The Crescent Nebula

Constellation Cygnus

Right ascension 20h 12m 7s

Declination +38° 21′ 30″

 

Image Details

Lights Ha-Filter - 34x180s @ -10°C Gain 100 HCG

Lights Oiii-Filter - 62x180s @ -10°C Gain 100 HCG

Lights Sii-Filter - 24x180s @ -10°C Gain 100 HCG

 

Flats - 10x

Bias - 100x0.2s

 

Equipment

Mount - Skywatcher EQ6-R

Telescope - TS-Optics CF-APO 90 mm

Camera - Altair Astro 26m

Motorfocus - Pegasus FocusCube v2

Filter Wheel - Starlight Xpress 7x 36mm

Filters - Chroma Set 36mm: L,R,G,B,Ha (5nm),SII (3nm),OIII (3nm)

GuideCam - Altair 290c

GuideScope - TSOptics 50mm ED

Flatbox - DeepSkyDad Flap Panel

 

 

Software

N.I.N.A. - Nighttime Imaging 'N' Astronomy

PHD2

Pixinsight

 

 

Preprocessing for all Filters and Panels

Flat Calibration

Flat ImageIntegration

Light Calibration

SubframeSelector to select best set of images

StarAlignment

Light ImageIntegration

Drizzle Integration

 

 

Processing

Linear

Dynamic Crop

Dynamic Background Extraction

EZ Deconvolution on Ha & Oiii

 

Non-Linear

Pixelmath to combine the channels

Lots of Curve Adjustments

Done