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



http://www.skyandtelescope.com

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
Sky and Telescope - January 2017 - 34
Sky and Telescope - January 2017 - 35
Sky and Telescope - January 2017 - 36
Sky and Telescope - January 2017 - 37
Sky and Telescope - January 2017 - 38
Sky and Telescope - January 2017 - 39
Sky and Telescope - January 2017 - 40
Sky and Telescope - January 2017 - 41
Sky and Telescope - January 2017 - 42
Sky and Telescope - January 2017 - 43
Sky and Telescope - January 2017 - 44
Sky and Telescope - January 2017 - 45
Sky and Telescope - January 2017 - 46
Sky and Telescope - January 2017 - 47
Sky and Telescope - January 2017 - 48
Sky and Telescope - January 2017 - 49
Sky and Telescope - January 2017 - 50
Sky and Telescope - January 2017 - 51
Sky and Telescope - January 2017 - 52
Sky and Telescope - January 2017 - 53
Sky and Telescope - January 2017 - 54
Sky and Telescope - January 2017 - 55
Sky and Telescope - January 2017 - 56
Sky and Telescope - January 2017 - 57
Sky and Telescope - January 2017 - 58
Sky and Telescope - January 2017 - 59
Sky and Telescope - January 2017 - 60
Sky and Telescope - January 2017 - 61
Sky and Telescope - January 2017 - 62
Sky and Telescope - January 2017 - 63
Sky and Telescope - January 2017 - 64
Sky and Telescope - January 2017 - 65
Sky and Telescope - January 2017 - 66
Sky and Telescope - January 2017 - 67
Sky and Telescope - January 2017 - 68
Sky and Telescope - January 2017 - 69
Sky and Telescope - January 2017 - 70
Sky and Telescope - January 2017 - 71
Sky and Telescope - January 2017 - 72
Sky and Telescope - January 2017 - 73
Sky and Telescope - January 2017 - 74
Sky and Telescope - January 2017 - 75
Sky and Telescope - January 2017 - 76
Sky and Telescope - January 2017 - 77
Sky and Telescope - January 2017 - 78
Sky and Telescope - January 2017 - 79
Sky and Telescope - January 2017 - 80
Sky and Telescope - January 2017 - 81
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
https://www.nxtbook.com/nxtbooks/aas/st_202406
https://www.nxtbook.com/nxtbooks/aas/st_202405
https://www.nxtbook.com/nxtbooks/aas/st_202404_qr
https://www.nxtbook.com/nxtbooks/aas/st_202404
https://www.nxtbook.com/nxtbooks/aas/st_202403
https://www.nxtbook.com/nxtbooks/aas/st_202402
https://www.nxtbook.com/nxtbooks/aas/st_202401_aus
https://www.nxtbook.com/nxtbooks/aas/st_202401
https://www.nxtbook.com/nxtbooks/aas/st_202312_aus
https://www.nxtbook.com/nxtbooks/aas/st_202312
https://www.nxtbook.com/nxtbooks/aas/st_202311
https://www.nxtbook.com/nxtbooks/aas/st_202310
https://www.nxtbook.com/nxtbooks/aas/st_202309
https://www.nxtbook.com/nxtbooks/aas/st_202308
https://www.nxtbook.com/nxtbooks/aas/st_202307
https://www.nxtbook.com/nxtbooks/aas/st_202306
https://www.nxtbook.com/nxtbooks/aas/st_202305
https://www.nxtbook.com/nxtbooks/aas/st_202304
https://www.nxtbook.com/nxtbooks/aas/st_202304_qr
https://www.nxtbook.com/nxtbooks/aas/st_202303
https://www.nxtbook.com/nxtbooks/aas/st_202302
https://www.nxtbook.com/nxtbooks/aas/st_202301
https://www.nxtbook.com/nxtbooks/aas/st_202212
https://www.nxtbook.com/nxtbooks/aas/st_202211
https://www.nxtbook.com/nxtbooks/aas/st_202210
https://www.nxtbook.com/nxtbooks/aas/st_202209
https://www.nxtbook.com/nxtbooks/aas/st_202208
https://www.nxtbook.com/nxtbooks/aas/st_202207
https://www.nxtbook.com/nxtbooks/aas/st_202206
https://www.nxtbook.com/nxtbooks/aas/st_202205
https://www.nxtbook.com/nxtbooks/aas/st_202204
