2019-02-01_Australian_SkyTelescope(1).pdf

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INTRODUCING THE ALL NEW
CGX-L
GERMAN EQUATORIAL MOUNT
+
TRIPOD
EXTRA LARGE
34 KG
CA PA C IT Y
PLUS PORTABILITY
EXCEPTIONAL LOAD TO WEIGHT RATIO
CGX-L
takes portable, observatory class mounts
to the next level with the innovative and
ergonomic designs of 2016’s CGX mount,
PLUS added features to handle heavy duty
observing and imaging kits with ease.
+
Longer dovetail saddle
+
Added autoguider and AUX
ports on the Dec axis for
smoother operation and
cable management
+
Integrated handles for easy
transport and portability
+
Larger 144 mm diameter
worm wheels to handle
heavier loads and improve
tracking accuracy in R.A.
INCLUDES:
Celestron’s all new PWI telescope
control software developed in
collaboration with PlaneWave Instruments
+
Improved ergonomics
with smoother polar
align adjustments
+
Heavy duty stainless steel
counterweight shaft
+
All new NexStar+ USB
hand control
COMPATIBLE WITH:
Celestron’s most innovative accessories including
StarSense AutoAlign, SkyPortal WiFi module, and
PowerTank Lithium
+
Massive 2.75” tripod legs
+
Larger accessory tray
that stays installed with
tripod collapsed
CELESTRON AUSTRALIAN RETAILERS:
Australian Geographic – 1300 746 724 – shop.australiangeographic.com.au
Bintel – 02 9518 7255 – bintel.com.au
Optics Central – 1300 884 763 – opticscentral.com.au
Sirius Optics – 07 3423 2355 – sirius-optics.com.au
EXPLORE ALL OF CGX-
L
AT
SPACE MISSIONS
Explorers of
the Solar System in 2019
P26
IMAGING
Bringing out the
best in your nebula images
P60
THE HORSEHEAD
How to
spot this famous object
P56
NEAREST STARS
Census of our
stellar neighbours
P18
THE ESSENTIAL MAGAZINE OF ASTRONOMY
What
came
before
the
Big Bang?
P28
TEST REPORT
Sky-Watcher
AZ-GTi &
Evostar 72
combo
COSMIC RIPPLES
Using pulsars to spot
spacetime waves
P12
FEB/MAR 2019
ISSUE 115
$9.90
NZ $9.50 INC GST
SKY-WATCHER MAKES HISTORY:
FOR THE FIRST TIME EVER, AUSTRALIA HAS A
130MM COMPUTERISED WIFI GOTO TELESCOPE FOR
UNDER $700!
THE AZGTe RANGE
80 Mak
102 Mak
127 Mak
SW130P-AZGTE
$699
Aperture/Focal Length
Optical Coatings
Accessories
Mount Type
Controller
Alignment
Wifi
PC Connection
DSLR Camera control
130mm (5.1”) / 650mm (F5)
Aluminum with SiO2 overcoat
25mm and 10mm Plossl eyepieces,
red dot finderscope
GOTO Alt-Az mount
iOS (iPhone/iPad) and Android app support,
PC via built in Wifi
Two star
Yes
Yes
Yes
WIFI CONTROL
CONTROL YOUR TELESCOPE WITH
EASE THE
FREE
SKY-WATCHER APP!
YEAR
WARRANTY
www.skywatcheraustralia.com.au
STOP DREAMING, START DOING
LX90
The Legend
THE PATENTED MEADE ADVANCED COMA-FREE (ACF) OPTICAL DESIGN OFFERS THE COMA-FREE
PINPOINT STAR IMAGES AND FLATTER IMAGE FIELDS GREATLY DESIRED BY DISCERNING AMATEUR
ASTRONOMERS, ASTROPHOTOGRAPHERS AND PROFESSIONAL OBSERVATORIES ALIKE.
10” LX90-ACF
FEATURES
10” (254mm) Catadioptric OTA
2500mm Focal Length, f/10 Focal Ratio
Advanced Coma Free/UHTC Optical Systems
Motorised Dual-Tine Alt-Az Fork Mount
AudioStar GoTo Computer Hand Controller
30,000+Object Database with Guided Tours
Astronomer Inside Multimedia System
26mm Eyepiece, 90° Diagonal
8x50 Finderscope with Crosshair Reticle
Adjustable-Height Stainless Steel Tripod
PLUS
®
AUDIOSTAR
Once aligned with the sky the AudioStar
®
is ready to take you to any object in the
over 30,000 object database.
In addition to
GOTO and tracking capability the AudioStar
permits a wide array of fascinating and
educational functions such as multiple Guided
Tours, digital positional readouts and the
ability to link with a PC.
Also available in:
8” LX90-ACF & 12” LX90-ACF
FIND YOUR LOCAL STOCKIST
February | March 2019
ISSUE 115, VOL. 15 NO. 2
Contents
REGULARS
5
6
Spectrum
News notes
P
.12
Spotting spacetime
ripples passing through
11 Discoveries
25 AS&T bookshop
FEATURES
12 Pulsar timing arrays
Astronomers are monitoring dozens
of ‘cosmic timepieces’ for telltale
signs of spacetime ripples passing
through.
By Robert Naeye
18 Meet the neighbours
Astronomers are compiling a census
of the nearest stars to discover what
we do and don’t know about our
stellar neighbours.
By Keith Cooper
26 Space missions in 2019
We present a full rundown of all the
major space missions active or about
to be launched in 2019.
OBSERVING & EXPLORING
42 Binocular highlight
The space between star clusters
By Mathew Wedel
Tips for seeing the
Horsehead Nebula
28 What came before the Big
Bang?
Cosmologists are tackling a once out-
of-the-question idea using out-of-
the-box thinking.
By Faye Flam
44 Under the stars
Meet Canopus, second brightest star
By Fred Schaaf
P
.56
46 Sun, Moon and planets
Venus, Saturn meet in the morning
By Jonathan Nally
50 Celestial calendar
RS Puppis — echoes from a strange star
By S.N. Johnson-Roehr
36 The world’s first female
professional astronomer
Who was the first woman paid to
study the stars? Was it the famous
Caroline Herschel or the obscure
Christine Kirch?
By Gabriella Bernardi
47 Meteors
Catch the Alpha Centaurids show
By Con Stoitsis
51 Targets
Hop into Lepus, the bunny constellation
By Sue French
48 Comets
The mysteries of the sungrazers
By David Seargent
54 Exploring the Solar System
Looking back at Mars and its dust storm
By Sean Walker
40 Space agency finds a home
Australia’s new space agency will be
based in Adelaide.
By Jonathan Nally
4
49 Variable stars
The ‘dog star’ and the dwarf
By Alan Plummer
56 Going deep
We show you how to see the Horsehead
By Howard Banich
AUSTRALIAN SKY & TELESCOPE
February | March 2019

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