Sh2-174
Sh2-174 was initially believed to be a planetary nebula in the constellation Cepheus, although it is now considered to be ionised intersteller medium (ISM). It is 930 light years from Earth.
TARGET
Nomenclature: Sh2-174, Sharpless 174, PK 120+18.1, Valentine's Rose Nebula
Right Ascension: 23:47:08
Declination: +80:49:22
Size: 17 arc min
Discovery: Stewart Sharpless in 1959
EQUIPMENT USED
APM TMB LZOS 152 refractor
10Micron GM2000 HPS mount
QSI6120 CCD camera
Astrodon filters
IMAGE CAPTURE
5nm Ha: 22x1800 bin 1x1
3nm OIII: 22x1200 bin 2x2
Red: 13x300 bin 2x2
Green: 15x300 bin 2x2
Blue: 15x300 bin 2x2
Total integration: 21.9 hours
Pixel scale: 0.534 arcsec/pixel
Field radius: 0.365 degrees
Capture dates: 30 March - 6 April 2018
Capture location: Alcalali, Spain
5nm Ha: 22x1800 bin 1x1
3nm OIII: 22x1200 bin 2x2
Red: 13x300 bin 2x2
Green: 15x300 bin 2x2
Blue: 15x300 bin 2x2
Total integration: 21.9 hours
Pixel scale: 0.534 arcsec/pixel
Field radius: 0.365 degrees
Capture dates: 30 March - 6 April 2018
Capture location: Alcalali, Spain
IMAGE PROCESSING
Pre-processing: CCDStack2
Post-processing: Photoshop CS2
Pre-processing: CCDStack2
Post-processing: Photoshop CS2