Optical Tests

To better understand how different imaging trains work, I’m keeping a running list of lens/telescope tests here. Click on any link below to view test images and results for that particular optical setup.


Hoya Intensifier (Red Enhancer)


Canon EF 35mm F/1.4L USM + Hoya Intensifier
Canon EF 50mm F/1.8 II STM + Hoya Intensifier
Rokinon 85mm F/1.4 AS IF UMC + Hoya Intensifier


Celestron C11 Starbright + Celestron 0.63x Reducer/Corrector
Explore Scientific ED127CF Triplet APO + 0.7x Reducer/Corrector

Common Issues

Thermal Focus Shift