Friday, 16th July,2021. 7.50am.
The one spot of Region 2842 looks unchanged. (Solar Projection)
Through the Vixen 81mm, a small umbra was still visible. The other two spots seen yda have disappeared. (using 42x, a solar filter and a green filter). I am finding that the solar image is clearer at 42x than 52x.
Now that I have a solar filter, I am planning to take a photo or two when interesting features appear. Is there any filter that is advisable to use when taking 'white'-light images?
Quote:
Originally Posted by Merlin66
Bob,
Using the green filter gives a bit more contrast and the sensitivity of the eye is greater in the green, improving the perception.
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Thanks Ken,
I guess that is why Moon filters are normally green.
