NGC 40
Awarded Astronomical Picture Of The Day by astronomia.com apod.astronomia.com/2021/01/11/ngc-40/?fbclid=IwAR2hYU0pm_ZcFdjYbR3p0jOQaRoDBipq7hKq5EYpMGuw_afQOSxvfb4TlH8
Published in Astronomy Now Magazine March and September 2021
Another tiny (56 arc sec), bright planetary nebula in Cepheus that I can capture during full moon. The Ha signal is much stronger than OIII, so the OIII emission appears as pink rather than blue-green.
TARGET
Nomenclature: NGC 40, Caldwell 2, Bow-tie nebula
Right Ascension: 00:13:01.015
Declination:  +72:31:19.085
Size: 56 arc sec
Discovery: William Herschel on November 25, 1788
EQUIPMENT USED
Twin APM TMB LZOS 152 refractors
10Micron GM2000 HPS mount
Twin QSI6120 CCD cameras
Astrodon filters
IMAGE CAPTURE
Blue: 17x300"
Green: 18x300"
Lum: 19x300"
Red: 17x300"
Ha: 55x300" bin 1x1
OIII 29x300" bin 1x1
Total Integration: 12.9 hours
Pixel scale: 0.267 arcsec/pixel
Field radius: 0.077 degrees
Capture dates: 28 December 2020 - 1 January 2021
Capture location:  Fregenal de la Sierra, Spain

IMAGE PROCESSING
Pre-processing: CCDStack2
Post-processing: Photoshop CS2
Ha image
OIII image