Wayne Baggett
unread,Apr 21, 2026, 12:43:36 PM (7 days ago) Apr 21Sign in to reply to author
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to howardastro
Hi,
After the iffy conditions during the day, the night turned out to be
nearly perfect! The daytime clouds disappeared by sunset, and the
afternoon winds died completely by the time it was dark. The
transparency was much better than average, and the seeing was average or
a little better. The temperature hit freezing at about 1am, so it was
as cold as forecast. My Sky Quality Meter recorded the sky brightness
as low as 19.95mag/square arcsec; its been a long time since I saw a
value that low, and is probably a reflection of the good transparency.
It turned out that I was the only person in the park all night, and I
spent my time collecting more photons on M81 (Bode's Galaxy) for April's
Object of the Month project. The four hours I gathered tonight brings
me to a total of 13 hours in LRGB on M81. I have attached a preliminary
version of the image based on 9 hours collected earlier in the month.
I finished my imaging at about 1:40am, then collected flats, refocused
my guide camera, and packed up. I locked the park gate at 3:20am.
Wayne
M81_LRGB_Try2_crv_GHS_crv_mmt_CCSD_Caption_40pct.jpg