![]() The dark lane separating M43 from the gigantic Orion Nebula is easily visible. M43 doesn't show as much range in brightness or detail as M42, but it has a bright ring around the star, which in turn is surrounded by the fainter comma shaped nebulosity. Through a 100mm (4-inch) telescope, the centre star appears bright. M43 is a nice sight in larger 20x80 binoculars, with the nebula appearing defined and looking somewhat comma shaped. This star excites the surrounding gas causing the nebula to shine and varies in brightness between magnitudes +6.5 and +7.6. NU Orionis, the irregular young star at the heart of M43, is easily visible in binoculars. In 10x50 binoculars, M43 appears as a small, faint fuzzy elongated patch with a noticeably brighter centre. M43 (and M42) are best seen during the months of December, January and February.įinder Chart for M43 - pdf format (credit:- freestarcharts) M43 is located just 8 arc minutes north of M42 surrounding a 7th magnitude star. Of course, finding M42 is easy, it's positioned 5 degrees south of the three bright stars that form Orion's belt (Mintaka, Alnilam and Alnitak). Firstly, it's located in majestic Orion, perhaps the most recognizable of all constellations, secondly it's part of the Orion Nebula and therefore positioned right next to the great showpiece object and finally it has a relatively high surface brightness. nebulae like M43 can be difficult to find - especially if located in barren parts of the sky - but not this one. of +9.0, M43 is about 100 times fainter than M42, but still bright enough to be seen with binoculars. ![]() As part of the famous Orion Nebula (M42), it's positioned just north of the main nebula and separated from it by a narrow dust lane. M43 is a HII region located in the constellation of Orion that was discovered by Jean-Jacques Dortous de Mairan sometime before 1731. ![]()
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