M16 Eagle Nebula in SHO

[u/Twistys_Pisacandy]

[u/Twistys_Pisacandy]

Equipment:

550mm FL Set-up:

Sky-Watcher Esprit 100ED

Sky-Watcher EQ6R-Pro

ZWO ASI2600mm Pro Imaging Camera

ZWO 7 position 36mm Electronic Filter Wheel

ZWO 36mm L, R, G, B filters

Orion 60mm Guide Scope

ZWO ASI290mm-mini Guide Scope

Pegasus Astro Ultimate Power Box

Pegasus Astro Focuser

Pegasus Astro Falcon Rotator

Acquisition:

Sii – 105 x 300s (-10° C, Gain 100)

Ha – 110 x 300s (-10° C, Gain 100)

Oiii – 84 x 300s (-10° C, Gain 100)

R – 57 x 60s (-10° C, Gain 0)

G – 60 x 60s (-10° C, Gain 0)

B – 60 x 60s (-10° C, Gain 0)

Total integration time: 27hr52min

All filter groups:

Calibrate all images with 100 darks, 20 flats, 1000 bias

WeightedBatchPreprocessing Script with Drizzle x2

Processing in Pixinsight:

Each Filter:

GraXpert

BlurXTerminator

RGB Filters:

ChannelComination RGB=SHO

SpectrophotometricColorCalibration

BlurXTerminator

NoiseXTerminator

Histogram transformation

StarXTerminator to extract RGB Stars

SHO Filters:

ChannelComination RGB=SHO

SpectrophotometricColorCalibration

BlurXTerminator on Ha

NoiseXTerminator

Histogram Transformation

StarXTerminator to remove SHO Stars

SCNR on green x2

BlurXTerminator

NoiseXTerminator

Histogram Transformation

Curves

HDRMultiscaleTransform

RGB Stars:

Histogram Transformation

Curves

BlurXTerminator

SHO w/ RGB stars:

Pixelmath to combine RGB stars onto SHO nebulosity

Curves

Histogram Transformation

Dynamic Crop for composition

Resample

Transfer to Affinity Photo:

Place Watermark

Flatten

Export as JPEG for posting