Yesterday I imaged The Great Orion Nebula, except I did it a little differently this time. Not only do I live in a Bortle 9 area with neighbors that must have sky high light bills, but the moon was also nearly full and right next to Orion. Yeah, a really bad time and place to image deep sky. However, I used a Lumicon Hydrogen Alpha (Ha) filter that pretty much filters out the moon and most, if not all, of my idiot neighbors' lights. I also used my technique of using different exposure lengths and/or ISO values, then stacking them together. In this image I use ISO 800 for all exposures, and times of 17 seconds and 27 seconds for both the light and dark frames. I processed each time set separately and compared the results to the combined image. I could clearly see a subtle increase in image detail. In this image I noticed that the Trapezium stars can be made out, even though the gas cloud is large and detailed. In the typical M42 images on line the nebula is so blown out that it looks to me like a huge explosion, very colorful, but..... ADDED 1/17/2022: Just for fun I compared this image to the one I posted on January 5th. I compared both the color image and a copy I desaturated (B&W). This Ha image shows much more detail, especially in the gas cloud. Anyway, here it is: This is my image data, for anyone interested: Subject: M42 & 43 Orion Nebula Date: 01/15/2022 Time: 21:30hr EST Location: Miami, Florida 25.61N 80.42W Conditions: 9-10/10 Instrument: TV-85 with ATR8 Flattener/Reducer Camera: Canon T3i Filter: Lumicon Hydrogen Alpha (Ha) Software: Deep Sky Stacker, GIMP, Photo Studio Notes: - Temperature was a chilly low 60s to mid 50s. - Moon was a bright two days before full, next to Orion. - Images were taken at ISO 800 - Images taken as follows: 17 second lights = 41 17 second darks = 20 27 second lights = 40 27 second darks = 19 20 bias frames at 1/4000 second - All images taken in RAW mode - Output image in TIFF, converted to JPEG for posting.