2018 May 1 Sun - AR12706

各類觀測太陽的儀器介紹及太陽攝影 Solarmax
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2018 May 1 Sun - AR12706

文章 PTS » 週三 02 5月, 2018 15:59

2018 May 1 Sun - AR12706

AR12706 is right on the west limb. No sunspot is observed and the AR.
The most prominent features are the dark filaments that run in opposite directions along the solar limb.

As the slow motion is still unavailable, I have to continue with push or pull the telescope to put the image in field. This task becomes very tedious when working on close-up imaging, and I have to use very short exposures (thus high gain) to avoid blur images.

Telescope: AP Starfire EDT 155 mm f/9.
stopped to 80 mm (f/17.5) for disc images, with 4X telecentric lens (f/36) for closeups
filter: Solar Spectrum SO1.5/0.3A with CERF prefilter
Camera: ASI1600MM, 4656X3520 pixels (3.8 micron), binned 2
North is up, east is to the left.
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