Vertical mosaic. LENR on ISO 16,000. Sigma 50mm f/1.4 lens at f/1.6.
This image is a vertical panorama of two 15 sec exposures at ISO 16,000. The two halves were combined in Adobe Lightroom CC.
To reduce noise in the foreground, I shot it again with a longer exposure at lower ISO
Composite separate foreground panorama that has better aligned horizon and longer exposure, and overlayed it on the noisy background using Photoshop.