Aeroplanes - Mooney
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M20 (often referred to as "Trifid nebula") is a collection of three different nebulae in the Sagittarius constellation, around 9000 light years from earth.
Not only is this a collection of three different nebulae; it’s also three completely different types:
- Dark nebula: this part consists of dark dust clouds that absorb/block any light from stars behind it. You can see this as the black lines in the center of the image.
- Emission nebula: this part consists of clouds of hydrogen that get ionized (think of it as getting energized and glowing) due to the presence of nearby stars. You can see it as the red'ish part of the image.
- Reflection nebula: this part consists of clouds of interstellar dust, which reflect the light of nearby stars. You can see this as the blue part of the image.
Setup:
Planewave CDK24
Moravian C3-61000 Pro
Planewave L-600
Image acquisition details:
14x900" HA
12x600" Red
12x600" Green
12x600" Blue
Narrowband shot of M8 and M20; two emission/reflection nebulae in the Sagittarius constellation, around 4100 light years from earth.
Image acquisition details:
39x300" HA
35x300" OIII
34x300" SII
Widefield shot of M8 and M20; two emission/reflection nebulae in the Sagittarius constellation, around 4100 light years from earth.
Image acquisition details:
80x120" Luminance
55x120" Red
55x120" Green
55x120" Blue
Discovered by Charles Messier in 1764, M20 is a star-forming nebula located 9,000 light-years away from Earth in the constellation Sagittarius. Also known as the Trifid Nebula, M20 has an apparent magnitude of 6.3 and can be spotted with a small telescope.
Image Details:
- Imaging Scope: William Optics 61mm Zenithstar II Doublet
- Imaging Camera: ZWO ASI183MC Color with UV/IR Blocking filter
- Guiding Scope: William Optics 66mm Petzval
- Guiding Camera: Orion Starshoot Auutoguider
- Acquisition Software: Sharpcap
- Guiding Software: PHD2
- Capture Software: SharpCap Pro (LiveStack mode with dithering)
- Light Frames: 20*4 mins @ 100 Gain, Temp -20C
- Dark Frames: 12*4 mins
- Stacked in Deep Sky Stacker
- Processed in PixInsight, Adobe Lightroom, and Topaz Denoise AI