https://www.nxtbook.com/nxtbooks/aas/st_202203
https://www.nxtbook.com/nxtbooks/aas/st_202202
https://www.nxtbook.com/nxtbooks/aas/st_202201
https://www.nxtbook.com/nxtbooks/aas/st_202112
https://www.nxtbook.com/nxtbooks/aas/st_202111
https://www.nxtbook.com/nxtbooks/aas/st_202110
https://www.nxtbook.com/nxtbooks/aas/st_202109
https://www.nxtbook.com/nxtbooks/aas/st_202108
https://www.nxtbook.com/nxtbooks/aas/st_202107
https://www.nxtbook.com/nxtbooks/aas/st_202106
https://www.nxtbook.com/nxtbooks/aas/st_202105
https://www.nxtbook.com/nxtbooks/aas/st_202104
https://www.nxtbook.com/nxtbooks/aas/st_202103
https://www.nxtbook.com/nxtbooks/aas/st_202102
https://www.nxtbook.com/nxtbooks/aas/st_202101
https://www.nxtbook.com/nxtbooks/aas/skywatch_2021
https://www.nxtbook.com/nxtbooks/aas/st_202012
https://www.nxtbook.com/nxtbooks/aas/st_202011
https://www.nxtbook.com/nxtbooks/aas/st_202010
https://www.nxtbook.com/nxtbooks/aas/st_202009
https://www.nxtbook.com/nxtbooks/aas/st_202008
https://www.nxtbook.com/nxtbooks/aas/st_202007
https://www.nxtbook.com/nxtbooks/aas/st_202006
https://www.nxtbook.com/nxtbooks/aas/st_202005
https://www.nxtbook.com/nxtbooks/aas/st_202004
https://www.nxtbook.com/nxtbooks/aas/st_202003
https://www.nxtbook.com/nxtbooks/aas/st_202002
https://www.nxtbook.com/nxtbooks/aas/st_202001
https://www.nxtbook.com/nxtbooks/aas/st_201912
https://www.nxtbook.com/nxtbooks/aas/st_201911
https://www.nxtbook.com/nxtbooks/aas/st_201910
https://www.nxtbook.com/nxtbooks/aas/st_201909
https://www.nxtbook.com/nxtbooks/aas/st_201908
https://www.nxtbook.com/nxtbooks/aas/st_201907
https://www.nxtbook.com/nxtbooks/aas/st_201906
https://www.nxtbook.com/nxtbooks/aas/st_201905
https://www.nxtbook.com/nxtbooks/aas/st_201904
https://www.nxtbook.com/nxtbooks/aas/st_201903
https://www.nxtbook.com/nxtbooks/aas/st_201902
https://www.nxtbook.com/nxtbooks/aas/st_201901
https://www.nxtbook.com/nxtbooks/aas/st_201812
https://www.nxtbook.com/nxtbooks/aas/st_201811
https://www.nxtbook.com/nxtbooks/aas/st_201810
https://www.nxtbook.com/nxtbooks/aas/st_201809
https://www.nxtbook.com/nxtbooks/aas/st_201808
https://www.nxtbook.com/nxtbooks/aas/st_201807
https://www.nxtbook.com/nxtbooks/aas/st_201806
https://www.nxtbook.com/nxtbooks/aas/st_201805
https://www.nxtbook.com/nxtbooks/aas/st_201804
https://www.nxtbook.com/nxtbooks/aas/st_201803
https://www.nxtbook.com/nxtbooks/aas/st_201802
https://www.nxtbook.com/nxtbooks/aas/st_201801
https://www.nxtbook.com/nxtbooks/aas/st_201712
https://www.nxtbook.com/nxtbooks/aas/st_201711
https://www.nxtbook.com/nxtbooks/aas/st_201710
https://www.nxtbook.com/nxtbooks/aas/st_201709
https://www.nxtbook.com/nxtbooks/aas/st_201708
https://www.nxtbook.com/nxtbooks/aas/st_201707
https://www.nxtbook.com/nxtbooks/aas/st_201706
https://www.nxtbook.com/nxtbooks/aas/st_201705
https://www.nxtbook.com/nxtbooks/aas/st_201704
https://www.nxtbook.com/nxtbooks/aas/st_201703
https://www.nxtbook.com/nxtbooks/aas/st_201702
https://www.nxtbook.com/nxtbooks/aas/st_201701
https://www.nxtbook.com/nxtbooks/aas/st_201612
https://www.nxtbook.com/nxtbooks/aas/st_201611
https://www.nxtbook.com/nxtbooks/aas/st_201610
https://www.nxtbook.com/nxtbooks/aas/st_201609
https://www.nxtbook.com/nxtbooks/aas/st_201608
https://www.nxtbook.com/nxtbooks/aas/st_201607
https://www.nxtbook.com/nxtbooks/aas/st_201606
https://www.nxtbook.com/nxtbooks/aas/st_201605
https://www.nxtbook.com/nxtbooks/aas/st_201604
https://www.nxtbook.com/nxtbooks/aas/st_201603
https://www.nxtbook.com/nxtbooks/aas/st_201602
