NGC 1491

About image
NGC 1491 is an emission nebula in the Perseus constellation, with dimensions of 9'x6 '; It 's a relatively bright object and near the nebula extends a whole area of much weaker nebular emission.
The image is a Ha / OIII composition obtained with the Cannistra method (R = Ha, B = OIII, G = Ha + OIII).

Technical data
Optic            Tecnosky Apo Refractor 115 - 800mm f/6.9
Mount          Losmandy G11 with Ovision worm and FS2
Camera           Atik 4000 with Starlight Xpress filter wheel 5 positions
Filters        Baader Ha 7nm and OIII 8.5nm, 50.8 unmounted
Guiding system      TSOAG 9mm with Lodestar
Exposure details    Ha 17x1200" bin1 -25C
                                      OIII 18x1200" bin1 -25C
Total integration    11.7h
Acquisition        Maxim, PHD2
Processing        Maxim, Photoshop CS5
SQM-L         18.6    
Location         Home terrace (Rescaldina, Italy)
Date             26/27 November 2013

© Roberto Marinoni 2019 - All rights reserved