M 3
Messier 3 is a globular cluster of approximately 500,000 stars in the northern constellation of Canes Venatici. It is around 34,000 light years from Earth.
TARGET
Nomenclature: M3, Messier 3, NGC 5272
Right Ascension: 13:42:12
Declination: +28:22:38.2
Size: 18 arc min
Discovery: Charles Messier around 1784
EQUIPMENT USED
APM TMB LZOS 152 refractor
10Micron GM2000 HPS mount
QSI6120 CCD camera
Astrodon filters
IMAGE CAPTURE
Red: 15x300 bin 1x1
Green: 15x300 bin 1x1
Blue: 15x300 bin 1x1
Luminance: 60x300 bin 1x1
Total integration: 8.8 hours
Pixel scale: 0.534 arcsec/pixel
Field radius: 0.362 degrees
Capture dates: 7-8 March 2020
Capture location: Fregenal de la Sierra, Spain
Red: 15x300 bin 1x1
Green: 15x300 bin 1x1
Blue: 15x300 bin 1x1
Luminance: 60x300 bin 1x1
Total integration: 8.8 hours
Pixel scale: 0.534 arcsec/pixel
Field radius: 0.362 degrees
Capture dates: 7-8 March 2020
Capture location: Fregenal de la Sierra, Spain
IMAGE PROCESSING
Pre-processing: CCDStack2
Post-processing: Photoshop CS2
Pre-processing: CCDStack2
Post-processing: Photoshop CS2