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WILLIAM OPTICS USA
Crafting the Earth's Finest Astronomical Instruments
www.william-optics.com
William Optics Corp.
FluoroStar 110
INSTRUCTION MANUAL
CONTACT US
WILLIAM OPTICS USA
Toll Free: +1-866-918-6888 (For USA only)
Tel: +1-714-898-7989
Fax: +1-714-892-6067
web: www.william-optics.com
e-mail: [email protected]
Crafting the Earth's Finest Astronomical Instruments
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Thank you for choosing a William Optics FLUOROSTAR 110,
William Optics flagship refractor.
This simple step-by-step instruction manual is designed to provide
FLT-110 owners with a better understanding of how to operate
their new telescope by providing precise, updated information.
These instructions will also guide you through how to properly
maintain the FLT-110, and how to operate it at its maximum
capabilities.
Please carefully familiarize yourself with your telescope's parts
and functions before operating it for the first time.
WARNING!
DO NOT USE THIS TELESCOPE UNDER ANY
CIRCUMSTANCES TO DIRECTLY VIEW THE SUN.
It could easily cause instant blindness or serious damage to your
eyes. To view the sun, use only appropriately designed solar filters
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that will reject 99.96% of the sun light and heat. Educate your family
on how to use this telescope properly during day and night time
observations. For further information please contact your local dealer.
CONTENTS
Getting to know your telescope
FluoroStar Specifications
FluoroStar Color Correction Graph
FluoroStar Acessories Chart
Connection Instructions ( Mounting Rings )
Connection Instructions ( 2" Diagonal Mirror/ 2" 45 Erecting Prism )
Connection Instructions ( Erecting Finderscope )
Connection Instructions ( Aligning Finderscope )
Usage
Important Notice
Storage and Cleaning
Caution for Safety
01
02
03
04
05
06
07
08
09
10
10
11
Crafting the Earth's Finest Astronomical Instruments
Bundled Equipment
Optional Equipment
FLT-110 APO F/6.5 Features
Recommended for This Scope
11
12
13-14
15-20
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Getting to know your telescope
FluoroStar 110 Triplet APO Specifications
Dew shield cover
Retractable dew shield
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360 rotatable
focuser lock
Extend
main tube
tension adjustment
the focuser drawtube
Aperture
Focal Ratio
Focal Length
Objective Type
Resolving Power
Limiting Magnitude
Lens Shade
Focuser
1.25" Adapter
Tube Diameter
Tube Length
Tube Weight
Case
110 mm
F / 6.5
715 mm
3 elements oil-spaced
1.05"
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Retractable
4" 360 Rotating
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Camera-angle Adjuster
1.25" Adapter Included
Brass Compression Rings
115 mm
625 mm ( 24.6" ) Fully Retracted
6.1 kg ( 13.5 lbs. )
High Quality Aluminum Case
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360 rotatable
2" nosepiece lock
2" lock screw
1.25" adapter lock screw
2" to 1.25" adapter
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focuser knob
Case Dimensions
(WxHxD)
70 cm x 24 cm x 22 cm
( 28" x 9.1" x 8.9" )
Case Weight 4.5 kg
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Color Correction Graph
FluoroStar Accessories Chart
1.0
0,5
0,0 0,2 0,4
Color correction:
Corrected from 436mm to 100mm, color
image shift 0.025% of F.
Optimized for e-line (546mm), calculated
PV 1/15.
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In order to achieve the maximum color correction and ultra sharp images,
we have selected the best "SD" material to make our objective, designed by
TEC. The Fluoro-Star 110 lens is a 3 elements oil-space APO. This design
consists of a heart of super low dispersion glass surrounded by 2 elements
of crown glass.
436 mm
480 mm
546 mm
656 mm
800 mm
William Optics APO Triplet.
TEC design.
Light dia. 110 mm
Focal length 715 mm
Focal ratio 6.5
Aluminum case
115 mm
Mounting Rings
Finder Bracket
(For 50mm)
Bracket Adapter
EZTouch
FLT 110
Flattener
Photo Adapter
2" Diagonal
Mirror
2" 45
Erecting Prism
1.25" 45
Erecting Prism
(2" Barrel)
Camera
Adapter
6x30 Erecting
Finderscope
2" Eyepiece
1.25"
Adapter
Dovetail
Camera
Camera
7x50 Erecting
Finderscope
DCL
4337
DCL
Digital Camera
52
(Canon,CASIO,
SONY,OLYMPUS)
DCL
NIKON
28
Digital Camera
Digital
Video
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Our design reduces any secondary spectrum to an unbelievable degree.
