JohnP_1

  1. The Iris Nebula (NGC 7023) (a single night)

    by , 11-16-2017 at 02:00 PM
    Thank you Jerry! This will be helpful as I try again. 99.9% of my imaging for the last 1-1/2 years with the Atik have not included flat frames, so I am interested in how they might improve things. I enjoy the impact they bring to my DSLR work.

    I use a LED light panel together with a t-shirt over the OTA normally. The DSLR easily adjusts to this. I found the issue described regarding the camera shutter too. I wasn't able to dial in SGP to do this well; the Flats wizard was ...
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  2. need a little help processing M31 image

    by , 08-10-2017 at 07:01 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
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  3. The Eagle nebula (M16) taken 7/31/17

    by , 08-03-2017 at 03:17 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 ...
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  4. Bodes & Cigar Galaxies

    by , 03-04-2017 at 01:27 AM
    Hi Val. A very nice rendition! Well done.

    I tweaked this version a bit. I don't know what tool you use to process other than PS. With very large DSLR images, you are very likely over-sampling your targets due to the local seeing conditions. (The image scale of your imager and OTA should be around 1/2 of your local seeing conditions). With the size of your images, they will benefit significantly from software-binning the image.

    I software-binned the image using ...
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  5. M31 reprocess - StarTools

    by , 02-01-2017 at 01:18 PM
    I forgot to mention that I did raise the gamma a smidge before the final step. Sorry I forgot to mention that.

    Quote Originally Posted by JohnP_1 View Post
    Here is what I came up with. Note that I first convert the jpeg to a 16 bit image removing the jpeg artifacts. Also, I included a snapshot of when I adjusted one of the color curves to give you an idea of what I'm talking about. With the Carboni actions for PS, I edited all or most of them to delete the conversion to 8 bit mode that he included in most. I only convert
    ...
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