NGC 7139

NGC7139 is a bright planetary nebula in Cepheus - bright enough to capture in moonlight.
It is 4,300 light years from Earth.
This is a revisit of an old target where I wanted to go deeper and dig out more detail.
TARGET
Nomenclature: NGC 7139
Right Ascension: 21:46:09
Declination:  +63:47:30
Size: 1.4 arc min
Discovery: William Herschel on November 5, 1787
EQUIPMENT USED
Twin APM TMB LZOS 152 refractors
10Micron GM2000 HPS mount
Twin QSI6120 CCD cameras
Astrodon filters
IMAGE CAPTURE
5nm H-Alpha: 351x300, 48x900 and 7x1800 bin 1x1
3nm OIII: 206x300, 48x900 bin 1x1
Red: 14x300 bin 1x1
Green: 16x300 bin 1x1
Blue: 17x300 bin 1x1
Total integration: 77 hours 50 minutes
Pixel scale: 0.265 arcsec/pixel
Field radius: 0.188 degrees
Capture dates: 9-15 August 2022
Capture location:  Fregenal de la Sierra, Spain
IMAGE PROCESSING
Pre-processing: CCDStack2
Post-processing: Photoshop CS2