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Yawning Angel

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Posts posted by Yawning Angel

  1. 3 hours ago, vineyard said:

    Was it tricky aligning the mono channel images for the combination

    imPPG does the heavy lifting once you have the RG&B. Assuming the focus is about the same on each, the fringing should be minimal

  2. A very cold and clear evening for the Wolf moon

    asi178mm / RGB filters / APM 107

    2000 frames 50% stacked, processed in AS!3, Registax, imPPG and PixInsight

    LRGB.thumb.jpg.b9c6a1d9e079d5c9c6e8d74734cff895.jpg

     

    • Like 15
  3. This was compiled from 27 stacks (2000 each) with an APM 107/700 x2.5 barlow and asi178mm (green filter). 161 gb of SER files too my olde i7 some time to chew through!

    Click for full size (around 9000 x 9000)

    PSstitch2.thumb.jpg.41812a0b9141dcf3b3011b90b0db7422.jpg

     

    • Like 1
  4. 1 hour ago, powerlord said:

    any other tips ?

    Choose your path first, and stick to it. A 'Z' path has less slewing, and is faster but I find I can forget which panel is next if I'm distracted for a moment. An 'E' path mean the next from is always to the right 🙂

    Allow plenty of overlap, it's easy to forget the vertical and get fixated on the horizontal when doing it manually.

    Make sure your exposure take in account the awfully bright areas, which can sneak up on you, 8 panels in 🙂 

    Try your green filter, you might find it sharper if the seeing is favourable

    Never try and do this with a full RGB pass - your sanity won't survive!

    • Like 2
  5. "I'll be back in a minute, I'm just going to open up the observatory for later"

    Bwahaha, 3 x 1000 frames shouldn't take a moment, then back inside before I'm missed 🙂

    asi1600mm ROI / RGB filters. 50% stacks. Processed in AS!3, imPPG and Pi

    Of course I paid for it later, when my guiding wasn't so good, and I realised I'd forgotten to reset the tracking rate. Karma bites!

    740665882_Processed11-01-22.thumb.png.ef7e2bd8af0cc52dc6d6f9c984432edc.png

    • Like 2
    • Haha 1
  6. Imaged as a session ender last night - The Horsehead Nebula along with the annoyingly bright Orion's belt star, Alnitak. Also featuring the flame nebula

    1 hour of 2 min subs, asi1600 / apm 107/700, Baader 7nm Ha

    Had the usual massive halo around our friend Alnitak, but a bit of Photoshop seems to have rendered it presentable - microlensing artefacts I can live with 

    12988514_1hrHa2.thumb.jpg.1c8741d01b3102a8654001148ad54fdc.jpg

    • Like 14
  7. Quick and dirty M42 from last night, captured while processing some lunar data. I wasn't expecting much, and was really just a trail of the FOV.

    5 min each channel of 30 second exposures, live stacked in Sharpcap. Salvaged from noise hell by Topaz DeNoise (yes, cheating!)

    APM 107/700 + asi1600mm / LRGB

    349509112_M425minperchannel.thumb.jpg.49def1dfb3e08eb3eb0d84b41a20ba2a.jpg

    • Like 7
  8. Last night’s moon, with @Uplooker's loaned APM 107/700. A test after transplanting my Sesto Senso 2

    Of course, once I slewed to an actual target, clouds appeared out of nowhere 🤪
    ZWO asi1600mm / RGB filters. 50% of 500 each

    A real unlooked for joy was combining the RG and B and finding no appreciable colour fringing! Lovely optics!

    1692695735_107-70013-11-21.thumb.jpg.f224a6f39583e2eec5174898ed55c0eb.jpg

    • Like 12
  9. I've been very kindly loaned an APM 107 / 700mm (thank you @Uplooker), so after transplanting the imaging train from my Skywatcher 80ED I was desperately on the lookout for a clear evening!

    30/10 wasn't awful although the relative humidity was showing 95% and stars a bit 'twinkly', it was better than solid cloud! 

    Setting the rig up in NINA was trouble free, once I got my head around the already installed Lakeside focuser (I've a Sesto Senso on the 80ED). Weirdly the heavier tube seemed much easier to balance on the CEM60 (guiding was a little better too)

    M33 seemed a nice fit for the FOV (the scope has a x1 flattener). To have a usable dataset in the time I went for 15 x 120sec each LRG&B with asi1600mm @ -15degrees. 2hrs total, plus darks, flats & dark flats. Would have loved a run at the Ha regions, but perhaps another night. Processed in PixInsight an resampled 50%

    M33.thumb.jpg.cb1889f315e3a7496f17f48d6ce91b83.jpg

     

    • Like 20
  10. The California Nebula: My first foray into creating a deep sky mosaic, to see how the process works. This is 2 panels each of 6 x 300sec with an Evostar 80Ed / asi1600mm  x.85. 

    N.I.N.A. handled the framing and sequencing perfectly - the manual rotator prompts where especially helpful! The usual raft of darks, flats and flatdarks (library files, not fresh)

    My first try getting PixInsight to mosaic it didn't looks so good, but good old MS Ice happily obliged to give something useable. As a practice, I think the acquisition was successful at least

    stitch2b.thumb.jpg.d49abc01b603716dddfe4df93cd6c78e.jpg

    • Like 6
  11. A wobbly orb, capture through rather moist air last night. 25% each channel of 1000 frames RGB.

    After stacking and aligning, this was combined in PixInsight and the colours balanced and gently saturated with successive curves. Slight colour fringing removed with SCNR Green / Invert / SCNR Green / Invert back

    Click for the full image
    92355446_Image04_clone-Copy.thumb.jpg.323853dfb4d7f2c27bd1ffd34758cdc6.jpg

    • Like 3
  12. I had intended to get some DSO work done tonight...but, yeah, weather. However, I did manage to grab a quick 1000 frames each RGB as the moon played hide and seek

    I then slewed to my intended target, got clouded out, parked the scope to wait it out then had to slam the obs roof due to a sudden downpour! Wiped everything down, dehumidifier on -  so got on with processing this instead

    Hunter’s Moon: asi1600mm / 80ED @510mm (not ideal, but it was mounted)

    Inverted shows it off nicely:

    Inv.thumb.jpg.bb55c8936d9b4f93b0f0595b0f9c6eb4.jpg

    A little drab, even with the saturation pushed

    Col.thumb.jpg.467f604002e8fda0b1f30b4c8e773b2a.jpg

     

    • Like 5
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