NGC 7635 The Bubble Nebula
Published in Astronomy Now Magazine September 2019
Published in Hampshire Sky Magazine September 2019
Published in Astronomy Now Magazine September 2019
Published in Hampshire Sky Magazine September 2019
NGC 7635 is a popular emission nebula in the constellation Cassiopeia. The "bubble" is caused by a stellar wind from a massive hot young central star, SAO 20575.
TARGET
Nomenclature: NGC 7635, Bubble Nebula, Sharpless 162, Caldwell 11, Sh2-162
Right Ascension: 23:20:48.3
Declination: +61:12:06
Size: 15 arc min
Discovery: William Herschel in 1787
EQUIPMENT USED
Twin APM TMB LZOS 152 refractors
10Micron GM2000 HPS mount
Twin QSI6120 CCD cameras
Astrodon filters
IMAGE CAPTURE
5nm Ha: 17x900 bin 1x1, 31x1200 bin 1x1, 73x1800 bin 1x1
3nm OIII: 9x900 bin 1x1, 17x1200 bin 1x1, 24x1800 bin 1x1
Luminance: 26x600 bin 1x1
Red: 28x300 bin 1x1
Green: 28x300 bin 1x1
Blue: 30x300 bin 1x1
Total integration: 82.5 hours
Pixel scale: 0.533 arcsec/pixel
Field radius: 0.349 degrees
Capture dates: 12 June - 12 July 2019
Capture location: Fregenal de la Sierra, Spain
5nm Ha: 17x900 bin 1x1, 31x1200 bin 1x1, 73x1800 bin 1x1
3nm OIII: 9x900 bin 1x1, 17x1200 bin 1x1, 24x1800 bin 1x1
Luminance: 26x600 bin 1x1
Red: 28x300 bin 1x1
Green: 28x300 bin 1x1
Blue: 30x300 bin 1x1
Total integration: 82.5 hours
Pixel scale: 0.533 arcsec/pixel
Field radius: 0.349 degrees
Capture dates: 12 June - 12 July 2019
Capture location: Fregenal de la Sierra, Spain
IMAGE PROCESSING
Pre-processing: CCDStack2
Post-processing: Photoshop CS2
Pre-processing: CCDStack2
Post-processing: Photoshop CS2