Sky and Telescope - January 2017 - 55

u The galaxy NGC 1300 sports a prominent
bar at its center, out of which extend its spiral
arms. Look for the bright core cloaked in an
east-southeast slanting halo in your telescope's eyepiece.

bars. It's thought that gas flows inward
along the bar and then whirls into the
galaxy's center.
NGC 1300's structure is considerably more subtle when viewed through
a telescope. Look for the galaxy 2.3°
north of Tau4 (τ4) Eridani, accompanied
by NGC 1297 just 20′ to its northnorthwest. Through the 130-mm scope
at 30×, NGC 1297 presents only a
small, dim spot, whereas NGC 1300 is
an appreciably larger, bright, oval glow.
A magnification of 74× plucks out a
faint star at the northern edge of NGC
1297, and NGC 1300's halo leans eastsoutheast and mantles a small, bright
core. On a particularly nice night at the
Peach State Star Gaze in Georgia, I was
able to spot NGC 1300's bar at 117×.
The 10-inch scope at 118× begins to
show the true nature of NGC 1300. The
3h 20m

3h 15m

galaxy's core is lens-shaped and holds a
brighter point at its center. Arms unfurl
counter-clockwise from the ends of
the 3′-long bar. They start out relatively
bright but then quickly fade. The western
arm curves around to the north, fading
into the general glow just before it would
pass above the near end of the galactic
core. The opposed arm is even shorter.
NGC 1297 is slightly oval north-south,
a bit more than 1′ tall, and intensifies
toward the center.

3h 10m

3h 05m

3h 00m

1297

Climbing 2.6° west-northwest from
Tau4 takes us to the lovely spiral galaxy
NGC 1232 and its dwarf satellite NGC
1232A. Although they are not currently
interacting, past encounters may be
responsible for the odd bends in the
larger galaxy's spiral arms.
NGC 1232 is easily noticed in my
130-mm refractor at 23×. It proffers a
sizable round glow with a tiny, slightly
brighter core nestled in its center. At
102× the halo looks very patchy and
spans about 5′. Viewed with the 10-inch
scope at 220×, the galaxy's unevenly
bright countenance indicates spiral arms
unfolding counter-clockwise. A faint star
anchors the northeastern edge of the

1300

ERIDANUS

4h 20m

-20°

1232A

1232

ERIDANUS
1537

o4
-22°

4
Star magnitudes

Star magnitudes

4
5
6
7
8
9
10

4h 10m
-30°

1325
N ASA / ESA / HUBBLE HERITAG E TE A M (STSCI / AUR A)

4h 15m

15

1187

o3

4

-32°

5
6
7
8
9
10

1531
1532

p4
-24°

-34°

s k y a n d t e l e s c o p e .c o m

* JANUARY 2017

55


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Sky and Telescope - January 2017

Table of Contents for the Digital Edition of Sky and Telescope - January 2017

Contents
Sky and Telescope - January 2017 - Cover1
Sky and Telescope - January 2017 - Cover2
Sky and Telescope - January 2017 - 1
Sky and Telescope - January 2017 - Contents
Sky and Telescope - January 2017 - 3
Sky and Telescope - January 2017 - 4
Sky and Telescope - January 2017 - 5
Sky and Telescope - January 2017 - 6
Sky and Telescope - January 2017 - 7
Sky and Telescope - January 2017 - 8
Sky and Telescope - January 2017 - 9
Sky and Telescope - January 2017 - 10
Sky and Telescope - January 2017 - 11
Sky and Telescope - January 2017 - 12
Sky and Telescope - January 2017 - 13
Sky and Telescope - January 2017 - 14
Sky and Telescope - January 2017 - 15
Sky and Telescope - January 2017 - 16
Sky and Telescope - January 2017 - 17
Sky and Telescope - January 2017 - 18
Sky and Telescope - January 2017 - 19
Sky and Telescope - January 2017 - 20
Sky and Telescope - January 2017 - 21
Sky and Telescope - January 2017 - 22
Sky and Telescope - January 2017 - 23
Sky and Telescope - January 2017 - 24
Sky and Telescope - January 2017 - 25
Sky and Telescope - January 2017 - 26
Sky and Telescope - January 2017 - 27
Sky and Telescope - January 2017 - 28
Sky and Telescope - January 2017 - 29
Sky and Telescope - January 2017 - 30
Sky and Telescope - January 2017 - 31
Sky and Telescope - January 2017 - 32
Sky and Telescope - January 2017 - 33
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Sky and Telescope - January 2017 - 36
Sky and Telescope - January 2017 - 37
Sky and Telescope - January 2017 - 38
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Sky and Telescope - January 2017 - 40
Sky and Telescope - January 2017 - 41
Sky and Telescope - January 2017 - 42
Sky and Telescope - January 2017 - 43
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Sky and Telescope - January 2017 - 45
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Sky and Telescope - January 2017 - 49
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Sky and Telescope - January 2017 - 55
Sky and Telescope - January 2017 - 56
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Sky and Telescope - January 2017 - 60
Sky and Telescope - January 2017 - 61
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Sky and Telescope - January 2017 - 82
Sky and Telescope - January 2017 - 83
Sky and Telescope - January 2017 - 84
Sky and Telescope - January 2017 - Cover3
Sky and Telescope - January 2017 - Cover4
Sky and Telescope - January 2017 - SGA17RAL
Sky and Telescope - January 2017 - 90
Sky and Telescope - January 2017 - SGA17R
Sky and Telescope - January 2017 - SGA17RA
Sky and Telescope - January 2017 - SGA17EAL
Sky and Telescope - January 2017 - 94
Sky and Telescope - January 2017 - SGA17E
Sky and Telescope - January 2017 - SGA17EA
Sky and Telescope - January 2017 - SGA17SAL
Sky and Telescope - January 2017 - 98
Sky and Telescope - January 2017 - SGA17S
Sky and Telescope - January 2017 - SGA17SA
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