NGC 7009 The Saturn Nebula
British Astronomical Association Picture Of The Week 18 August 2019
British Astronomical Association Picture Of The Week 18 August 2019
NGC 7009 is a planetary nebula in the constellation Aquarius. It is estimated to be between 3,900 and 5,200 light years from Earth.
TARGET
Nomenclature: NGC 7009, Saturn Nebula, Caldwell 55
Right Ascension: 21:04:10.82
Declination: -11:21:48.2
Size: 28 arc sec (central shell), 4.5 arc min (outer halo)
Discovery: William Herschel on September 7, 1782 The outer halo was discovered by Marco Moreno-Corral, Eduardo de La Fuente, & Fidel Gutiérrez in 1998
EQUIPMENT USED
Twin APM TMB LZOS 152 refractors
10Micron GM2000 HPS mount
Twin QSI6120 CCD cameras
Astrodon filters
IMAGE CAPTURE
5nm Ha: 183x300 bin 1x1
3nm OIII: 34x1800 bin 2x2, 74x600 bin 1x1
Luminance: 22x300 bin 1x1, 193x30 bin 1x1
Red: 26x300 bin 1x1, 93x30 bin 1x1
Green: 25x300 bin 1x1, 199x30 bin 1x1
Blue: 24x300 bin 1x1, 110x30 bin 1x1
Total integration: 56.8 hours
Pixel scale: 0.530 arcsec/pixel
Field radius: 0.231 degrees
Capture dates: 6 July - 11 August 2019
Capture location: Fregenal de la Sierra, Spain
5nm Ha: 183x300 bin 1x1
3nm OIII: 34x1800 bin 2x2, 74x600 bin 1x1
Luminance: 22x300 bin 1x1, 193x30 bin 1x1
Red: 26x300 bin 1x1, 93x30 bin 1x1
Green: 25x300 bin 1x1, 199x30 bin 1x1
Blue: 24x300 bin 1x1, 110x30 bin 1x1
Total integration: 56.8 hours
Pixel scale: 0.530 arcsec/pixel
Field radius: 0.231 degrees
Capture dates: 6 July - 11 August 2019
Capture location: Fregenal de la Sierra, Spain
IMAGE PROCESSING
Pre-processing: CCDStack2
Post-processing: Photoshop CS2
Pre-processing: CCDStack2
Post-processing: Photoshop CS2