DeHt 5
DeHt 5 is an emission nebula in the constellation Cepheus. It is estimated to be 1,300-1,600 light years from Earth. Originally catalogued as a planetary nebula, studies have concluded that it is simply a dense part of the interstellar medium (ISM) that is ionised by a hot white dwarf star. The faint red filaments at the top right hand corner of the image are the supernova remnant called SNR 110.3+11.3.

TARGET
Nomenclature: DeHt 5, Dengel-Hartl 5, PK 111+11.1
Right Ascension: 22:19:33.73
Declination: +70:56 03.1
Size:11 arc min
Discovery: J Dengel, H Hartl in 1979
EQUIPMENT USED
Twin APM TMB LZOS 152 refractors
10Micron GM2000 HPS mount
Twin QSI6120 CCD cameras
Astrodon filters
IMAGE CAPTURE
5nm Ha: 25x1800 bin 2x2
3nm OIII: 26x1800 bin 2x2
Luminance: 20x600 bin 1x1
Red: 20x300 bin 1x1
Green: 19x300 bin 1x1
Blue: 19x300 bin 1x1
Total integration: 33.7 hours
Pixel scale: 0.533 arcsec/pixel
Field radius: 0.353 degrees
Capture dates: 2-10 October 2019
Capture location: Fregenal de la Sierra, Spain
5nm Ha: 25x1800 bin 2x2
3nm OIII: 26x1800 bin 2x2
Luminance: 20x600 bin 1x1
Red: 20x300 bin 1x1
Green: 19x300 bin 1x1
Blue: 19x300 bin 1x1
Total integration: 33.7 hours
Pixel scale: 0.533 arcsec/pixel
Field radius: 0.353 degrees
Capture dates: 2-10 October 2019
Capture location: Fregenal de la Sierra, Spain
IMAGE PROCESSING
Pre-processing: CCDStack2
Post-processing: Photoshop CS2
Pre-processing: CCDStack2
Post-processing: Photoshop CS2