HOO Wide-field

I used Sigma 20mm/Art for the winter constellations.

Sigma 20mm/Art @ F2.2 + ASI2600MM, IDAS Ha & OIII UHS 52mm

You can see huge coma at each corner. It is obviously the sensor was too short as shown below. I might have removed spacers by some reasons. I have to try again.

BTW, as a Player One’s US supplier, I started the new project – the filter drawer for Player One cooled cameras and Canon EF lenses. Exactly same as above ZWO set up. But we intend to add the camera rotating function and mounting bracket. So it should be much more convenient. I will show it up one 1st sample will come up. Stay tuned.

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~ by tedishikawa on November 27, 2022.

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