Messier 110, also known as NGC 205, is a dwarf elliptical galaxy that is a satellite of the Andromeda Galaxy. M110 contains some dust and hints of recent star formation, which is unusual for dwarf elliptical galaxies in general.
L = 18 * 1800 sec. bin1, R = 11 * 900 сsec bin2, G = 11 * 1000 sec. bin2, R = 11 * 1100 sec. bin2.
Total exposition - 18.2 hours.
Pixinsight 1.8, eXcalibrator, Photoshop.
Winnecke 4 (also known as Messier 40 or WNC 4) is a double star in the constellation Ursa Major. It was discovered by Charles Messier in 1764 while he was searching for a nebula that had been reported in the area by Johannes Hevelius. Not seeing any nebulae, Messier catalogued this double star instead. It was subsequently rediscovered by Friedrich August Theodor Winnecke in 1863, and included in the Winnecke Catalogue of Double Stars as number 4. Burnham calls M40 "one of the few real mistakes in the Messier catalog," faulting Messier for including it when all he saw was a double star, not a nebula of any sort.
R = 14 * 400 sec. bin1, G = 14 * 480 sec. bin1, B = 14 * 560 sec. bin1.
Pixinsight 1.8, Photoshop, eXcalibrator.
Messier 38 (also known as M38 or NGC 1912) is an open cluster in the Auriga constellation.
It was discovered by Giovanni Batista Hodierna before 1654 and independently found by Le Gentil in 1749. M36 and M37, also discovered by Hodierna, are grouped together with M38 at a distance of about 3,420 light years away from Earth.
R = 8 * 600 sec. bin1, G = 8 * 690 sec. bin1, B = 8 * 780 sec. bin1.
Pixinsight 1.8, Photoshop, eXcalibrator.
NGC 1491 is a bright nebula in the constellation of Perseus. It is also known as LBN 704.
NGC 1491 (also listed in the Sharpless Catalog as SH2-206) is an emission nebula, which means it is a cloud of ionized hydrogen gas and a stellar nursery. The nebula is primarily illuminated by the bright star near the center of this image. This star is not only the primary source of the ultraviolet radiation that is lighting up the nebula, it is also generating an energetic stellar wind that is eroding away the gas of the nebula. At the brightest region of this image near that star, a subtle "bubble" might be seen near that star.
L = 16 * 1800 sec. bin1, RGB = 8 * 1200 sec. bin2, Ha = 26 * 1800 sec. bin2, Ha = 8 * 1800 sec.in the each filters.
Total exposition - 33 hours.
Pixinsight 1.8, Photoshop, eXcalibrator.
