Partial Solar Eclipse - March 29th, 2025

A small selection of the Phenomenon in some images taken and an animation of several pictures taken with different focal lenghts.

I didn't use the Celestron C8 or the Newton 150/750 because they need time to be on a right temperature before to be used.
The mirror's shape is only optimal when it's in thermal equilibrium with the outside air ; otherwise, thermal expansion causes a slight change in the surface, which is detrimental to image quality. The only solution was to let the telescopes cool down through contact with the outside air.

When you take the telescope out, especially in cold weather, the temperature difference between the air in the tube and the outside air causes turbulence that blurs the images.

The problem is that the weather forecast predicted rain. By security, I didn’t take them out.
Of course, the rain never came. I only used the small refractors, which don't really require this ; a few minutes are enough.

I was able to enjoy a partially clear sky. Not easy at times, but it was doable.

Several configurations were running simultaneously to obtain different results.

A total solar eclipse will occur on August 12th, 2026.

Animation with different focal lengths

Captures in Calcium

FS60 equipped with its SolarMax 40 dual stack, BlockFilter BF10, GlassPath x1.7, and ZWO camera, to see what the Sun will look like before the eclipse.

Captures in H Alpha

Clear Sky !

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