About image Barnard 142 (on the right of the image) and Barnard 143 (on the left) are a couple of dark nebulae in Aquila constellation. This couple is also known with the name of E nebula due to the resemblance to this letter. B143 is the darkest and also the largest and completely masks the light of the stars behind it, while B142 is less dense, allowing some background starlight to pass through. The distance of the two nebulae complexes is estimated at about 2000 light years from us. This image is a crop of the original image field due to an annoying reflection of the near bright star Gamma Aquilae.
Technical data Optic TS Optics 76 EDPH - Aperture 76mm, focal lenght 342mm, f/4.5 Mount Skywatcher EQ6R Camera ZWO ASI 294MM Pro with external filter wheel 7 positions Filters Antlia 36mm LRGB Guiding system Artesky Ultraguide 32mm Exposure details L 15x120" bin2 -15C R 16x120" bin2 -15C G 16x120" bin2 -15C B 16x120" bin2 -15C
Gain 120, offset 30 Total integration 2h6' Acquisition Voyager, PHD2 Processing Pixinsight 1.8, Photoshop CS5 SQM-L NA Location Pian dell'Armà (Pavia, Italy) Date 6 August 2021