https://www.nxtbook.com/nxtbooks/aas/st_201601
https://www.nxtbook.com/nxtbooks/aas/st_201512
https://www.nxtbook.com/nxtbooks/aas/st_201511
https://www.nxtbook.com/nxtbooks/aas/st_201510
https://www.nxtbook.com/nxtbooks/aas/st_201509
https://www.nxtbook.com/nxtbooks/aas/st_201508
https://www.nxtbook.com/nxtbooks/aas/st_201507
https://www.nxtbook.com/nxtbooks/aas/st_201506
https://www.nxtbook.com/nxtbooks/aas/st_201505
https://www.nxtbook.com/nxtbooks/aas/st_201504
https://www.nxtbook.com/nxtbooks/aas/st_201503
https://www.nxtbook.com/nxtbooks/aas/st_201502
https://www.nxtbook.com/nxtbooks/aas/st_201501
https://www.nxtbook.com/nxtbooks/aas/st_201412
https://www.nxtbook.com/nxtbooks/aas/st_201411
https://www.nxtbook.com/nxtbooks/aas/st_201410
https://www.nxtbook.com/nxtbooks/aas/st_201409
https://www.nxtbook.com/nxtbooks/aas/st_201408
https://www.nxtbook.com/nxtbooks/aas/st_201407
https://www.nxtbook.com/nxtbooks/aas/st_201406
https://www.nxtbook.com/nxtbooks/aas/st_mars
https://www.nxtbook.com/nxtbooks/aas/st_201405
https://www.nxtbook.com/nxtbooks/aas/st_201404
https://www.nxtbook.com/nxtbooks/aas/st_201403
https://www.nxtbook.com/nxtbooks/aas/st_201402
https://www.nxtbook.com/nxtbooks/aas/st_201401
https://www.nxtbook.com/nxtbooks/aas/st_201312
https://www.nxtbook.com/nxtbooks/aas/st_201311
https://www.nxtbook.com/nxtbooks/aas/st_201310
https://www.nxtbook.com/nxtbooks/aas/st_201309
https://www.nxtbook.com/nxtbooks/aas/st_201308
https://www.nxtbook.com/nxtbooks/aas/st_201307
https://www.nxtbook.com/nxtbooks/aas/st_201306
https://www.nxtbook.com/nxtbooks/aas/st_201305
https://www.nxtbook.com/nxtbooks/aas/st_201304
https://www.nxtbook.com/nxtbooks/aas/st_201303
https://www.nxtbook.com/nxtbooks/aas/st_201302
https://www.nxtbook.com/nxtbooks/aas/st_201301
https://www.nxtbook.com/nxtbooks/aas/st_201212
https://www.nxtbook.com/nxtbooks/aas/st_201211
https://www.nxtbook.com/nxtbooks/aas/st_201210
https://www.nxtbook.com/nxtbooks/aas/st_201209
https://www.nxtbook.com/nxtbooks/aas/st_201208
https://www.nxtbook.com/nxtbooks/aas/st_201207
https://www.nxtbook.com/nxtbooks/aas/st_201206
https://www.nxtbook.com/nxtbooks/aas/st_201205
https://www.nxtbook.com/nxtbooks/aas/st_201204
https://www.nxtbook.com/nxtbooks/aas/st_201203
https://www.nxtbook.com/nxtbooks/aas/st_201202
https://www.nxtbook.com/nxtbooks/aas/st_201201
https://www.nxtbook.com/nxtbooks/aas/st_201112
https://www.nxtbook.com/nxtbooks/aas/st_201111
https://www.nxtbook.com/nxtbooks/aas/st_201110
https://www.nxtbook.com/nxtbooks/aas/st_201109
https://www.nxtbook.com/nxtbooks/aas/st_201108
https://www.nxtbook.com/nxtbooks/aas/st_201107
https://www.nxtbook.com/nxtbooks/aas/st_201106
https://www.nxtbook.com/nxtbooks/aas/st_201105
https://www.nxtbook.com/nxtbooks/aas/st_201104
https://www.nxtbook.com/nxtbooks/aas/st_201103
https://www.nxtbook.com/nxtbooks/aas/st_201102
https://www.nxtbook.com/nxtbooks/aas/st_201101
https://www.nxtbook.com/nxtbooks/aas/st_201012
https://www.nxtbook.com/nxtbooks/aas/st_201011
https://www.nxtbook.com/nxtbooks/aas/st_201010
https://www.nxtbook.com/nxtbooks/aas/st_201009
https://www.nxtbook.com/nxtbooks/aas/st_201008
https://www.nxtbook.com/nxtbooks/aas/st_201007
https://www.nxtbook.com/nxtbooks/aas/st_201006
https://www.nxtbook.com/nxtbooks/aas/st_201005
https://www.nxtbook.com/nxtbooks/aas/st_201004
https://www.nxtbook.com/nxtbooks/aas/st_201003
https://www.nxtbook.com/nxtbooks/aas/st_201002
https://www.nxtbook.com/nxtbooks/aas/st_201001
https://www.nxtbookmedia.com