The dark nebulae Barnard 142 and 143 seem out of place in this rich star field. Writing about this region of the sky in the early part of the 20th century Edward Emerson Barnard said “The dark markings are perhaps the most important features of the plate (No.41). The fact that they occur in so rich a region of the sky, where the depth of the star stratum must be very great, leads to the belief that they are not real vacancies penetrating through the entire cloud, but that they are more probably obscuring matter of some kind.”
Date: June 8, 2010
Constellation: Aquila
Location: Pearson College Observatory, BC
Optics: TeleVue NP-127is used at f/5.2
Mount: Losmandy G-11
Camera: Hutech modified Canon EOS 5D Mark II
Exposure: 13 RAW light frames of 120 seconds, ISO 800
Processing: Light frames calibrated with dark and flat frames in ImagesPlus. Light frames normalized and combined using MinMax Excluded.