Hello all,

I am not very experienced in filters and I have been watching the Pliades and Venus converging on the sun. I noticed that The Pliades and Venus are not visible in the LASCO C2 images, but are plainly visible in the LASCO C3 images. Anyone know what the differences are or why this is?

Thanks in advance.

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Turning and turning in the widening gyre
The falcon cannot hear the falconer;
Things fall apart; the centre cannot hold;
Mere anarchy is loosed upon the world

This belongs in Astronomical Observing, Equipment and Accessories.

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A person's name, or a mark representing it, as signed personally or by deputy, as in subscribing a letter or other document.

Sorry about that. For some reason (probably the fact that it was 4:30 AM) I thought I was in that section. Please move.

__________________
Turning and turning in the widening gyre
The falcon cannot hear the falconer;
Things fall apart; the centre cannot hold;
Mere anarchy is loosed upon the world

LASCO C3 images go out to ~30 solar radii, but LASCO C2 only goes to ~6 solar radii. The Pleiades and Venus should enter the field of view of the C2 coronagraph in a few days. I couldn't find a description of what filters are used in the "real time" images on the LASCO homepage, or on SOHO's website, but you might have more luck. But both Venus and the Pleiades should be visible when they come into the field.

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"What do you care what other people think?" -- Richard Feynman
"For a successful technology, reality must take precedence over public relations, for nature cannot be fooled." -- Feynman, at the conclusion of his Challenger report