Rodney Campbell's Blog

The Core

by on Aug.09, 2019, under Life, Photography

The Core

The Core

NIKON D750 + 35.0 mm f/1.4 @ 35 mm, 90 sec at f/2, ISO 800 x 17 Frames

One of the pieces of photography kit I invested in before this trip was an equatorial mount (more commonly known as a star tracker)

A star tracker allows photographers use longer focal lengths, smaller apertures and lower ISOs than you’d typically be able to use when shooting the night sky

I have the SkyWatcher Star Adventurer Mini kit

This allowed me to shoot with the 35mm f/1.4 lens at f/2 for 90 second exposures (tracked with the stars) of just a smaller section of the milky way core. This was rather than the typically very short 6 second (NPF rule) exposures I’d normally have to shoot with this lens untracked

In addition to this I also used the Starry Sky Stacker software to stack 17 of these 90 second exposures to reduce overall noise

This image is the end result of that process

I shot the tracked images at ISO 800 (instead of the ISO 12600 I would have had to with a 6 second exposure). Note – as I shot at ISO 800 I don’t really believe there was any noticeable difference between this final stack of 17 frames compared to just one of the original frames


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