Tuesday, November 29, 2022

CH Cygni 25th November 2022

We again had some clear weather last Friday the 25th November. The moon was 2 days past new and not a problem. I went out to observe the variable star CH Cygni. At 18.29 UT I discerned that CH was a bit brighter than star A (=6.5mag.) on BAA chart 089.04 but much fainter than star L (=5.7 mag.). My estimate was L(3)V(1)A which made it magnitude 6.3.

I think this result was right and that CH was the brighter side of star A, however, observations on the 23rd and 24th of November put this star at magnitude 6.7 and 6.9 which is much fainter. I am not worried by this because I am pretty sure of what I saw.

All text and images © Duncan Hale-Sutton 2022

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