paul.t.macklin
Heart & Soul Nebulas: 15-panel mosaic
I created this mosaic with a ZenithStar 61ii throughout August, September, and October 2021. Each panel integrated a minimum of 7 hours of 6 minute exposures at dual narrowband. The mosaic shown here integrates 107.5 hours of photons.
Take a look for the Heart Nebula, Soul Nebula, Fish Head Nebula, quite a few planetary nebulas, and quite a few more hydrogen-rich formations.
For each panel, I extracted and stacked Ha and [OIII] separately, then processed to remove light pollution.
I then stitched separate mosaics for Ha and [OIII] and combined them with an HOO2 palette.
I found that taking adding 3-6 panels at a time and carefully matching across boundaries was helpful in building a consistent mosaic. I also found that the LNC typically suggested for mosaics (LNC degree 4, 3 iterations) introduced wavy artifacts across the mosaic, but blending with simple MBB (20% overlap) gave a much better result since I had already reduced light pollution from the individual panels.
See more views and acquisition details at astrobin: www.astrobin.com/ar32lb
Heart & Soul Nebulas: 15-panel mosaic
I created this mosaic with a ZenithStar 61ii throughout August, September, and October 2021. Each panel integrated a minimum of 7 hours of 6 minute exposures at dual narrowband. The mosaic shown here integrates 107.5 hours of photons.
Take a look for the Heart Nebula, Soul Nebula, Fish Head Nebula, quite a few planetary nebulas, and quite a few more hydrogen-rich formations.
For each panel, I extracted and stacked Ha and [OIII] separately, then processed to remove light pollution.
I then stitched separate mosaics for Ha and [OIII] and combined them with an HOO2 palette.
I found that taking adding 3-6 panels at a time and carefully matching across boundaries was helpful in building a consistent mosaic. I also found that the LNC typically suggested for mosaics (LNC degree 4, 3 iterations) introduced wavy artifacts across the mosaic, but blending with simple MBB (20% overlap) gave a much better result since I had already reduced light pollution from the individual panels.
See more views and acquisition details at astrobin: www.astrobin.com/ar32lb