Planetary Nebula

The Eskimo Nebula - NGC 2392

This is the planetary nebula called The Eskimo Nebula or NGC 2392. It is a double-shell planetary nebula located in the constellation Gemini. Radial velocity measurements reveal that this diameter of the cloud is growing at a rate of 68 miles per second (Burnham, 1978).
Tech Specs: Orion 8" f/8 Ritchey-Chretien Astrograph Telescope, Celestron CGEM-DX pier mounted, ZWO ASI290MC and ASI071MC-Pro, ZWO AAPlus, ZWO EAF, 54 x 60 seconds at -10C plus darks and flats, stacked in DSS. Image Date: November 6, 2021. Location: The Dark Side Observatory, Weatherly, PA, USA (Bortle Class 4).

The Shrimp Nebula - Sh2-188

Sh2-188 is a planetary nebula in Cassiopeia. It does not have an official name but is often called the "Shrimp Nebula" or even the "Dolphin Nebula" due to its shape. The expanding gas from the planetary nebula is colliding with ambient gas in the interstellar medium. The nebula is nearly circular in shape but is much brighter to the southeast (lower right) because the central star is moving rapidly in that direction. Faint wisps of gas can also be seen in the opposite direction.
Tech Specs: Sky-Watcher Esprit 120ED Telescope, ZWO AS2600mc-Pro running at 0C, Sky-Watcher EQ6R-Pro mount, Optolong L-eNhance filter (2”), 35 x 300 second exposures, guided using a ZWO 30mm f/4 mini guide scope and ZWO 120 Mini, focus with a ZWO EAF, controlled with a ZWO ASIAir Pro. Processed using PixInsight and DSS. Image Date: August 18, 2022. Location: The Dark Side Observatory, Weatherly, PA, USA (Bortle Class 4).