MrEclipse has the rare distinction of being an old photography guide that survived long enough to explain both film and digital cameras without throwing either one away.
Read MrEclipse’s lunar eclipse photography guide
Fred Espenak’s page walks through the practical problems of photographing a lunar eclipse: camera choice, focal length, exposure, tripod stability, star trails, multiple exposures, telephoto work, image scale, and the huge change in brightness that occurs as the Moon enters Earth’s shadow.
The examples span decades.
A 1982 total lunar eclipse was captured on Ektachrome 400 with a 50mm Nikkor lens. A 2000 eclipse used Kodak film for a multiple-exposure sequence. Later sections explain DSLR histograms, digital compositing and the crop-factor difference between 35mm film and common digital sensors.
The result is less a dated tutorial than a visible history of astrophotography changing underneath one subject.
The Moon did not change. The workflow did.
Some advice remains beautifully mechanical.
The Moon moves across the sky at roughly fifteen degrees per hour. A lens determines the available field of view. Long exposures produce trails because Earth rotates. Very long focal lengths magnify the Moon but make framing and vibration more difficult.
Other advice belongs to a specific photographic era: load the film, use a cable release, make sure the camera is taken out of multiple-exposure mode, and advance a few frames so the next photograph does not land on top of the eclipse you just spent hours recording.
The guide also explains the Danjon scale, which ranks the brightness and color of a total lunar eclipse from very dark to bright copper-red or orange. Because totality can vary dramatically, Espenak recommends using exposure tables as a starting point and bracketing rather than pretending one setting will work every time.
That practical caution is why the page ages well.
CacheRat’s 1,967 Ancient Web Domains research list contains many technical pages whose equipment is old but whose underlying reasoning remains useful.
MrEclipse is one of them.
Cameras changed. The geometry did not.