Author: jimchungblog

The World’s First Dual Solar & Lunar ISS Transit Capture

The World’s First Dual Solar & Lunar ISS Transit Capture

As an amateur astrophotographer, one of the greatest celestial phenomena to capture is the transit of the International Space Station across the face of either the Moon or the Sun.   As it crosses either of these bodies, it can form a very sharp silhouette (since  it will be grossly underexposed against a much brighter background) … Continue reading The World’s First Dual Solar & Lunar ISS Transit Capture

Sigma 400mm f/5.6 APO Tele Macro is my new best friend.

This is a telephoto Canon EOS prime lens that Sigma discontinued about a decade ago and they languish on eBay for under $250 USD because they often don't allow proper aperture control when mounted on current Canon bodies.   In older bodies, the camera would issue a sync command twice before requesting lens info and since … Continue reading Sigma 400mm f/5.6 APO Tele Macro is my new best friend.