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DaveS

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Posts posted by DaveS

  1. OK, here we go, in chronological order.

    HCG 44, the Leo Quartet

    HCG44.thumb.png.f7267eef5b935cfa6598e2b388c78ad5.png

     

    M64, The "Black Eye Galaxy"

    M64.thumb.png.9bb4cc148472dbfe231befe6356826c8.png

     

    The "Bubble Nebula in SHO

    BubbleNebula.thumb.jpg.8d069fcfe612c5975c510989279ef6b1.jpg

     

    M92, the only Globular that I maged this year

    M92.thumb.png.aca89ab52831ba119073c3db4ea8dd9c.png

     

    Finally HCG 92, Stephan's Quintet

    HCG92.thumb.png.12ab40fa920a95778985306cea776e21.png

    All captured with the ODK12, the Bubble in SHO with the G3 16200, all the others in LRGB with the SX Trius 694.

     

    • Like 11
  2. AKA HCG 61, reworked with Blur XT ver 2 and AI4. Captured with the SX 694 on the ODK 12. 6 hours L and 2 hours each RGB on the 21st and 24th May this year at the end of Galaxy Season.

    Version 1

    HCG61.thumb.png.8dfa89abdf2a65c7cf54cd68fe65e325.png

     

    Version 2

    HCG61ver2.thumb.png.32a881580c5b9efa0c6b5b4607c6771c.png

    I think there's a bit more detail coming through in Version 2 but it needs to be looked at full size on a good monitor to see.

    • Like 10
  3. I've had to call a halt to this as by the time I can collect more data it will be getting too far west, so...

    3 hours Luminance (Bin 1) and 1 hour each RGB (Bin 2) through Baader Bessel filters with a new ASI 533 on the ODK 12 as an experiment.  A bit of a disaster as they have huge halos. Nothing like enough data and it shows. Stacking, Gradient Reduction and basic RGB combination in AstroArt 8. Darks, Flats and Flat Darks but no Bias as it stuffed up the calibration.

    Then SPCC (On the RGB), Blur Xterminator, Masked Stretch and Noise Xterminator in PI, then back to AA8 for a gentle Histogram Stretch and LRGB combination. A bit of selective Magenta reduction to tame the halos a bit. Saved as a PNG.

    HCG10TempFinished.thumb.png.0cf42384c11568fd1813d741ff4101c3.png

    For reference, that blazing searchlight bottom centre is mag 6.3 reduced to 6.58 by air mass according to Stellarium. North is up.

    • Like 9
  4. Of the LRGB sequence I started, the 3 hours of Luminance were OK, but nowhere near enough, the 6 Red subs were OK, but only 5 of the Green were anything like OK. The sky had clouded over by that time so the last Green sub was a write off and I shut down and went to bed before the Blue run got going.

    I have no idea when I might be able to collect any more data so here is the result of 3 hour Lum on HCG 10, ASI 533MM, 600 sec subs, Gain 100, Offset 60. WBPP, BlurX, Masked Stretch, NoiseX in PI, then a gentle Histogram Stretch in AstroArt  8

    18SubLumMBPPBXMSNXHS.thumb.png.1f12266515f5af5df89820c5cbc7bca2.png

    • Like 3
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