Sky and Telescope - November 2017 - 13


	


	


	

#"# 
#
#
#
 

##
#	#

"##
#
#
!


##
##
#
"


#
##

##	
#	#	
## 	#	"# 
#
#
##

##

##
##
##

#
##
##	
##	#
#	##
##
	###
#
##
#
## 
#
#
 
####
 ##
##"###

##
#
	#
*+>K:%#;% ?%>K?*%K&%%1K6&K6">%;E+5)K+5K?*%K
&,%1$K@*:6D)*K KE%;HK1 ;)%K@%1%>#68%K651HK
D>+5)K4D#*K46;%K46$%>?K%9D+84%5@K6DK
>@ HK#655%#?%$K@6K@*%K5,)*?K>0IKF ?#*,5)K
> ?%11+@%>K$;+&AK #:6>>KH6D:K'+%1$K6&KE+%FK
F*+1%KE+%F+5)K6"/%#?>K8;%E+6D>1HK6D@K6&K
;% #*K@6K 31K"D?K?*%K46>?K86F%:&D1K
%H%8,%#%>K 5$K?*%K1 :)%>?K 8%;@D;%>K
%%K?*%K& +5?K#655%#B5)K&,1 4%5?>K+5K2K
F*+1%K81 55+5)KH6D;K5%G?K46E%K+5KH6D;K
>@ ;K @1 >K%%K"60K)36"D1%>K+5K@*%K%1,# 5K
%"D3 K >KH6DK$6$)%K?*%K#36D$>K+E%K
$%%8K+5@6K@*%K>K6&K5$;64%$ K 5$K
$6K,?K 11K+5K#616D<K
1@*6D)*K6D;K%H%>K :%5?K>%5>+BE%K%56D)*K
?6K>%%K?*%KD5+E%;>%K+5K#616D:K?*%K5&+5,?HK
+>K +5?K);%HK'DJJ+%>K"%#64%K$%? +1%$K
;% >K6&K#616D;'D3K5%"D16>,?IK 116F,5)KH6DK
?6K)6K"%H65$K@*%K3+4+@>K6&K6D;KE+>+65K
D@K6D;K6F5KE,>,65K+>5?K6D:K653HK
1,4,? ?-65K,)*?K8631D@.65K+>K K);6F+5)K
8;6"3%4K'7:K 31K6&KD>KF+?*K" #0H ;$K
6">%;E,5)K"%#64+5)K,5#;% >,5)1HK$,&(+#D1@K
+5K4 5HK83 #%>K*%K5&,5+@HK*%38>KH6DK#D@K

@*:6D)*K?*%K8613DB65K@6K":+5)K6">%;E+5)K
" #0K@6K6D:KD;" 5K ;% >K
?K 3>6K*%38>KH6DK>* ;%K?*%K";% @*? 0,5)K
@*,5)>KF%K>%%K 5$K$+>#6E%;K >K
>?:6564%;>KHK#DC5)K@*%K9D%D%K?6K?*%K
%H%8+%#%K@*%K5&+5+?HK 316F>K%E%;H65%K?6K
%G816;%K?*%K5,)*?K>0HK56@K/D>@K?6)%@*%;K
"D?K ?K@*%K> 4%KB4%K6DK# 5K$,>#D>>K
$%? ,1>K 5$K 564 3+%>K >KH6DK>%%K@*%4K
5$K;%46E%K?*%K5%%$K&7;K>8%#+ 1K>0+31>K,5K
E%;@%$KE+>+65K
*+>K4 0%>K,?K?*%K8%;'%#@K?663K'6;K8D"1,#K
6D@:% #*K >KF%31K >K6">%;E+5)KF+@*K
'!4+3HK 5$K';+%5$>KD@K?*%K5&,5+@HK
$6%>5?K/D>?K8;6E+$%KH6DKF+?*K,5#;%$+"1%K
1+E%KE+%F>K?K 1>6K 136F>KH6DK@6K> E%K
>+5)1%K+4 )%>K 5$K%E%5KF*61%K>%>>,65>K
@6K>* ;%K1 ?%=K6DK# 5K%E%5K":6 $# >?K
H6D;K>%>>,65K3+E%K651,5%K?6K K)16" 3K
D$,%5#%K;,)*?K&;64K,5>,$%K6D;K>6&AF ;%K
D?K>D;%3HK>64%?*+5)K@*,>K $E 5#%$K
+5E61E%>K $$+@.65 3K>8%#+ 1+>@K%9D,84%5@K
5$K#6481%GK>6&AF :%
K* @>K@*%K"%>?K
",?K*%K5'+5,?HK+>K$%>,)5%$K@6KF6;0K&:64K

