Sh2-126 is an emission nebula located in the Lacerta constellation. It is located in the southern part of this constellation, about 1° west of the star 10 Lacertae, a blue variable star (magnitude 4.8 and spectral type O9V) which ionizes the nebula. Invisible to the naked eye due to its magnitude, Sh2-126 has the appearance of a small filament and is mostly visible in astrophotography through Hα (H-alpha) filters.
Thanks Christophe for sharing the raw data.
OPTICS ASKAR FRA400 @ F/5.6
CAMERA ZWO ASI2600MM Pro
MOUNT Sky-Watcher HEQ5 PRO
FILTERS Ha, L, R, G, B
LOCATION Saintes, Nouvelle-Aquitaine, France
DATE August 2023
EXPOSURES 53.1 hours (Ha 216 x 600 sec, L 76 x 600 sec, R 30 x 180 sec, G 30 x 180 sec, B 30 x 180 sec)
PROCESSING SOFTWARE Pixinsight, Photoshop
COPYRIGHTS Christophe Marsaud, Nicolas Rolland
RA 22h 35m 44.5s
DEC +40° 42' 40.1"
SIZE 3.31 x 2.21deg
ORIENTATION Up is 9.7 degrees E of N
CONSTELLATION Lacerta