PN G020.9-11.3
APOD GrAG Picture of the Day 26 July 2019 apod.grag.org/2020/07/26/pn-g020-9-11-3/
A faint circular diffuse evolved planetary nebula in the constellation of Sagittarius. I believe that this is the first colour photograph of this object, and the first amateur photograph taken.
It was discovered on 29 June 1998 by the MASH (Macquarie/AAO/Strasbourg H-Alpha) team using the Anglo-Australian Observatory UK Schmidt Telescope (AAO/UKST) H-alpha survey.Because it is so faint the narrowband data was captured at bin 3x3.
The central star of the planetary nebula (CSPN) is clear visible as the blue star that is dead centre.

Reference: Monthly Notices of the Royal Astronomical Society, 373, 79-94 published November 2006.

TARGET
Nomenclature:  PN G020.9-11.3, PHR 1911-1546
Right Ascension: 19:11:04.39
Declination: -15:46:07
Size: 2.6 arc min
Discovery: MASH (Macquarie/AAO/Strasbourg H-Alpha) team on 29 June 1998
EQUIPMENT USED
Twin APM TMB LZOS 152 refractors
10Micron GM2000 HPS mount
Twin QSI6120 CCD cameras
Astrodon filters
IMAGE CAPTURE
5nm H-Alpha: 20 x1800 bin 3x3
3nm OIII: 17 x1800 bin 3x3
Red: 11x300 bin 1x1
Green: 11x300 bin 1x1
Blue: 10x300 bin 1x1
Total integration: 22.9 hours
Pixel scale: 0.533 arcsec/pixel
Field radius: 0.228 degrees
Capture dates: 22 June - 1 July 2020
Capture location:  Fregenal de la Sierra, Spain
IMAGE PROCESSING
Pre-processing: CCDStack2
Post-processing: Photoshop CS2