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 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
M 42, Aurelio55
M 42
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M 42

M 42, Aurelio55
M 42
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M 42

Equipment

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Acquisition details

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Description

Piani dell'Avaro, Bergamo, Italy
Astro-Physics  Apo Triplet 155 EDF f/7,  flattener AP,  ASI 2400 MCPro,  ASIair
78 x 1", bin 1, gain 0, filter IDAS NBZ, - 30° C, flat 15, dark 10
250 x 25", bin 1, gain 0, filter Optolong IR/UV Cut, - 30° C, flat 15 no dark
60 x 60" bin 1, gain 200, filter Optolong L-Enhance
10 Micron 2000 HPS, unguided
DSS e PS CC

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M 42, Aurelio55