#Sky and telescope magazine iso#
This is a stack of 8 x 6-minute exposures with the Canon EOS Ra mirrorless camera at ISO 1600 through the Astro-Physics Traveler apo refractor at f/6 with the Hotech field flattener. The small cluster below NGC 896 is Tombaugh 4. The large loose star cluster at centre is Mel 15 the star cluster at left is NGC 1027. The round nebula at top right is NGC 896. The large emission nebula IC 1805 in Cassiopeia, aka the Heart Nebula. Here, I present a selection of sample images taken with the new EOS Ra.ĭetails on its performance is at my “first-look” review at Sky and Telescope magazine’s website.
The EOS R is a full-frame mirrorless camera with a sensor similar to what’s in Canon’s 5D MkIV DSLR. Now in 2019, seven years after the 60Da, we have the newly-released EOS Ra, the astrophoto version of the 30-megapixel EOS R released in late 2018. Seven years later, in 2012, Canon released the 18-megapixel 60Da, a camera I still use and love. In 2005 Canon introduced the ground-breaking 8-megapixel 20Da, the first DLSR to feature Live View for focusing. Once every 7 years astrophotographers have reason to celebrate when Canon introduces one of their “a” cameras, astronomical variants optimized for deep-sky objects, notably red nebulas. I had the chance to test out an early sample of Canon’s new EOS Ra camera designed for deep-sky photography.
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