Image Description and Details:

Barnard 174 (=LDN1164) is a very dense dark nebula, which absorbs starlight behind the nebula. Infrared observations show many young stars in this region. Thus, B174 is an active star-forming region. Barnard 174 is a dark nebula in the constellation Cepheus. Dark nebulae or "fog" as they are sometimes called are clouds of cold gas, at temperatures near absolute zero (-273°C), located in cold, dense areas of larger molecular clouds . Their thickness obstructs the visible spectrum of stars or anything in its path. Only infrared and x-ray observations can be made through fog. The dark color is due to microscopic dust particles coated in frozen carbon monoxide and nitrogen, which block visible light. Equipment: TAKAHASHI Epsilon 130D Camera Zwo ASI2600MC CEM120 ioptron mount Acquisitions with NINA Pixinsight and Photoshop

Copyright: LAMAGAT Frédéric

Image Description and Details :

NGC 7822 is a young star forming complex in the constellation of Cepheus. The complex encompasses the emission region designated Sharpless 171, and the young cluster of stars named Berkeley 59. The complex is believed to be some 800–1000 pc distant, with the younger components aged no more than a few million years. The complex also includes one of the hottest stars discovered within 1 kpc of the Sun, namely BD+66 1673, which is an eclipsing binary system consisting of an O5V that exhibits a surface temperature of nearly 45,000 K and a luminosity about 100,000 times that of the Sun. The star is one of the primary sources illuminating the nebula and shaping the complex's famed pillars of creation-type formations, the elephant trunks.

Détails acquisitions :
HA 105 x 300s
O3 60 x 300s
S2 63 x 300s
soit 19H total
ave la lunette askar400 + red
camera asi264MM
monture ioptron CEM120
Traitement Pixinsight et Photoshop

Copyright: Lamagat Frédéric