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M16 The Eagle Nebula.

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M16 The Eagle Nebula.

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3 Comments


  1. KBALLZZ

    August 28, 2017 at 12:37 am

    Nice image! To improve resolution and really bring out the pillars at that focal length, you’ll likely need many more exposures. To get lots of exposures easily many of us are going the high-gain route with this camera. Try something like 200 gain 50 offset and expose around 3 minutes (or however long you need to bring the signal off the noise floor). That way you can easily bring in 100 exposures within a few nights. To further improve resolution you can drizzle integrate, but you need many dithered exposures for that to work well.
    As far as the weird star shapes, I’m on mobile so I can’t tell for sure, but some WO scopes (such as mine) are plagued with “crunchy star” shapes. It is inherent to the design and can really only be fixed by using a stop-down ring to decrease the aperture a stop. I hope that is not your issue but it is something to investigate!
    Edit: I noticed you are binning 2×2, do not bin with this camera! That may be ruining your resolution as well. Reason being is that it is software binning, and applied to the image the same way you would downsample in post-processing. I’m no expert on this topic but it has been discussed in length on CL.

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  2. daneoid

    August 28, 2017 at 12:37 am

    Taken during the last few days in Byron Bay, NSW, Australia. First Time using a Mono Camera and narrowband. I noticed I didn’t quite get the detail of the Pillars as some other submissions here,
    If anyone could provide some pointers as to why, I’d appreciate it.

    **Equipment:**
    OTA: William Optics GT81 20th Anniversary edition.
    Mount: Celestron AVX.
    Camera: ZWO ASI1600MM-C.
    Guide Scope: William Optics 50mm Guide scope.
    Guide camera: Orion Starshoot Autoguider.
    Filters: ZWO Ha Filter, Astronomik OIII and SII Filters.
    Accessories: QHY Polemaster. William Optics field flattener. ZWO Mini Filter Wheel.
    Software: Sequence Generator Pro for Capture. PHD2 for guiding.

    **Imaging and Processing.**
    20x600sec in Ha, 2×2 Binning.
    15x600sec in OIII, 2×2 Binning.
    15x600sec in SII, 2×2 Binning.
    85x Bias Frames.
    40x Dark Frames.
    20x Flat for each Filter.
    8.3 Hours integration.
    Stacked and Processed in Pixinsight.

    Reply

  3. Nerdenator

    August 28, 2017 at 12:37 am

    I wish I lived somewhere where I could get that sort of shot. Midwestern cities are too bright and too humid most of the year. I wonder if there’s a place within a day’s drive of KCMO where I could practice this sort of photography.

    <s>Also, the Eagle Nebula is named after the ‘Merican service rifle. Checkmate, communists </s>

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