10/06/2023
M78 | NGC 2068 | LHaRGB
“Messier 78 or M 78, also known as NGC 2068, is a reflection nebula in the constellation Orion. It was discovered by Pierre Méchain in 1780 and included by Charles Messier in his catalog of comet-like objects that same year.
M78 is the brightest diffuse reflection nebula of a group of nebulae that includes NGC 2064, NGC 2067 and NGC 2071. This group belongs to the Orion B molecular cloud complex and is about 1,350 light-years distant from Earth. M78 is easily found in small telescopes as a hazy patch and involves two stars of 10th and 11th magnitude. These two B-type stars, HD 38563 A and HD 38563 B, are responsible for making the cloud of dust in M78 visible by reflecting their light.
The M78 cloud contains a cluster of stars that is visible in the infrared. Due to gravity, the molecular gas in the nebula has fragmented into a heirarchy of clumps, the denser cores of which about to form stars with masses of up to 5 M☉. About 45 variable stars of the T Tauri type, young stars still in the process of formation as well as some 17 Herbig–Haro objects are known in M78.”
[From the Wiki] Information about the image:
Instrument: Planewave CDK 12.5 | Focal Ratio: F8
Camera: STXL-11000 + AOX | Mount: AP900GTO
Camera Sensitivity: Lum: BIN 1x1, Ha: BIN 1x1, RGB: BIN 2x2
Exposure Details: Total: 38.4 hours | Lum: 97 x 900 sec [24.25hr], Ha: 20x 1200 sec [6.67hr],RGB 450sec x 20 each [7.5hrs]
Viewing Location: Central Victoria, Australia.
Observatory: ScopeDome 3m
Date: January 2018 to February 2018, and November 2018 to January 2019
Software Enhancements: CCDStack2, CCDBand-Aid, PS, Pixinsight
Comment: Good seeing
Author: Steven Mohr