The superb color correction allows for the use of extremely high magnification
without image breakdown, challenge subjects such as the Moon or Venus.
1.25" Eyepiece
Tripod
Equatorial Mount
1.25"
Adapter
1.25"
45
Erecting
Prism
Violet
Reducer
Filter(VR)
Above diagram is only for future connectivity purposes.
Please contact our Authorized Dealers for accessories purchase.
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Connection Instructions
( Mounting Rings )
Connection Instructions
( 2" Diagonal Mirror / Erecting Prism)
Step-1
Step-2
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Safely secure the 115mm mounting rings to the WO
dovetail.
Fully extend the dewshield cover before
placing the OTA in the rings.
Step-1
Step-2
Step-3
Loosen lock screw for release.
Remove 2" to 1.25" adapter.
Tighten lock screw.
Tighten lock screw.
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Step-3
Tighten lock screw.
Crafting the Earth's Finest Astronomical Instruments
Tighten lock screw.
Remember to insure that the mounting rings
knobs are tight before operations.
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Connection Instructions
( Finderscope )
Connection Instructions
( Aligning Finderscope )
Step-1
Extract the black plastic screw and
place the finder bracket on
FluoriteStar 110 focuser and attach
with lock screw.
connection point
for finderscope bracket
Step-2
Insert finderscope into
finder bracket.
Step-3
Insert illuminator.
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into finderscope.
Finder Bracket Lock Screw
Finder Bracket
Align the finderscope pointing at the same object as the telescope.
Unscrew the knob
of illuminator.
Remove the knob
from finderscope.
Step-1
Find a distant object in
the telescope with a low
power eyepiece.
Alignment Screws.
Step-2
Align the finderscope by
pointing at the same
object, then loosen or
tighten the alignment
screws.
Step-4
Tighten the knob
on finderscope.
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Adjust the alignment screws.
View Field of Finderscope.
(with WO Erecting Illuminated
Finderscope)
Step-3
Use a high power
eyepiece and repeat this
procedure.
View Field of Telescope.
(with WO Erecting Prism)
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Usage
The Fluorostar 110 is designed to work with both 1 1/4 inch and 2 inch diameter
eyepieces in various focal lengths, for both daytime and nighttime viewing. Because
the Fluorostar is well suited to viewing nebulae, clusters, large galaxies and comets,
we recommend the use of high quality wide angle eyepieces. The WO SWAN (72 )
and UWAN (82 ) series eyepieces are available in a variety of focal lengths. Viewing
the moon and planets is also impressive at magnifications of 120X when seeing
conditions permit.
This telescope is also well suited for higher power observations with planetary
eyepieces.
To calculate the magnification of your telescope and eyepiece combination, divide
the telescope focal length in mm by the eyepiece focal length in mm.
Keep in mind that the atmosphere plays an important role in seeing conditions, and
only the best seeing conditions will support high power viewing. Additional power
under less than ideal seeing conditions will not result in an increase in viewable
details, and lower powered eyepieces should there be used under those conditions.
It's easiest to locate objects using low power eyepieces (20X magnification) and then
zoom in by switching to higher powered eyepieces. The largest field of view will be
seen using a 12X low power-wide field of view eyepiece. Also remember to let the
telescope reach thermal stability for optimal results. A triplet lens takes longer than
a doublet to cool down. A stable tripod or mount is recommended for optimal
viewing. This includes high quality photography tripods, and German Equatorial
mounts, which are designed for astronomical use and include precise tracking of
celestial objects. William Optics is marketing a very practical Alt-Az mount too, which
will perfectly complement any of its refractors.
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Important Notice
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William Optics warranty does not cover damage to the focuser due to inappropriate tension setting.
This focuser is designed to hold many pounds without problems. If nonetheless
your setup requires additional tension adjustment, please use the tension allen
screw under the focuser.
In order to avoid sagging or denting of the focuser steel reinforcement, it is
necessary to adjust tension ONLY when the drawtube is FULLY EXTENDED.
Extend the focuser drawtube to its full 93 mm as in the picture
here above before performing adjustment.
The Fluorostar has been specifically designed for astrophotography; it will produce
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excellent results when used with the proper equipment. Being this a high-end
astrophotography telescope, it should be mounted on a good mount. Please see our
website for examples of photos taken with these telescopes. The Accessories Chart
on page 4 provides additional details on photographic accessories for various CCD,
digital and film cameras.
