On the 14th of May, 2021, right after dusk, I enjoyed the best seeing ever from my location. Narrow band short subs came in with a FWHM between 0.9" and 1.1" (the lowest was 0.83"). And this hold for more than two hours. As my target for the night was still down, I decided to do some experimentation imaging Eta Carinae and the Homunculus Nebula, using hundreds of short exposures. Ended up collecting 130 x 5 sec on O3, 150 x 2 sec on SII, and 110 x 5 sec, plus 250 x 2 sec, and 150 x 0.5 sec on H-alpha. The presentation is in the form of a GIF animation, comparing the famous 2018 image from the HST. As usual, I used a 6.6-inch AP apo refractor and a QHY600. Pixel resolution is 0.154", resulting from a native resolution of 0.617"/pixel, processed with drizzle 2x, and later upscaled by 2x.
The color composition follows a HSO lineup (didn't like the standard Hubble palette in this case). Finally, note that the blueish streaks of nebulosity in the HST image comes from an UV color channel not present in my image.
If one looks carefully, a hint of the expansion in the last three years is barely noticeable. If compared to the iconic 1995 HST image, then the expansión is evident.
