Bubble Nebula and M52

CAPTURE INFO

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Scope Centering:

- RA: 350.7247376561124"

- Dec: 61.50483177183408"

 

Date Captured:

October 24, Home (Bortle 7)

 

GUIDING NOTES:

Average, averaging ~0.8 RMS

 

IMAGE CALIBRATION (PixInsight)

Weighted Batch Preprocessing

- Lights, Darks, Flat Darks, Bias

- Cosmetic Correction

- Stats

- (31) 240 second subs

- Normalize Scale Gradient Script to nomalize background

 

NON LINEAR PROCESSING (PixInsight)

1. Dynamic Background Extraction

2. Background Neutralization

3. Linear Noise Reduction using MultiscaleLinearTransform

4. Another Linear Noise Reduction using MultiscaleLinearTransform

 

LINEAR PROCESSING (PixInsight)

1. Easy Soft Stretch script

2. SCNR on the G channel

3. Created Star Mask and inverted to protect the stars

3. Ran HDRMultiscaleLinearTransform to enhance nebula

4. Ran a slight "S" curve using CurvesTransformation to darken background and enhance nebula

5. LocalHistogramEqualization @ 25 for contrast on nebula

6. LocalHistogramEqualization @ 25 to further contrast nebula

7. MultiscaleLinearTransform to sharpen detail in the nebula

8. Increased saturation of the stars using Curves

9. Made image ready for the web using ICCProfileTransformation

 

EQUIPMENT

Optics: William Optics 61ii doublet refractor @ 368mm FL

William Optics adjustable field flattener

 

Camera: ZWO 533mc Pro (OSC)

 

Filters:

- 2" Optolong L-Enhance using filter drawer

 

Mount:

- iOptron GEM 28

 

Guiding:

- ZWO 120mm mini (red filter)

- William Optics 32mm f/3.75 UniGuide Guidescope

- ZWO ASI Air Pro

- Used previous calibration

- Dither: 5 pixels, every 2 frames

 

Acquisition:

- ZWO ASI Air Pro (Plan Mode)

 

Done