NGC 6729 (also known as Caldwell 68) is a reflection/emission nebula in the constellation Corona Australis. It was discovered by Johann Friedrich Julius Schmidt in 1861.
This fan-shaped nebula opens from the star R Coronae Australis toward the star T CrA to the south-east. R CrA is a pre-main-sequence star in the Corona Australis molecular complex, one of the closer star-forming regions of the galaxy at a distance of 130 pc.
This image also contain NGC 6726,6727, IC 4812 and NGC 6723 which is a Planetary star cluster as also known as Chandelier star cluster. A "small" galaxy located to the upper left of IC 4812 and a planetary nebula shown as a red circle can also be seen in this image locate to the right of IC 4812.
This image were taken from Negev desert Israel on July 17-18, 2020, two nights imaging sessions, Moonless nights.
In both nights I couldn`t start imaging until 10:30pm because of a strong wind, at exactly 10:30pm the wind calm down and imaging started.
This is an LRGB version:
Lum: 71x180sec @ -10deg c` bin 1x1
R: 18X300sec @ -10deg c` bin 1x1
G: 18x300sec @ -10deg c` bin 1x1
B: 18x300sec @ -10deg c` bin 1x1
Total integration time for subs: 8 hours.
Calibration frames: Dark- 20, Bias- 100, Flat- 30 were combined for each filter.
Mount- iOptron IEQ45 Pro.
Scope- Tak FSQ85EDX.
Camera- Starlight Xpress Trius SX694 mono & SX Filter Wheel Filters- Astrodon 36mm unmounted E series Gen2 LRGB
Guider- SX Lodestar x2 & SX OAG.
Power & data control: Pegasus UPBv2.
Focus control: Pegasus stepper motor v2 kit.
Camera & mount control- SGP via Ascom
Sky chart- Stellarium
Mount main control- iOptron via Ascom
Registration, Calibration & stacking images- Maxim DL5
Processing- PS CS6