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Venus 2021-02-04 (UT)
The almost circular Venus will be the outer conjunction (on the other side of the Sun) on March 24th.
This is the first time I have observe Venus in this phase. Although it is a small circulr, seeing is relatively good, and I can see the beautiful it.
The apparent diameter of Venus was as small as 10 arcseconds, and it was only a featuren that was not clear even with UV and IR.
Since sunlight enters the 45 cm telescopel and lowers the contrast, I attached an eccentric diaphragm with a diameter of 17 cm to take an image.