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About this observation
Observer
Ray Emery
Time of observation
26/08/2019 - 16:42
Object
M13, M16, M17, M27
Observing location
Brinkhill
Equipment
Genesis 100mm f5 refractor
Canon 700D modified
CLS filter
Exposure
7mins @ ISO 800; 10 mins @ ISO 1600
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A very rough & ready composite from the last two evenings, each one just 4-6 light frames.

Much thermal noise as well as dust from combine harvesting...

Equal scaling not guaranteed!!

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