WARNING – Comet now less than 6° from the Sun. Do not attempt to look with the naked eye or binoculars unless the Sun is hidden e.g. by a building. Observation with SCT telescopes is risky since sunrays may hit the primary mirror and concentrate besides the secondary mirror, therefore over-heating its mount. Do not point at the comet for long periods; use a long baffle in front of the telescope.

Some clearings came over Munich, allowing visual observations of McNaught: C11, x110, orange filter / no filter: pseudo-nucleus surface brightness at least as large as Venus; hints of an antisolar shell, better visible during « eclipses » = Sun behind clouds but comet in blue sky.
Many images taken with D100 and C11, Contrast Booster & no filter, f/11 & f/22. Here a composite of 3 images, no filter, f/11, 1/2000s, ISO 200, 10:45 UTC, cropped to FOV = 13′.
Some videos taken before clouds arrived. Now, clearings are coming again, thus I’ll go to EPO room 7917 within 1 hour.

jld