UPDATE..............
Some bright stars using the Takahashi FSQ85-EDX can create the so-called inverted lighthouse or hourglass effect. I discussed this with Adam Block and he demonstrated a way to fix this. So, I fixed the star Tejat Posterior (Mu Geminorum) using a new clone stamp approach.
This is a continuation of an Ha-only image of this region I recently captured (
here). I was able to gather a few hours of OIII and even some RGB for the stars despite the moonglow.
The most notable structures being the so-called Monkey Head and Jellyfish Nebulae which many have imaged. The
Monkey Head Nebula (Sh2-252) is a HII mission nebula located in the constellation Orion and is associated with the open star cluster NGC 2175. It is thought to be located about 6,400 light-years away from Earth.
Sh2-247 is a round diffuse nebula, which according to one study, contains 37 thousand solar masses of gas and dust at a distance of 2200 pc, and appears to be physically connected through CO filaments with Sh 2-252. Thus, it may not be out on an island as it appears to be in the image. The
Jellyfish Nebula (Sh2-248) is a galactic supernova remnant in the constellation Gemini. Its distance is roughly 5,000 light years from Earth.
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