StDr 140 Lori's Nebula
APOD GrAG Image Of The Day 19 November 2021
Astronomia.com Astronomical Picture Of The Day 20 November 2021
Awarded Amateur Astronomy Picture Of The Day 1 December 2021
Published in Astronomy Now Magazine 15 December 2021
Published in Universo Magico 16 December 2021 www.universomagico.net/?fbclid=IwAR26I3eKR0YBjc_yBCG9UiEwYuz7uuBjV65OqQaJjdOGSmFwOV4n-9-S2mM
Shortlisted for Astronomy Picture Of The Year 1 January 2022
NEW DISCOVERY: StDr 140 - Lori's Nebula in Gemini
A new discovery on October 29th, 2021 of a previously unknown candidate planetary nebula in the constellation Gemini. The object was discovered by my good friends the German-French team of Marcel Drechsler and Xavier Strottner in October 2021 using digital sky surveys. This is their 140th joint discovery. Currently, only very few planetary nebulae are known in the Gemini constellation, and now an impressive new nebula has been added. Because the PN candidate is rich in ionised oxygen (OIII), the object appears in a ghostly turquoise blue. It is at an estimated 4,250 light years from Earth.
My thanks to Marcel Drechsler for so expertly processing this image.
TARGET
Nomenclature: StDr 140, Lori's Nebula, PNG 203.8+18.5
Right Ascension: 07:43:20.39
Declination:  +16:07:53.10
Size: 6.6 arc mins
Discovery: Marcel Drechsler and Xavier Drechsler in October 2021
EQUIPMENT USED
Twin APM TMB LZOS 152 refractors
10Micron GM2000 HPS mount
Twin QSI6120 CCD cameras
Astrodon filters
IMAGE CAPTURE
Blue: 25x300"
Green: 25x300"
Lum: 20x300"
Red: 24x300"
Ha: 116x900" bin 1x1, 34x900" bin 2x2
OIII: 125x900 bn 1x1
Total Integration: 76 hours 35 minutes
Pixel scale: 0.530 arcsec/pixel
Field radius: 0.373 degrees
Capture dates: 4-15 November 2021
Capture location:  Fregenal de la Sierra, Spain

IMAGE PROCESSING:
Data capture and pre-processing (CCDStack2) by Peter Goodhew
Post-processing (Pixinsight) by Marcel Drechsler
Ha image
OIII image