Monday, July 29, 2024

Dark sky, bright Milky Way

 The 10-pm sky on 28 July was darker than average with a measured value of sqml=21.73 mpsas.   These images were obtained with a Sony A7iii camera and a Rokinon AF 35mm f/1.8 lens, ISO 1600, 30 s.

Milky Way core. Hoya Sparkle-6 filter.

Hoya Softon-A filter.

Softon filter.

There are current predictions of aurora visibility at middle latitudes.  Nothing was visible last night to the unaided eye.  The Bristol Head ridgeline was silhouetted against some kind of background glow, but it could be just normal airglow.

Big Dipper over Bristol Head.  Softon filter.

 

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