NGC 1931

About image

NGC 1931 is a nebula located in Auriga constellation, with diameter 3’ and apparent magnitude 10.1.
It is sometimes referred to like an Orion Nebula in miniature as it shares with it some features. 

Indeed, it is a mix between and emission nebula and a reflection nebula and contains inside also an open cluster, a small version of M42 Trapezium.

Technical data
Optic           GSO RC12 Truss - Aperture 304mm, focal lenght 2432mm, f/8
Mount         10Micron GM2000 HPSII
Camera          Moravian G3-16200 with external filter wheel 7 positions
Filters       Astrodon Gen2 E-Serie Tru-Balance 50mm unmounted LRGB, Ha 5nm
Guiding system     OAG Moravian M68 with guide camera Moravian G1-0301
Exposure details   L 27x600" + 10x60", all bin2 -25C
            R 12x600" bin2 -25C
                          G 12x600" bin2 -25C
            B 12x600" bin2 -25C

           Ha 21x600" bin2 -25C              
Total integration   14h10'
Acquisition       Voyager, PHD2
Processing       Pixinsight 1.8, Photoshop CS5, StarXTerminator, Topaz DenoiseAI, DxO Photolab 3
SQM-L        21.2    
Location        Promiod (Aosta Valley, Italy), own remote observatory
Date            17/18/24 October 2020, 16 October/5 November 2021

© Roberto Marinoni 2019 - All rights reserved