Sky and Telescope - January 2017 - 39

25
25

26

ZWO ATMOSPHERIC
DISPERSION CORRECTOR
ZWO zwoptical.com

Atmospheric dispersion smears our view of astronomical
objects due to different wavelengths of light being bent by
different amounts as they pass through our atmosphere.
The effect is more pronounced for objects low in the sky
as many northern observers know all too well from viewing
Mars and Saturn last summer. Atmospheric dispersion correctors (ADC for short) based on a pair of adjustable prisms
are widely used by planetary observers, but this new model
from ZWO costs a fraction of ADCs available in the past.
And a deal like that makes it a Hot Product in our eyes.
* U.S. price: $128

26

TELE VUE FONEMATE
Tele Vue Optics televue.com

Google "telescope smartphone adapter" and you'll likely be
overwhelmed by the variety of models on the market today.
But the FoneMate from Tele Vue stood out for two reasons.
First, there's the easy way a smartphone (with or without a
protective case) is properly positioned and held in place on
the adapter. And second is how easily the assembly connects to any Dioptrx-compatible Tele Vue eyepiece (check
the website for a list) already on the telescope, making it extremely simple to photograph what you've been observing.
* U.S. price: $95

27

27

28

IOPTRON SKYTRACKER PRO
iOptron ioptron.com

The SkyTracker Pro from iOptron may be small enough to
fit in the palm of your hand, but it's packed full of features
and ready to mount on any solid photo tripod. The removable base has fine altitude and azimuth adjustments for
achieving precise polar alignment using the polar finder
scope and a smartphone app. An internal rechargeable
battery offers up to 24 hours of continuous operation at
solar, lunar, sidereal, or half-sidereal tracking rates, with
the last one of special value to nightscape photographers
shooting starry vistas above terrestrial scenes.
* U.S. price: $399

28

VIXEN HR PLANETARY EYEPIECES
Vixen Optics vixenoptics.com

Planetary observers will be especially interested in these
new eyepieces from Vixen. Their exceptionally short focal
lengths of 2.6-, 2.0-, and 1.6-mm produce high magnifications with relatively short-focal-length telescopes. With only
5 lens elements arranged in 3 groups, optical coatings providing more than 99% transmission at each lens surface,
and mechanical construction optimized to reduce scattered
light, these eyepieces deliver superb image contrast and
resolution. Each model has 10 mm of eye relief and a 42°
apparent field of view.
* U.S. price: $279 each

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

* JANUARY 2017

39


http://www.zwoptical.com http://www.televue.com http://www.ioptron.com http://www.vixenoptics.com 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_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/newtrack/st_201612
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