Optional accessories from WO include mounting rings and plates, super high-quality
2" Quartz star diagonals, and 2" Erecting Prisms (45 and 90 ), all of which provide
for superior viewing and high quality images.
Never aim your telescope or finderscope at the Sun without proper Solar filters
installed on the front of the telescope. Doing so for even a moment may permanently
damage your vision. Proper Solar filters consist of a filters made by reputable
manufacturers, designed to fit tightly over the front of the dew shield. Solar eyepiece
filters are not considered safe, and should not be used. With proper front mounted
Solar filters, the telescope will not be harmed by viewing the Sun. Contact your
Authorized WO Dealer for further information on the brands, sizes, and prices of
proper solar filters.
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Storage and Cleaning
We suggest placing all accessories inside an airtight container with desiccative
control. Secondly, remember to store the telescope in a non-humid environment,
never leave it in a hot heated environment. If not properly stored, it may
develop mildew growth and other preventable build up.
Be particularly careful after a night observation that the lens has no dew on it
before storing the telescope away.
In case the lens surface becomes dusty, smeared, or gets fingerprints or fungus
build-up on it, first of all, remove any surface particle by using an air blower,
then carefully proceed to wiping the lens gently with a lint-free proper soft cloth.
Use a lens liquid cleaner to get the best cleaning result. Make sure you change
your cloth to a new one from time to time.
The above-mentioned indications are not necessary if you carefully protect your
telescope.
The beautiful multi-layer Dupont paint white finish of your Fluorostar 110 is not
easy to ruin. Nonetheless take care of the exterior body tube by wiping it down
with a slightly damp soft cloth from time to time. Water should be enough to do
the job. Please do not use any organic solvent on your telescope, for example
alcohol, benzene and other hazardous chemical as this might ruin it.
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Caution for Safety
Caution! Never directly view the sun light with your telescope.
Do not aim your Fluorostar 110 at the Sun because this might impair your Loss
of eyesight can occur when your telescope is not properly protected by solar
viewing filter. (Solar filters can be easily purchased through your WO Authorized
Dealers).
Always place the optical telescope assembly (OTA) on a completely flat surface,
unstable placement of telescope may cause it to fall, and if handled without
caution, it may easily injure yourself and others.
Optional Equipment
A sturdy tripod for astronomical or spotting scope usage, or a telescope tripod and
mount (Equatorial or Alt-Az).
A mirror diagonal or erecting prism (The 2" WO Dielectric model is strongly
recommended for high quality astronomical viewing. A top quality Dielectric
Quartz model is now also available from WO).
At least one or two high quality eyepieces (9mm to 40mm wide-field recommended)
depending on the application.
Never use your telescope under rainy conditions: this telescope is not designed
to be water-proof. If your telescope accidentally gets caught in rain, please wipe
down the water with a dry clean cloth, but if the lens gets totally soaked by water,
please contact your WO Authorized Dealer right away for details on a service
solution.
Do not disassemble or attempt repairing your telescope without a written
authorization from William Optics Corp. : this violates the warranty terms under
the limited product warranty section and invalids any guarantee. Always consult
with your local WO Authorized Dealer or with William Optics Corp. for details on
how to service your telescope.
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Bundle Equipment
1. Aluminum carrying case.
2. Gold plated dew shield cover.
3. 2" to 1.25" adapter.
4. Various accessories depending on the package.
For astrophotography, a photo adapter plus a T-Mount connection are necessary.
William Optics offers a field flattener optimized for the Fluorostar 110, together
with a 35mm camera adapter or a 6x7 adapter.
Also available from WO:
WO 2" Star Mirror Diagonals.
WO 2" and 1.25" 45 Erecting prisms.
2.5x Apochromatic Barlow lens.
0.8x Reducer/ Field Flattener with CCD camera adapter (will work ok, but we
recommend the FLT field flattener instead).
Super wide angle SWAN / UWAN Eyepieces, 1.25" or 2" versions.
DCL 52, 28, 4337 series "Digital Camera adapter Lens for Digital Cameras and
Digital Video".
Digiscoping adapter: universal adapter for any type of digital camera.
WO 2" VR-1 filter improves seeing on bright objects like the Moon.
WO 115 mm mounting rings, saddle plate, dovetail plate combo for equatorial
mounting.
WO 2" Extension Tube.
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FLT-110 APO F/6.5 Features
The 2005 version of Flouro-Star 110mm lens only adds to the original optical and
mechanical perfection. Finally available at the lowest price in its class.
This telescope is ultimately designed for astronomers who plan to have the best
results in photographic/CCD usage. Only the best and most expensive are on a par
with this!
