NGC6723, NGC6726, NGC6727, EtaCrA and HR7170 in Corona Australis

[tim.anderson (Tim Anderson)]

Comprising sixteen 180-second exposures with a Skywatcher Esprit 100mm refractor and an ASI2600MCProDuo on a ZWO AM5 mount, guided using the Duo. Processed in PixInsight and Photoshop. Embiggened at: https://www.astrobin.com/full/yr4z5l/C/?mod=&real=

[gb44 (Glenn)]

Interesting bit of blue nebulosity there Tim.

Maybe a bit of star bloating and an unusual bit of star trailing. Do you use an IR filter or is there one in the imaging train? I check each sub with digital development set way high and if you check your subs you might find just one to eliminate that has star trailing - some mount settling issue maybe - bit of RA and DEC?

Or a big snake went past and bumped the tripod?

Puzzled, I am.
GlennB

[tim.anderson (Tim Anderson)]

Originally Posted by gb44

Interesting bit of blue nebulosity there Tim.

Maybe a bit of star bloating and an unusual bit of star trailing. Do you use an IR filter or is there one in the imaging train? I check each sub with digital development set way high and if you check your subs you might find just one to eliminate that has star trailing - some mount settling issue maybe - bit of RA and DEC?

Or a big snake went past and bumped the tripod?

Puzzled, I am.
GlennB

So was the snake.