IC 2631, Ced 110, Ced 111 - Part of the Molecular Cloud Chameleon I

© Velimir Popov & Emil Ivanov 2021
Size: 2000 px

This image shows a part of Chamaeleon I, a nearby region of low mass star formation, located at a distance of 500 light years from Earth. The entire cloud covers an area of 5 square degrees and is one of the closest regions of star formation. IC 2631 reflection nebula is the brightest part of the Chameleon molecular cloud. The star responsible for the lighting of the gas in the direction of IC 2631 is a young star HD 97300, a T Tauri star with infrared excesses, to the point that it also has the initials Ced 112 IRS 3. This star is a member of Chamaeleon T1, a group of T Tauri stars physically tied to the Chamaeleon I cloud, in which it has been formed. Cederblad 111 is a blue reflection nebula, also embedded in Chamaeleon I. The image shows also two deeply red Herbig-Haro objects: HH 49 and HH 50. These small patches of nebulosity are associated with newly born stars. They are formed when gas jets ejected by young stars collide with nearby gas and dust clouds. The yellowish nebula GN 11.07.3 is unusual because it has no obvious illuminating star. Its spectral energy distribution rises rapidly towards the infrared part of spectrum. Parts of the cloud that are not illuminated by nearby stars appear as dark nebulae. Most of them are described and cataloged by Aage Sandqvist in his 1977 catalogue of dark nebulae.


Image details:


Center of field RA 11:09:06 (h:m:s)
Center of field DE -77:07:14 (deg:m:s)
Size 1.4 x 1.4 (deg)
Pixel scale: 2.53 (arcsec/pixel)
Orientation: Up is 358 degrees E of N
Charts and image details obtained from Astrometry.net
Optic(s): 16" f3,75 Dream Corrected Astrograph (DCA)
Mount: Astelco NTM-500 direct drive mount
Camera: Apogee Alta U-16M CCD camera
Filters: Lum, Red, Green, Blue Astrodon
Dates/Times: 15 May. 2013
Location: Namibia-TIVOLI ASTROFARM, S 23° 27' 40,9" / E 18° 01' 02,2"
Exp. Details:

L:5x10min, R:4x10min, G:4x10min, B:4x10min, Bin 1 Total Exposure Time 170 min.

More details: Dark and flat frames reduction
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2021. All Rights Reserved
click tracking