Abell 39
Astrobin Image Of The Day 13 May 2019
Published in Astronomy Now Magazine July 2019
Astrobin Image Of The Day 13 May 2019
Published in Astronomy Now Magazine July 2019
A low surface brightness planetary nebula in the constellation Hercules. It is rare in that it is perfectly spherical. It is estimated to be about 6,800 light years from Earth, and 4,600 light years above the galactic plane.
TARGET
Nomenclature: Abell 39
Right Ascension: 16:27:33.71
Declination: +27:54:33.5
Size: 2.5 arc min
Discovery: George Abell around 1955
EQUIPMENT USED
Twin APM TMB LZOS 152 refractors
10Micron GM2000 HPS mount
Twin QSI6120 CCD cameras
Astrodon filters
IMAGE CAPTURE
3nm OIII: 23x1800 bin bin 2x2, 9x1800 bin 1x1
Luminance: 20x300 bin 1x1
Red: 13x300 bin 1x1
Green: 40x300 bin 1x1
Blue: 20x300 bin 1x1
Total integration: 23.8 hours
Pixel scale: 0.534 arcsec/pixel
Field radius: 0.228 degrees
Capture dates: 14 March - 4 May 2019
Capture location: Fregenal de la Sierra, Spain
3nm OIII: 23x1800 bin bin 2x2, 9x1800 bin 1x1
Luminance: 20x300 bin 1x1
Red: 13x300 bin 1x1
Green: 40x300 bin 1x1
Blue: 20x300 bin 1x1
Total integration: 23.8 hours
Pixel scale: 0.534 arcsec/pixel
Field radius: 0.228 degrees
Capture dates: 14 March - 4 May 2019
Capture location: Fregenal de la Sierra, Spain
IMAGE PROCESSING
Pre-processing: CCDStack2
Post-processing: Photoshop CS2
Pre-processing: CCDStack2
Post-processing: Photoshop CS2