Hemisphere:  Southern  ·  Contains:  42 c Ori  ·  45 Ori  ·  NGC 1973  ·  NGC 1975  ·  NGC 1977  ·  NGC1973  ·  NGC1975  ·  NGC1977  ·  Sh2-279  ·  The star 42Ori  ·  The star 45Ori  ·  the Running Man Nebula
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NGC 1977 (NGC 1973, 1975), 


            Alex Woronow
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NGC 1977 (NGC 1973, 1975)

Technical card

Astrometry.net job: 4110651

RA center: 5h 35' 13"

DEC center: -4° 49' 35"

Pixel scale: 0.945 arcsec/pixel

Orientation: 15.502 degrees

Field radius: 0.345 degrees

Resolution: 2085x1600

Data source: Amateur hosting facility

Remote source: Heaven's Mirror Observatory


NGC 1977 (NGC 1973, 1975)
Camera:………….SBIG STXL11002 with AOX and FW8G (0.63 arsec/pxl)
Observatory:…. Heaven’s Mirror, Chile

…R…..…8 x 900 sec.
…B…....8 x 900
…G…….8 x 900
…L…….13 x 900
…H..….11 x 1800
Total exposure 14.8 hours

Image Width: 33 arc-minutes
Processed by Alex Woronow (2020) using PixInsight, Topaz, 3DLut, SWT

Yet another nebula located in the constellation of Orion, this HII region contains both emission nebulae (red) and reflection nebulae (blue). The star 42 Orionis probably illuminates the entire reflection nebula. (42 Orionis is the bright star just about in the center of this picture.)

Have you ever used the word “proplyd” in a conversation, say with a Handy Hardware Man? Well, as I just learned, it’s a quick way to say, “ionized protoplanetary disk.” Well, there are six of those hidden in this picture. I would love to point them out, but the CDK17 just doesn’t have the resolving power that the HST has, so let me tell you that they lie in a shock wave only 48x as far from the young, hot star 42 Orionis as the Earth is from the Sun.

Nonetheless, I hope you see details in this image that most powder-puff renditions miss.



Alex Woronow
License: Attribution-NonCommercial-NoDerivs Creative Commons

Sky plot

Sky plot


NGC 1977 (NGC 1973, 1975), 


            Alex Woronow