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    Steven's Tree and Star Circle (19 exposures, 8 minutes each ISO 100 so a total of 2 hours and 32 minutes). First exposure was at 10:53 pm, the last at 1:18 am. Long exposure noise reduction OFF. f/4, 23mm.

    NOTE: I have reprocessed this image and I like the (son of ) Bristlecone Pine Star Circle a bit better. See what you think.

    If you're itching to do this kind of photography yourself, please visit Star Circle Academy.

    To get this shot, I set up before sunset with a programmable timer (intervalometer) delayed 4.5 hours - so it started exposing at 10:53 PM. Moon set was at 11:55 so most of the exposures included moon glow - either direct illumination or skyglow.

    After pressing the "start" button I drove back to Grandview Campground and went to sleep. These things are hard work :-) I got up at 3:00 am to go fetch the camera. It managed about 21 images before the battery gave out. I was hoping for about 4 hours worth. It was about 33 degrees Farenheit. The upside to the cold temperature is that it helped to keep the camera noise very low..

    I used Digital Photo Professional (comes with the Canon DSLR cameras) to export 19 images as JPG files with little or no adjustments. I then used the excellent freeware program "startrails" by Achim Schaller to stack (combine) the images. This program takes the brightest pixel from each image and includes that pixel in the final image. Since the sky is very dark, the brightest spot on each shot is usually a star. Photoshop CS4 Extended has a "statistics" tool with "Maximum" that does something similar. Startrails.exe, however, is much easier and much faster than Photoshop for this purpose. Startrails also includes a "dark frame" feature to help set the black level and reduce noise.

    After combining all of the images and producing a single TIFF file, I sharpened it and did some contrast improvements using Picasa3 - another free and quite powerful program. The primary enhancement was to increase the highlights and to slightly increase the shadows. This action alone brought out the color in the stars (and YES, stars do shine in red, yellow, orange, blue, and white). I'm sure I also adjusted the white balance slightly to "warm" the photo. My final action was to clone out the few odd bits of noise that remained. I used Picasa3's "retouch" feature for this.

    This photo was taken during an outing of the Bay Area Photography and Exploration Society which I led. More details about my star trail photography technique are available via my Star Circle Academy BLOG or in my Short Treatise on Night Photography.

    You may also find my timelapse treatment of this photo interesting and very short.

    -- Copyright 2008, Steven Christenson
    I reserve all rights of use for this (and all) my photography. Specifically copying, printing, reproduction, reuse or storing of this image are not permitted without my permission.

    Featured in Explore #9 on 2008/10/08

    The Man in Red, phamu, Harold Davis, and 155 other people added this photo to their favorites.

    View 14 more comments

    1. Jeffrey Sullivan 65 months ago | reply

      Cool shot. Thanks for the technique/software details.
      Jeff (Cisco alum '98-'03)

    2. -cr 64 months ago | reply

      Way cool, and beautifully composed, too!
      Thanks a lot for the setup info!

    3. aimhelix 64 months ago | reply

      Brilliant technical work! Very cool picture indeed.

      --
      Seen on your photo stream. (?)

    4. blablablablablablalblablbabla [deleted] 61 months ago | reply

      fantastic!

    5. byrne.images (out on assignment) 61 months ago | reply

      Cheers, a most stunning composition!
      I shoot a Rebel XTI, no real noise reduction to speak of...and what's the word on sensor burn for long exposures?? These images are what I aspire to produce and in small steps I'm getting there...
      Sure appreciate the excellent exhibits!

    6. Lens Cap Tony 60 months ago | reply

      tis a great shot :o)

    7. JPBJr. 57 months ago | reply

      Please add this picture & any other pictures of Northern California or taken by a Northern California photographer (world wide) to:
      www.flickr.com/groups/1124231@N24/

    8. WarzauWynn 57 months ago | reply

      Awesome shot. :) Thanks for the detailed info too, good ideas to consider.

    9. DM Weber 57 months ago | reply

      Impressive work there. When you snooze, you don't always lose, so another cliche bites the dust.

    10. Abe K 57 months ago | reply

      Excellent work!

      Thank you for sharing
      your photo with us!

      Sun Dial Bridge - 090428-027+
      Northern California Photography

    11. jeandayphotography.com 57 months ago | reply

      Excellent. I especially like the old tree branches for the foreground. Thanks for the tips.
      Thank you for sharing
      your photo with us!

      Sun Dial Bridge - 090428-027+
      Northern California Photography

    12. Lasitha Wicks 56 months ago | reply

      excellent capture..

    13. Ningaloo :-) 55 months ago | reply

      Steven, this is awesome.

      Your detailed notes are very useful too. It is encouraging to know that such an image can be created solely with freeware. I think Picasa 3 is massively under-rated.

      I hope to be able to produce an image such as this, albeit without the spectacular backdrop!

    14. Steven Christenson 55 months ago | reply

      Thanks Ningaloo. In my opinion, the spectacular foreground is what really makes a compelling star trail. Check out the many excellent examples in the Star Trails pool.

    15. vidarkrist 52 months ago | reply

      this one is very good. I like very much photographing stars and specialy startrails. I would like if you gave your opinion on this one.
      www.flickr.com/photos/vidarkrist/1527446964/

      I am wondering about the work after. What is a good method to fix the noise etc...

    16. Steven Christenson 52 months ago | reply

      vidarkrist - in the description of the photo I provide a link to how I create star trails, including how I manage noise and process my images. There is also the group "Star Trails" where several discussions may help you.

    17. Pheno Me Non 52 months ago | reply

      Very nice and thanks for the tutorials. Great shots and processing!
      --
      Seen on theamusing.com ( ?² )

    18. Mathieu Soete 49 months ago | reply

      Interesting foreground to match those spectacular star trails!

      Selected your picture as one of 9 for my startrails composition (in the series Weekly Favourites)

      [https://www.flickr.com/photos/25949002@N06/4502392519/]

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