Imaging telescopes or lenses: William Optics FLT 132 Triplet APO WOFLT132 · William Optics FLT 132 Triplet APO Scope #2
Imaging cameras: QHY 16200A 16200 #2 · QHY 16200A
Mounts: Astro-Physics 1100 GTO
Guiding telescopes or lenses: Willam Optics 50mm Guidescope
Guiding cameras: QHY-5-L-II-M QHY5-II Mono
Focal reducers: William Optics Reducer 0.80 #2 · William Optics Reducer WO 0.80 #1 · WILLIAM OPTICS FLAT 4
Software: PixInsight · Adobe Photoshop photoshop PS · Sequence Generator Pro
Filters: B · G · R · L
Accessory: QHY Med OAG QHYOAG-M · Moonlite Crayford Focuser with motor
Dates:June 10, 2018 , June 11, 2018 , June 12, 2018 , June 13, 2018
Frames:
Astrodon Tru-Balance LRGB E-Series Gen 2: 36x180" -15C bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2: 12x180" -180C bin 1x1
Integration: 2.4 hours
Darks: ~15
Flats: ~15
Bias: ~15
Avg. Moon age: 27.47 days
Avg. Moon phase: 6.29%
Bortle Dark-Sky Scale: 1.00
Astrometry.net job: 2117952
RA center: 16h 27' 28"
DEC center: -25° 3' 33"
Pixel scale: 10.522 arcsec/pixel
Orientation: -78.600 degrees
Field radius: 3.407 degrees
Resolution: 1824x1453
Locations: Marathon Motel, Marathon Motel, TX, United States
Data source: Traveller
The Rho Ohphiuchi Cloud Complex- A 9 Panel mosaic shot in Marathon Texas at the Marathon Motel & RV Park during the new moon in June over the course of 4 nights. Some of the most beautiful colors in our galaxy are found in Scorpius around the Rho Ophiuchi Cloud Complex and I was happy to finally catch their photons on my telescope!
Technical Details:
12 x 180s L
12 x 180s R
12 x 180s G
12 x 180s B
Flats taken after each session. Bias and Darks from my library.
Equipment Dtails:
2 x William Optics 132 FLT 5.5 Telescope w/ Flat 7 @ 5.6
Lum & Red shot on scope 1, Green and Blue shot on scope2
Astro Physics 1100 GTO
QHY 16200 x 2
QHY 5LII Guide Camera on WO 50mm Scope
Calibrated, Combined, and Exported in Pixinsight. Levels and Color adjustment in Photoshop. Plate Solve from Pixinsight.
Panel Process:
-Dynamic crop per panel
-Batch PreProcessing used to combine flats, darks, and bias frames. Cosmetic Correction used on each panel.
-Dynamic Background adjustment per panel
-Photometric Color Calibration per panel
-Histogram Transformation applied
-Noise Reduction via SCNR Green Channel
-Export to master TIF for full color panel
Mosaic Process:
-Each Channel solved via Image Solver in Pixinsight- Tedious but effective and ensures a valid plate solve.
-Saved as .Tiff & .Xisf per channel
-Mosaic By Coordinates Script ran on each channel master to create a master per channel.
-EXTREMELY GOOD NOTES taken per panel for image center and Photometric Color Calibration (If you don't, you'll redo the process over and over- Sky Safari is your friend.
-Combination via Gradient Merge Mosaic per channel
-Optional combination of LRGB targets yield less color & slightly better combination to my eye. YMMV.
Description: Color Version
| Barnard Astronomical Society of Chattanooga |
| QHY Users Group |
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