Hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  19 omi Sco  ·  20 sig Sco  ·  21 alf Sco  ·  22 i Sco  ·  5 rho Oph  ·  Alniyat  ·  Antares  ·  B229  ·  B42  ·  IC 4603  ·  IC 4604  ·  IC 4605  ·  M 4  ·  NGC 6121  ·  NGC 6144  ·  Scorpius  ·  Sh2-9  ·  The star 22Sco  ·  The star Al Niyat (σSco)  ·  The star Antares (αSco)  ·  The star οSco  ·  The star ρOph  ·  rho Oph nebula
Getting plate-solving status, please wait...
The Rho Ophiuchi Cloud Complex - 9 Panel Mosaic, 



    
        

            Matt Harbison
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The Rho Ophiuchi Cloud Complex - 9 Panel Mosaic

Getting plate-solving status, please wait...
The Rho Ophiuchi Cloud Complex - 9 Panel Mosaic, 



    
        

            Matt Harbison
Powered byPixInsight

The Rho Ophiuchi Cloud Complex - 9 Panel Mosaic

Imaging Telescopes Or Lenses
Scope #1 (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
Filters
B · G · R · L · Astrodon Tru-Balance LRGB E-Series Gen 2
Accessories
QHY Med OAG QHYOAG-M · Moonlite Crayford Focuser with motor · William Optics Reducer WO 0.80 #1 · William Optics Reducer 0.80 #2 · WILLIAM OPTICS FLAT 4
Software
PixInsight · Adobe Photoshop photoshop PS · Sequence Generator Pro
Guiding Telescopes Or Lenses
Willam Optics 50mm Guidescope
Guiding Cameras
QHYCCD QHY5L-II M

Acquisition details

Dates:
June 10, 2018 ·  June 11, 2018 ·  June 12, 2018 ·  June 13, 2018
Frames:
Astrodon Tru-Balance LRGB E-Series Gen 2: 36x180" (1h 48') -15°C bin 1x1
Astrodon Tru-Balance LRGB E-Series Gen 2: 12x180" (36') -180°C bin 1x1
Integration:
2h 24'
Darks:
15
Flats:
15
Bias:
15
Avg. Moon age:
27.47 days
Avg. Moon phase:
6.29%
Bortle Dark-Sky Scale:
1.00

RA center: 16h27m28s.0

DEC center: -25°0333

Pixel scale: 10.522 arcsec/pixel

Orientation: -78.600 degrees

Field radius: 3.407 degrees

More info:Open 

Resolution: 1824x1453

Locations: Marathon Motel, Marathon Motel, TX, United States

Data source: Traveller

Description

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.

Comments

Revisions

    The Rho Ophiuchi Cloud Complex - 9 Panel Mosaic, 



    
        

            Matt Harbison
    Original
  • Final
    The Rho Ophiuchi Cloud Complex - 9 Panel Mosaic, 



    
        

            Matt Harbison
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B

Description: Color Version

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The Rho Ophiuchi Cloud Complex - 9 Panel Mosaic, 



    
        

            Matt Harbison