Celestial hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  41 Ori A)  ·  41 Ori C  ·  41 Ori D  ·  42 Ori)  ·  43 Ori)  ·  44 Ori)  ·  Great Orion Nebula  ·  Lower Sword  ·  M 42  ·  M 43  ·  Mairan's Nebula  ·  NGC 1973  ·  NGC 1975  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1982  ·  Orion Nebula  ·  The star 45 Ori  ·  The star Hatysa (ι Ori  ·  The star Mizan Batil I (c Ori  ·  The star Mizan Batil II (θ2 Ori  ·  The star Trapezium (θ1 Ori A  ·  The star θ1 Ori C  ·  The star θ1 Ori D  ·  the Running Man Nebula
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M42 HOO Orion Great Nebula, patrice_so
M42 HOO Orion Great Nebula
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M42 HOO Orion Great Nebula

Getting plate-solving status, please wait...
M42 HOO Orion Great Nebula, patrice_so
M42 HOO Orion Great Nebula
Powered byPixInsight

M42 HOO Orion Great Nebula

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Description

After months of poor weather, the Moon out brought me to shoot M42 using a duo narrowband filter for the first time. This is 42*240s and 21x120s of exposure using a duo narrowband l-ultimate filter and an ASI294MC pro together with on a TS quartz 200/800 newtonian scope. While it caused me some initial worries, I was finally able to come with quite optimal flats and darkflats to handle the apparently very common difficulty arising from the use of the ASI294MC with duo narrowband filters. Extracted Ha and OIII files were indeed very clean.

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M42 HOO Orion Great Nebula, patrice_so