Test: Verhalten von size (arcmin) und Pixel scale (arcsec/pixel) bei Änderung von Binning / Runterrechnen von Bildern

Schnelle Notiz:

=> Runterrechnen von Bildern erhöht den pixel scale

=> Binning wirkt wie Runterrechnen: weniger Pixel, daher größerer Bildwinkel je Pixel

=> Bildwinkel bei 2100mm an APS-C beträgt ca. 36.9 x 24.6 arcmin

*** Astrometry.net ***

für  

20230613 - M92 - 1 final.jpg (6008x4003px auf 1920x1280 runtergerechnet)

Calibration

Center (RA, Dec): (259.278, 43.136)

Center (RA, hms): 17h 17m 06.810s

Center (Dec, dms): +43° 08' 10.522"

Size: 36.9 x 24.6 arcmin

Radius: 0.369 deg

Pixel scale: 1.15 arcsec/pixel

Orientation: Up is 168.4 degrees E of N

20230613 - M92 - full.jpg (6008x4003px nicht runtergerechnet => arcsec/pixel viel kleiner als oben)

Calibration

Center (RA, Dec): (259.278, 43.136)

Center (RA, hms): 17h 17m 06.830s

Center (Dec, dms): +43° 08' 10.494"

Size: 36.9 x 24.6 arcmin

Radius: 0.369 deg

Pixel scale: 0.368 arcsec/pixel

Orientation: Up is 168.4 degrees E of N

*** Astrometry.net ***

für  

20230602 - M101 + SN2023ixf - 1 final.jpg (3x3 Binning-Version, runtergerechnet)

aus

D:\Astro\2023\20230602 + M101 + SN2023ixf - Binning

Calibration

Center (RA, Dec): (210.789, 54.379)

Center (RA, hms): 14h 03m 09.331s

Center (Dec, dms): +54° 22' 43.792"

Size: 34.4 x 22.9 arcmin

Radius: 0.344 deg

Pixel scale: 1.07 arcsec/pixel

Orientation: Up is 159.6 degrees E of N

20230531 - M101 + SN2023ixf - 1 final V2b.jpg (No-Binning-Version, runtergerechnet)

aus 

D:\Astro\2023\20230531 + M101 + SN2023ixf

Calibration

Center (RA, Dec): (210.787, 54.356)

Center (RA, hms): 14h 03m 08.890s

Center (Dec, dms): +54° 21' 20.905"

Size: 35.8 x 23.9 arcmin

Radius: 0.359 deg

Pixel scale: 1.12 arcsec/pixel

Orientation: Up is 159.7 degrees E of N