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I agreeImaging telescope or lens:Stellarvue SV80-3SV
Imaging camera:ZWO ASI1600MM Pro
Mount:Sky-Watcher EQ6R-Pro
Guiding telescope or lens:Stellarvue F050G
Guiding camera:ZWO ASI178MM
Software:PHD2, Aries Productions Astro Pixel Precessor, Pleaides Astrophoto PixInsight 1.8 Ripley, N.I.N.A. N.I.N.A
Filters:Astrodon Gen 2 Series I Green, Astrodon Gen 2 Series I Blue, Astrodon Gen 2 Series I Red
Accessories:Pegasus Astro Pocket Powerbox, ZWO Filterwheel EFW 7x 36mm, Dew-Not DN004 Dew Heater Strap, Moonlite NiteCrawler WR30, Goal Zero Yeti 400
Resolution: 3204x1965
Dates:Sept. 22, 2019, Sept. 24, 2019, Sept. 26, 2019
Frames:
Astrodon Gen 2 Series I Blue: 590x20" (gain: 76.00) -15C bin 1x1
Astrodon Gen 2 Series I Green: 548x20" (gain: 76.00) -15C bin 1x1
Astrodon Gen 2 Series I Red: 581x20" (gain: 76.00) -15C bin 1x1
Integration: 9.6 hours
Darks: ~50
Flats: ~25
Flat darks: ~50
Avg. Moon age: 24.69 days
Avg. Moon phase: 26.04%
Astrometry.net job: 2950882
RA center: 20h 55' 49"
DEC center: +31° 25' 58"
Pixel scale: 1.621 arcsec/pixel
Orientation: 287.180 degrees
Field radius: 0.846
Locations: Home, Broadlands, VA, United States
Data source: Backyard
I was not very happy with my attempt at the western veil last year so decided to see if I could do better on the eastern veil this time around.
One of my major goals was to see if I could prevent the background from getting that "fuzzy sweater" look that so plagues my images with dense star fields. This time my approach was to do as little to the data as I could and to rely on some useful scripts as well.
I did the preprocessing in AstroPixelProcessor and it did a nice job but it was slow...integration took around 29 hours and this is on a fairly fast system. Adding up all the steps was likely more than 36 hours. Thankfully, most of it was unattended. Still, it was a lot slower than in PixInsight. The result was nice though and the "remove light pollution" tool did a great job.
Once APP was done I moved over to PixInsight:
1. Channel Combination
2. Dynamic Crop
3. Photometric Color Calibration
4. TGV Denoise
5. Masked Stretch
6. Star Reduction Script
7. AdvSharpening Script
8. Curves for contrast
That seemed achieve the desired goal on the background without introducing too many artifacts. I'm not entirely happy with the ringing introduced around the largest stars. I couldn't find a way to prevent it and still do any sharpening with that script. I ended up trying to tone down the ringing in photoshop but I'd have preferred to prevent it to begin with.
Tried to tone down some of the ringing about the brightest stars in photoshop.
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