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  ·  IC 420  ·  Lower Sword  ·  M 42  ·  M 43  ·  Mairan's Nebula  ·  NGC 1973  ·  NGC 1975  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1981  ·  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  ·  Upper Sword  ·  the Running Man Nebula
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Great Orion and Running Man Nebulae from Bortle 4, Peter Horvat
Great Orion and Running Man Nebulae from Bortle 4
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Great Orion and Running Man Nebulae from Bortle 4

Getting plate-solving status, please wait...
Great Orion and Running Man Nebulae from Bortle 4, Peter Horvat
Great Orion and Running Man Nebulae from Bortle 4
Powered byPixInsight

Great Orion and Running Man Nebulae from Bortle 4

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Acquisition details

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Description

Shot around midnight on the night of Jan 1 from Lesce, Slovenia. 

Bortle: 4

Mount: iOptron SkyGuider Pro on EQ5 level tripod    

Camera: Nikon D5300 (stock)    

Telescope: TS Optics Photoline 72mm f/6 doublet APO

Filter: none

Field flattener: TS Optics Red279 (0.79)    

Acquisition: stack of 110 30 sec exposures (total exposure 55 mins) @ ISO 200 with no calibration frames. Captured using in-built intervalometer. 

Processing: Siril stacking with median sigma clipping at sigma=2. Crop, arcsinh stretch, photometric color calibration,  background extraction, some deconvolution and green noise removal. / Post processing in Photoshop 2020: levels, curves, camera raw filter (basic sliders, noise reduction), Astrophotography tools action set  (local contrast enhancement),  selective color to fine tune contrast / HDR on the M42 core with masking brush and adjusting curves on the masked layer.

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Great Orion and Running Man Nebulae from Bortle 4, Peter Horvat