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Optically unbeatable
Features a top-quality triplet oil-spaced objective,
made in the USA by renowned Telescope Engineering
Company (TEC).
This scope has an extremely well corrected flat field,
ideal for astrophotography. Additional field flattener
available.
Crayford Focuser
Extra-smooth 4" Crayford focuser: a treat to use during
astrophotography. No more image shifting!
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360 rotatable.
Extra-heavy duty.
Large aluminum knobs.
Patented Design
Stainless steel reinforcement inserts on both sides and
on the back to allow heavy loading without problems.
Ball bearings on both sides of the focuser will make
your focusing experience the best you ever experienced
with a scope!
Graduated scale for precise camera alignment.
Do-all telescope
Despite of its 110mm objective, the scope is still very
compact and solid.
The focuser is so strong there is no need for a locking
screw.
Two-speed upgrade under development.
Simply beautiful finish
Pure William Optics quality fit and finish: powder-painted
white CNC-machined aluminum tube, golden finish,
retractable dewshield, anodized 360 deg. rotatatable
crayford focuser, dewshield cap.
Attention to details
Highly precise CNC machined lens cell.
Safety ball bearings on the CNC machined lens cell:
only from William Optics!
Total Quality Package
2" & 1.25" adapters included.
All with brass anti-marring compression rings.
Field flattner and adapters available.
CCD camera adapter optional (please contact us).
Attractive packages with WO accessories available.
Aluminum Case
Stow away your telescope in the practical and safe
aluminum case.
Though you will never need it, you have a 2-year warranty
from WO, and the certainty that we will be there to
assist you even beyond that, if you need!
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Recommended For This Scope
Reducer / Flattener
Field Flattener with adapters
Specifically designed to be used with this scope. Choose between a
35mm camera adapter or a 6x7 adapter. Do not forget to submit your best
shots to WO!
SWAN Eyepieces
1.25" Eyepieces
Super Wide Angle (72 ).
9 mm, 15 mm, 20 mm focal lengths.
5 elements in 4 groups, fully multi coated.
Parfocal.
2" Eyepieces
Super Wide Angle (72 ).
25mm 33mm, 40mm focal
lengths, FMC.
Generous eye-relief.
Diagonal Mirrors
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2" Quartz
Dielectric Diagonal
High-quality dielectric coating (99% reflectivity),
precision-polished quartz flat in our much-admired,
patented mechanics.
Our 2" Diagonals are what you need for your best
observing sessions. Only from William Optics.
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2" Dielectric
Diagonal Mirror
99% reflectivity with 1/10 lambda highÂprecision mirror surface, with elegant
exterior design, with 1.25" adapter.
UWAN Eyepieces
Crafting the Earth's Finest Astronmical Instruments
Uwan Eyepieces
Ultra Wide Angle (82 )
28mm (2"), 16mm (1.25"),
7mm (1.25"), 4mm (1.25").
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Mounting Rings
Erecting prisms
110 mm Mounting Rings internal diameter
These felt-lined mounting rings are made out of solid aluminum, powder
painted. A worthwhile investment if you want the best out of your mount and
telescope.
Digital Camera adapter Lenses
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2" 45 1.25"45
with 2" Barrel
45 Erecting Prisms
Perfect both for astronomical and terrestrial observations.
Revolutionary and sophisticated design, extra-smooth feel.
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90 Erecting Prism
1.25" 45
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DCL-52
This innovative digital adapter lens is designed for large-lens digital
camera and digital video cams users' needs.
It can be connected to any 2" diagonal or erecting prism.
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2" 90 Erecting Prism
High quality prism, coating and finish,
for good correct-image views of celestial
objects. Perfect in daylight too.
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PHOTO ADAPTER
Photo adapter
Anodized 2" camera adapter for prime
focus photography. Standard T ring thread.
Zenisthar 66 Triplet ED APO
ZenithStar 66 Triplet ED APO
Where you looking for a great little scope to piggyback to your scope? Choose
one of William Optics ZenithStar 66 scopes!
FinderScope & Bracket
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7x50 FinderScope
7x50 erecting illuminated finderscope,
with 5.2 FOV. The red illuminated reticle
allows a precise alignment.
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Quick release bracket
This excellent new quick-release bracket is
easy to use and great value. No need to
waste time mounting the bracket and
finderscope every night!
Red Dot Finder
Crafting the Earth's Finest Astronmical Instruments
Red dot finder (R.D.F.)
This very practical r.d.f. comes with a handy, quick-release bracket included
in the price. Centering your objects in the sky has never been easier!
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