Objects

IC 410

A faint, dusty rose of the northern sky, emission nebula IC 410 lies about 12,000 light-years away in the constellation Auriga. The cloud of glowing hydrogen gas is over 100 light-years across, sculpted by stellar winds and radiation from embedded open star cluster NGC 1893. Formed in the interstellar cloud a mere 4 million years ago, bright cluster stars are seen just below the prominent dark dust cloud near picture center. Notable near the 3 o'clock position in this wide, detailed view are two relatively dense streamers of material trailing away from the nebula's central regions. Potentially sites of ongoing star formation, these cosmic tadpole shapes are about 10 light-years long.

L = 17 * 900 sec. bin1, R = 14 * 1000 sec. bin2, G = 14 * 1100 sec. bin2, B = 14 * 1200 sec. bin2, Ha = 12 * 1800 sec. bin1, OIII = 14 * 1800 sec. bin1

Total 30 hours.

Pixinsight 1.8 and Photoshop.

IC 410

NGC 4111

NGC 4111 is a lenticular galaxy in the constellation Canes Venatici. It is located at a distance of circa 50 million light years from Earth, which, given its apparent dimensions, means that NGC 4111 is about 55,000 light years across. It was discovered by William Herschel in 1788.

L = 21 * 1200 sec. bin1, R = 13 * 1000 sec. bin2, G = 13 * 1100 sec. bin2, B = 15 * 1200 sec. bin2.

Total - 19.6 hours

Pixinsight 1.8, Photoshop.

may 2018, march-april 2019

NGC 4111

NGC 4414

NGC 4414 is an unbarred spiral galaxy about 62 million light-years away in the constellation Coma Berenices. It is a flocculent spiral galaxy, with short segments of spiral structure but without the dramatic well-defined spiral arms of a grand design spiral.

NGC 4414 is also a very isolated galaxy without signs of past interactions with other galaxies and despite not being a starburst galaxy shows a high density and richness of gas - both atomic and molecular, with the former extending far beyond its optical disk.

L = 62 * 900 sec. bin1, R = 15 * 1000 sec. bin2, G = 15 * 1100 sec. bin2, B = 15 * 1200 sec. bin2.

Total - 29.25 hours.

Pixinsight 1.8, Photoshop.

march-april 2019

NGC 4414