The big galaxy is NGC 891. But if you look closely, you can find many smaller galaxies in this photo. Click for the large version, and zoom in on almost any square in this image, and you'll find more galaxies. I counted 205.
Don't tell me we are alone...although we may be too far away from anyone to ever find out.
Some new processing techniques, thanks to Sasha at View Into Space:
https://youtu.be/uw_88wD2NWMPreprocessing- Weighted Batch Preprocessing, no bias or darks, with 2x Drizzle
- Dynamic Crop
- Dynamic Background Extraction
L- EZ Decon, simply to generate a PSF file
- StarXTerminator to move stars to a new image
- PixInsight to create an all-black image
- EZ Decon, on starless, unstretched image, using the all-black image as a star mask
- NoiseXTerminator
- Histogram Transformation to stretch
- Unsharp Mask
- Histogram Transformation separately on the star image to stretch (a bit less stretch compared with the starless image)
- PixelMath to screen the stars onto the starless image
RGB- ChannelCombination to blend R, G, and B into a color image
- Spectrophotometric Color Calibration
- Arcsinh Stretch (makes the stars really colorful! but don't overdo it)
- Generalized Hyperbolic Stretch
- Convolution a little, to blur the image and noise
- LRGB Combination to apply L, with saturation = 5.6 (desaturate a little)
- Curves Transformation a touch
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