Einstein may have been unclear that to get so much as that one arc second of displacement, you have to point the scope right at the edge of the sun. One can se

Einstein may have been unclear that to get so much as that one arc second of displacement, you have to point the scope right at the edge of the sun. One can see venus with the naked eye during the day - but not when it is near the sun. I expect that a red filter would get rid of some of the scattered atmospheric light. A telescope should be able to see some of the brighter stars during the day. But to get the scope so near the edge of the sun that you can measure that arc-second displacement, you'd have quite a lot of sunlight entering the telescope. The atmospherically scattered light in that region is quite intense. One can use an "Occulting Disk" but they are of limited effectiveness. When the sun is in the sky, hold your hand out at arm's length, then block the sun with your thumb; you'll see that the skylight is quite bright around your thumb. That's not from the solar corona - not much of it - but from atmospheric scattering.