Aeroplanes - Mooney
View allAll Photos Tagged M20
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
Newton 203/800
ZWO ASI 183MMPRO
LRGB-HA (astrodon)
180 - 60 - 60 - 60 - 180 (minutes)
9 hours (total)
Pixinsight + BlurXterminator
--The Shot--
I've been trying my best to get my image archives organized and as I was passing through last year, I realized it has been a year to the day that this amazing sunset happened at Rodeo Beach in the Marin Headlands near San Francisco. I've had this one on my edits as a monochrome, but decided to go ahead and process it in color. Looking forward to the winter storms and more dramatic light!
--The Gear--
Nikon D300
Nikkor 12-24mm @ 12mm
Nikon MC-36 cable release
0.6sec, f22, ISO 100
Singh-Ray 3-stop Daryl Denson reverse graduated neutral density filter
Markins M20 ballhead
Really Right Stuff lever clamp and L-plate
Gitzo GT3351 carbon fiber tripod
--Software & Processing--
In ACR, adjusted brightness, exposure and white balance for sky only and then again for the foreground only. Blended the two 16-bit tiffs in PS CS5 by hand.
In CS5, layers included:
-Basic Mid-Tones luminosity mask with Curves adjustment
-Vibrance mask for saturation increase
-Saturation mask for saturation decrease
-Burn/Dodge layer with 50% gray and layer mode Soft Light using two different luminosity mask selections to even out the light a little more.
-Noise reduction selectively masked with Noise Ninja
-Sharpening selectivel masked with Nik Sharpener Pro
-Crop to square
-Custom action for web sizing, sharpening, conversion to 8-bit, sRGB, and embedding personal info into exif
-Total time on image about 30-40 minutes
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
for the serie "the sky of South Corse"
this is my last taken on M20, about 3 hours of total integration time with a RC8 and ZWO ASI1600 mon in Ha-LRGB
Full specs on my astorbin:
Datos técnicos:
Telescopio: Takahashi FSQ106EDX (f/5)
Montura: Takahashi EM-400 Temma2
Cámara: Atik 16200 (KAF-16200)
Guiado: Lunático EZG-60 + SXLodestar
Filtros: Astrodon Gen2 LRGB I-Series 50,8mm
Enfocador: RoboFocus Rev3.1
Fecha: Julio del 2021
Lugar: Guadalajara, España
Programas de captura: MaxIm DL + AstroMatic
Procesado: PixInsight Core + Photoshop CC 2019
Exposición: L: 15x600s bin1, RGB: 12x300s bin2.
Total: 5h 30m
OTA: Newtonian Celestron 130 mm/f5 modified
Mount: Skywatcher Heq 5
Imaging Camera: Canon 700D astro modified
Telescope Guide: Gso 50mm
Camera Guide: QHY5L II Mono
Baader Mk III Coma Corrector
Polemaster Eletronic Polar Scope
Total Exposure: 06:30 hours (subs 300 sec)
Deep Sky Stacker: Calibration and stacking
Adobe Photoshop Cs2 : Data Processing
Guide: PHD Guiding 2
Darks, Dark Flats, Flats and Bias apply
Serra Negra ( Bortle 4) /São Paulo/Brasil . 06/2019 + 06/2023
With the processing knowledge acquired lately, I tried to redo the M20 from the session made in August. but at full size 1: 1 cropping only the center of the original photo.
The photo processed in August can be found here
ASI 294 MC pro + L-pro
1h36m on Newton 200mm F4
M8-M20 region
Credit: Giuseppe Donatiello
Messier 8 - The Lagoon Nebula (below)
RA: 271,039° Dec: -24,379°
M8 - The Lagoon Nebula (NGC 6523) is a giant H II region in the constellation Sagittarius at 4,000-6,000 light years. The nebula contains several Bok globules (dark, collapsing clouds of protostellar material), the most prominent of which have been catalogued as B88, B89 and B296.
Messier 20 - "The Trifid Nebula" (above)
J2000 RA: 18h 02m 23s Dec: −23° 01′ 48″
NGC 6514, also known as The Trifid Nebula, is an HII region in Sagittarius discovered by Charles Messier on June 5, 1764.
The object is a combination of an opened cluster of stars, emission nebula, reflection nebula and a dark nebula that divide into three lobes this object.