I captured a wide-field image of the Iris Nebula region, located in Cepheus, using my Rokinon 135mm prime lens at f/2.8. This lens was attached to my Canon 1300D DSLR camera, which was mounted on a Star Adventurer 2i pro tracking mount. The settings were 50 seconds and ISO 800. I took 50 light frames, 25 dark frames, and 50 flat frames, all stacked in DeepSkyStacker and processed in Siril and GIMP 2.10. Additionally, I used an intervalometer for camera control and a Bahtinov mask to achieve precise focusing on a star. The image was taken under Bortle 5 skies.
Click on the image to get a closer view
The Iris nebula region
Chris Playle
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