Celestial hemisphere:  Southern  ·  Constellation: Tucana (Tuc)  ·  Contains:  47 Tuc  ·  NGC 104
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47 Tucanae, Simon
47 Tucanae
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47 Tucanae

Getting plate-solving status, please wait...
47 Tucanae, Simon
47 Tucanae
Powered byPixInsight

47 Tucanae

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Description

Experiment with very short subs, nevertheless required as at even 5 seconds the stars started to max out the signal.

On the night I used unity gain @139, but found the camera so sensitive that I had to go down to 10 second subs to remotely get any star colours. In the end I also used a smaller series of 5 second subs to get more detail of the core, so the acquisition time is really another hour.

After processing I realise that I should have used much lower gain to get even better colours. But this was only my second image with the new ASI1600 camera, taken back in late October, so I've learned plenty since then!

A couple of fascinating little clusters/mini gals in the image, in the top right and lower left, would make amazing deep targets one day.

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47 Tucanae, Simon