Recent Blogs Posts

  1. need a little help processing M31 image

    by , 08-10-2017 at 06:01 PM
    I just saw the blue halos on some of the stars. It was not apparent on my computer at home, possibly due to the gamma differences with a PC vs. Mac. I would dial that back given the chance.

    Quote Originally Posted by JohnP_1 View Post
    Hi Joe, thanks for the chance to work with your data. It is indeed fine. This was processed in Nebulosity and Photoshop.

    Have you Built a Roll-off Roof Observatory?-m31-30jul17-119x60s-f32-at80-tig.b.jpg
  2. Stargazing tonight with friends

    by , 08-05-2017 at 08:50 AM
    On our way to Warburtons Creek to study the heavens tonight
    Have you Built a Roll-off Roof Observatory?-20170805_182310.jpeg
  3. Star-gazing tonight with friends

    by , 08-05-2017 at 08:16 AM
    I'm taking some friends out to Warburtons Bridge tonight for camping and stargazing. It's going to be cold but worth it. I'll keep you all posted on our nights events and findings with photos
  4. The Eagle nebula (M16) taken 7/31/17

    by , 08-03-2017 at 02:17 PM
    I agree, this camera is well-suited to this role. My window on the sky does not really work with separate RGB imaging. The Kodak KAF-8300 sensor is used in a number of cameras very successfully including the black and white version that is still sold to my knowledge. It provides a somewhat smaller FOV than my DSLR, however, it still provides a very adequate resolution for my seeing conditions. Several cameras these days are coming in with much higher pixel counts, however, the images end up ...
  5. The O III filter does wonders on the Lagoon Nebula

    by , 08-02-2017 at 07:08 PM
    Quote Originally Posted by j.gardavsky View Post
    Quote Originally Posted by not_Fritz_Argelander View Post
    This is an extremely interesting suggestion that makes excellent sense on physics grounds!
    Hello not_Fritz,

    these are not only the blue Balmer Series lines, but also lots of other ionized gases, even if these other lines are weak,
    Spectroscopy of planetary nebulae

    Moreover, this filter passes also the OIII doublet, Teleskop-Express: Baader CCD-Filter Blau - 1,25" - Interferenzfilter

    Around 2012-13, there used to be a small group
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