No subject
Mon Apr 6 13:50:49 PDT 2009
ts.
=20
M-65: Dimensions - 10' x 3'.3 - mag. 9.3. Messier 65 is bright in 6 cm=2C=
a very elongated and concentrated nebula. Low powers show a stellar nucle=
us. It appears fainter than M-66. The N side of M-65 the halo seems quite=
knotted=2C the core is granular. A mag. 12 star is visible 2' SW=3B a fai=
nter star lies about the same distance NE of center. In 30 cm it shows a s=
trong=2C even concentration toward a mottled inner regions and a distinct n=
on-stellar nucleus. Passing E of the nucleus is a dark lane=2C making the =
E side of the nebula generally fainter. Lying 30" E of center in the dark =
lane is a threshold magnitude star (This will prove to be very difficult - =
Roger Ivester).
M-66: Dimensions - 8'.7 x 4'.4 - mag. 9.0. Messier 66 is a large=2C lenti=
cular object in 6 cm=2C located at the SE end of a crooked string of three =
mag. 9 stars. The surface is irregularly concentrated and without a promin=
ent nucleus. 15 cm shows a large bright object with a bright concentrated =
core. (The chain of stars are easy in my 4-inch refractor - Roger Ivester)=
. In 30 cm the NE side is particularly mottled. The core which brightens =
evenly to a non-stellar nucleus is chopped-off on its NE and SW sides by da=
rk blotches (Difficult - Roger Ivester).
NGC-3628: Dimensions - 15' x 3'.6 - mag. 9.4. This long galaxy is bright =
in 25 cm. The halo extends to 10' x 1'=2C elongated E-W=3B it extends more=
W than E from the center (Can easily see on my sketch using my 10-inch ref=
lector - Roger Ivester). In 30 cm the elongated core is crowded against th=
e N flank of the halo and contains a faint nucleus.
=20
More information about the Lvas
mailing list