Wednesday, September 2, 2026

First look at the September Milky Way

 After a long string of cloudy or moonlit nights, there was finally a clear sky last night (01 Sep) with about 40 min of darkness between the end of astronomical twilight at 9:08 pm and the rise of the 19.9-day waning gibbous Moon.  The measured sky brightness was 21.4 mpsas, which is very good but not exceptional (for this area),

The following images were obtained with a Panasonic Leica 12mm f/1.4 lens and an OM-5ii camera.

 

Sparkle-6 filter

 

low-pass digital filter

The image above was obtained with no physical filter on the lens, but a digital low-pass filter (3x3 median) was applied in post-processing.  This suppresses the myriad faint stars and lets the dark dust clouds of the Milky Way stand out more clearly.

 

Arcturus in the airglow above Bristol Head. Softon filter

View to the north: Big Dipper and Little Dipper.  Softon filter