Hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  Andromeda Galaxy  ·  HD3969  ·  M 31  ·  M 32  ·  NGC 221  ·  NGC 224
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M31 - Andromeda Galaxy Core, 



    
        

            Steve Ludwig
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M31 - Andromeda Galaxy Core

Getting plate-solving status, please wait...
M31 - Andromeda Galaxy Core, 



    
        

            Steve Ludwig
Powered byPixInsight

M31 - Andromeda Galaxy Core

Acquisition details

RA center: 00h42m38s.43

DEC center: +41°1530.10

Pixel scale: 1.197 arcsec/pixel

Orientation: 92.829 degrees

Field radius: 0.535 degrees

WCS transformation: thin plate spline

More info:Open 

Resolution: 2684x1766

File size: 2.9 MB

Data source: Backyard

Description

Equipment

- Main scope: Bresser Messier 10" Newton (254/1270)
- Main camera: Nikon D3300 (unmodified)
- Guide scope: Orion AC 50/162 Deluxe Mini
- Guide camera: ZWO ASI 290MC
- Mount: Skywatcher EQ6-R
- Explore Scientific HR coma corrector

Acquisition

- 45 lights x 300 s = 3 h 45 min
- no dark, flat, bias frames
- no filters
- ISO 200
- Bortle 4

Processing (latest revision)

- stacked in DSS
- bilinear debayer method & median kappa sigma clipping

- unmodified TIF opened in PixInsight
- STF stretch
- dynamic crop
- dynamic background extraction
- background neutralization
- color calibration
- histogram transformation
- SCNR green to remove greenish noise
- Starnet 2 to separate stars & background
- background: masked curves transformation to increase saturation of brighter areas
- background: masked unsharp mask to increase sharpness of brighter areas
- background: masked ACDNR to reduce noise in dark areas
- stars: curves transformation to increase saturation
- stars: unsharp mask to increase sharpness
- pixel math to recombine stars & background
- resample 50% to improve general noise (not much detail loss as the image was oversampled anyway)
- final histogram / curves transformations
- saved as jpg

Comments

Sky plot

Sky plot

Histogram

M31 - Andromeda Galaxy Core, 



    
        

            Steve Ludwig