2020-04, comets from city center.

Tried to image a couple of comets from my parents’ backyard, a 5 minute walk from my own apartment. With over 200,000 inhabitants the light pollution in the city of Almere is huge. Naked eye limit is approximately magnitude +4, so visual observations are limited to the moon and planets. Nevertheless I was succesvol in imaging the currently visible comets: C/2017 T2 (PANSTARRS), C/2019 Y1 (ATLAS) and C/2019 Y4 (ATLAS). Equipment used was a William Optics Star 71 telescope (71mm, f=348mm) and EOS R camera mounted on a Rainbow Astro RST-135 mount. Also tried the new software for the Staraid autoguider with the new option guiding on objects like comets. For the last images I installed my good old IDAS Light Pollution Suppression filter inside the telescope.

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2019-11-11, Mercury transit.

Planned my holiday to La Palma (the Canary Islands) as to coincide with the Mercury transit. The weather was very sunny, but incredibly windy. I could only observe the start of the transit as the seeing grew worse and worse every minute. In fact the observatory on the Roque de los Muchachos issued a storm warning. I shot the transit from start to finish but only the images from the first 30 minutes were usable.

All images where shot with a Canon EOS 70D, paired with a Canon EF 300/4 @f/10 and Extender 2x-A, ISO125, 1/6400s.