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re.(IAAC) Obj: M33 (NGC 598) - Inst: 20" f4.4 Newtonian
----
Please forgive my typo's in this report, I did it last thing at night. Here
is a corrected version of the description.
Description:
M33 was conpicuous in the 7X50 finder. Using a 12 mm Nagler eyepiece in the
20" the galaxy filled most of the field. For the first time when (often)
observing it, the galaxy showed clear spiral structure, distinct spiral arms
were visible. One arm extended from the bar like region S of the nucleus to
the bright H II region, NGC 604. Another arm goes out at pa.100 curling
round to pa.170, a third arm emerges at pa.110-120 and curls round into a
diffuse region about 1/2 field width S of the core. The galaxy core shows a
bright nucleus and resembles a barred spiral in the core with a central bar
running pa. 90 to pa. 270. At a pa.270 from the core is another bright
knot, another H II region. Other bright knots and condensation were visible
in the arms, one at pa.160 and about 1/3 eyepiece width out from the
nucleus, another brighter region due S of nucleus, 1/4 eyepiece width from
it. At pa 180 a broad arm spreading out round passing round the westerly
(preceding) HII region before coming lost in the diffuse background. The
nebulosity extends about 2/3 eyepiece width in E direction and about 1
eyepiece width northwards. W and slightly south there are definite
condensations
in the spiral arm, further round there is another condensation about 1/3
width of Jupiter like a small brighter patch about 15" across in the same arm.
The central core is mottled and around the nucleus is a lobed brighter
region. The HII regions showed strong contrast when viewed through the UHC
filter. This galaxy really repays careful observation on a clear night.
--
Nick Martin, Bonnyton House, By Ayr, Ayrshire KA6 7EW ,Scotland, UK.
Latitude 55 24'56" Longtitude 4 26' 00".
"Had I the heavens' embroidered cloths,
Enwrought with golden and silver light,
The blue and the dim and the dark cloths
Of night and light and the half-light, ....."
He Wishes For The Cloths Of Heaven by W.B. Yeats
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