Thursday, July 27, 2017
These three bright nebulae are often featured on telescopic tours of the constellation Sagittarius and the crowded starfields of the central Milky Way. In fact, 18th century cosmic tourist Charles Messier cataloged two of them; M8, the large nebula above and left of center, and colorful M20 near the bottom of the frame. The third emission region includes NGC 6559, right of M8 and separated from the larger nebula by a dark dust lane. All three are stellar nurseries about five thousand light-years or so distant. Over a hundred light-years across the expansive M8 is also known as the Lagoon Nebula. M20's popular moniker is the Trifid. Glowing hydrogen gas creates the dominant red color of the emission nebulae. In striking contrast, blue hues in the Trifid are due to dust reflected starlight. The colorful composite skyscape was recorded with two different telescopes to capture a widefield image of the area and individual close-ups at higher resolution.
Wednesday, July 26, 2017
I took this photo during the 10th Brazilian Astrophotography Meeting, held near the city of Padre Bernardo in the central part of Brazil (in the state of Goias). It was taken in July 21st at 07:08pm local time and it is a mosaic of two photos, showing the Zodiacal Light stretching almost vertically from the horizon up past Jupiter. In this time of the year and from that position the ecliptic is almost vertical after sunset. I cloud easily see it because that site is far from major cities, being approximately 100km northeast of Brasilia. Visually the Zodiacal Light was visible almost to the zenith.
Right above the horizon the last glimpse of twilight is visible. Also, the first exposure captured a small flare caused by a satellite, seen to the right og the Zodiacal Light.