!&&&#
&&&&%&&
&&"&&&&#&"&&

K'7# 1K1%5)@*K6&K ;6D5$K		44K:+)*@K
?*;6D)*K?6K
		44K@KF6:0>KF+@*K 1? JK
&6;046D5?%$K?%1%>#68%>K >KF%11K >K
%9D ?6;, 1K46D5@>K>K365)K >KH6DK# 5K
?; #0K K>? :K&6;K K'%FK>%#65$>K+@KF+31KF6:0K
F+@*K 5K5&+5+@IKF+@*6D@K?*%K5%%$K'6:K
#6481+# @%$K)D+$+5)K>H>@%4>K
*%K# 4%; K+?>%3&KD>%>K@*%K1 ?%>?K,5KK
?%#*5616)HK?6K8;6E,$%K+5#:%$+"3%K
>%5>,BE+@HK ?KE%;HK16FK56,>%K 5$K+@>K 31K
#65?;613%$K?*;6D)*K6D:K#D>@64K"D,1@K
>6&AF :%K6DKF 5?K@6K>8%5$KH6D;KB4%K
%G836;,5)K@*%KD5,E%:>%K56?K1% :5+5)K6D:K
8;6): 4K>6KF%E%K0%8@K+@K >K>+481%K 5$K
+5?D+BE%K >K86>>+"1%KF*,1%K>B13K)+E,5)KH6DK
?*%K86F%;K 5$K#65?;61KH6DK5%%$K?6K$%1E%K
$%%8K+5?6K?*%K5+)*@K>0HK

	 & &$&
&







 	





http://www.atik-cameras.com

Sky and Telescope - November 2017

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

Contents
Sky and Telescope - November 2017 - Cover1
Sky and Telescope - November 2017 - Cover2
Sky and Telescope - November 2017 - 1
Sky and Telescope - November 2017 - Contents
Sky and Telescope - November 2017 - 3
Sky and Telescope - November 2017 - 4
Sky and Telescope - November 2017 - 5
Sky and Telescope - November 2017 - 6
Sky and Telescope - November 2017 - 7
Sky and Telescope - November 2017 - 8
Sky and Telescope - November 2017 - 9
Sky and Telescope - November 2017 - 10
Sky and Telescope - November 2017 - 11
Sky and Telescope - November 2017 - 12
Sky and Telescope - November 2017 - 13
Sky and Telescope - November 2017 - 14
Sky and Telescope - November 2017 - 15
Sky and Telescope - November 2017 - 16
Sky and Telescope - November 2017 - 17
Sky and Telescope - November 2017 - 18
Sky and Telescope - November 2017 - 19
Sky and Telescope - November 2017 - 20
Sky and Telescope - November 2017 - 21
Sky and Telescope - November 2017 - 22
Sky and Telescope - November 2017 - 23
Sky and Telescope - November 2017 - 24
Sky and Telescope - November 2017 - 25
Sky and Telescope - November 2017 - 26
Sky and Telescope - November 2017 - 27
Sky and Telescope - November 2017 - 28
Sky and Telescope - November 2017 - 29
Sky and Telescope - November 2017 - 30
Sky and Telescope - November 2017 - 31
Sky and Telescope - November 2017 - 32
Sky and Telescope - November 2017 - 33
Sky and Telescope - November 2017 - 34
Sky and Telescope - November 2017 - 35
Sky and Telescope - November 2017 - 36
Sky and Telescope - November 2017 - 37
Sky and Telescope - November 2017 - 38
Sky and Telescope - November 2017 - 39
Sky and Telescope - November 2017 - 40
Sky and Telescope - November 2017 - 41
Sky and Telescope - November 2017 - 42
Sky and Telescope - November 2017 - 43
Sky and Telescope - November 2017 - 44
Sky and Telescope - November 2017 - 45
Sky and Telescope - November 2017 - 46
Sky and Telescope - November 2017 - 47
Sky and Telescope - November 2017 - 48
Sky and Telescope - November 2017 - 49
Sky and Telescope - November 2017 - 50
Sky and Telescope - November 2017 - 51
Sky and Telescope - November 2017 - 52
Sky and Telescope - November 2017 - 53
Sky and Telescope - November 2017 - 54
Sky and Telescope - November 2017 - 55
Sky and Telescope - November 2017 - 56
Sky and Telescope - November 2017 - 57
Sky and Telescope - November 2017 - 58
Sky and Telescope - November 2017 - 59
Sky and Telescope - November 2017 - 60
Sky and Telescope - November 2017 - 61
Sky and Telescope - November 2017 - 62
Sky and Telescope - November 2017 - 63
Sky and Telescope - November 2017 - 64
Sky and Telescope - November 2017 - 65
Sky and Telescope - November 2017 - 66
Sky and Telescope - November 2017 - 67
Sky and Telescope - November 2017 - 68
Sky and Telescope - November 2017 - 69
Sky and Telescope - November 2017 - 70
Sky and Telescope - November 2017 - 71
Sky and Telescope - November 2017 - 72
Sky and Telescope - November 2017 - 73
Sky and Telescope - November 2017 - 74
Sky and Telescope - November 2017 - 75
Sky and Telescope - November 2017 - 76
Sky and Telescope - November 2017 - 77
Sky and Telescope - November 2017 - 78
Sky and Telescope - November 2017 - 79
Sky and Telescope - November 2017 - 80
Sky and Telescope - November 2017 - 81
Sky and Telescope - November 2017 - 82
Sky and Telescope - November 2017 - 83
Sky and Telescope - November 2017 - 84
Sky and Telescope - November 2017 - Cover3
Sky and Telescope - November 2017 - Cover4
https://www.nxtbook.com/nxtbooks/aas/st_202501
https://www.nxtbook.com/nxtbooks/aas/st_202412
https://www.nxtbook.com/nxtbooks/aas/st_202411
https://www.nxtbook.com/nxtbooks/aas/st_202410
https://www.nxtbook.com/nxtbooks/aas/st_202409
https://www.nxtbook.com/nxtbooks/aas/st_202408
https://www.nxtbook.com/nxtbooks/aas/st_202407
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