SHARPSTAR 94EDPH User manual

94EDPH
SHARPSTAR OPTICAL INSTRUMENT CO.,LTD
INSTRUCTION MANUAL
Address：3/F,�No.5�building�,Science�and�Technology�Center,�
No.79�Jin-Sui�Road,�Jia-Xing,�Zhe-Jiang,�China
Tel：[phone]
Fax：�0573-82331689
Web: www.sharpstar-optics.com

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·Caution----------------------------------------2
·Specification------------------------------------2
·SHARPSTAR 94EDPH Telescope Parts----------------3
·Included In The 94EDPH Box------------------------4
·Description-------------------------------------5
·Mechanical Structure Diagram-----------------------5
·Using Steps-------------------------------------6
·Cleaning And Maintenance--------------------------8
·After-sale Service--------------------------------8
CONTENT

2
Caution
Specification
Please do not observe the sun directly through this telescope,
which may cause instant blindness. Please be well-prepared with
special solar observation filters and necessary observation guides. It
can also cause serious damage to your eyes if you look at the Sun
through its finderscope. Please keep your children away from using
telescope alone during the daytime.
Aperture: 94mm
Limiting magnitude: 11.62
Focal ratio: F5.5
Resolution: 1.28 arc-seconds
Objective lens type: Triplet air-spaced APO
(including two extra-low dispersion ED glass elements)
Tube length overall: 468mm
Main tube diameter: 118mm
Accessories: a pair of tube rings, a dovetail plate, a handle
Weight: 3.3KG

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SHARPSTAR 94EDPH Telescope Parts
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Dust cap
Dew shield
Main tube
360° rotator
Finderscope bracket
2" adapter
1.25" adapter
Carrying capacity adjustment screw
2.5" focuser
Coarse adjustment knob
Micro adjustment knob
Hollow tube ring
Multifunctional handle
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①
②
③
④
⑤
⑥
⑦
⑧
⑨
⑩

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SHARPSTAR 94EDPH telescope tube one
Tube ring one
Multifunctional handle one
Finderscope bracket one
Aluminum carrying case one
Shock-absorbing EPE foam protection one set
Instruction manual, Postcard, Warranty Card one set
Included In The 94EDPH Box
①
②
③
④
⑤
⑥
⑦
①
②
③
④
⑤
⑥
⑦

Brand new SHARPSTAR 94EDPH is the third model in the EDPH series. The 94EDPH
is a 94mm apochromatic f/5.5 refractor with a focal length of 517mm. It adopts triplet
air-spaced optical design, including two extra-low dispersion (ED)glass elements,
which offers superior contrast and sharpness as well as virtually no detectable chro-
matic aberration. In the mechanical design, 94EDPH is extraordinarily elegant, porta-
ble and of high-quality. The 94EDPH has so much to offer on your way exploring the
universe. It performs well whether for visual observation and astrophotography.
94EDPH were also specially equipped with the F4.5 focal reducer. which supports
full-frame images, bringing more possibilities for deep-sky imaging.
94EDPH is definitely an ideal choice if you are still looking for a fast and full featured
travel APO refractor.
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Description
Mechanical Structure Diagram
Spot diagram

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94EDPH is a high-precision optical instrument, so do not operate under high-tem-
perature and high-humidity conditions for quite a long time, for fear of causing irre-
versible damage to its performance and service life.
●Connecting steps of the tube
1. Carefully take out the 94EDPH main tube and the attached tube ring, dovetail plate,
finderscope bracket and the locking screw at the focuser bottom.
2. Install the finderscope bracket.
3. Place the main tube into the tube rings, then lock in the tube rings.
4. Put the dovetail plate right into the dovetail slot of equatorial mount or theodo-
lite(both are not included).
Note: This dovetail plate we provided can match up with most purchasable equatorial
instrument’s narrow-type dovetail slot. Refer to Figure 1 for the connection.
Figure 1
●Use before
Please carefully check if all the accessories are thoroughly and safely attached to
the main body and make sure the tube firmly sits onto the slot.
94EDPH for visual observation
1. Take off the front dust cap, then adjust to extend the lens hood for avoiding stray
light.
2. Slightly loosen the 2" screw on the focuser and built in a 2" diagonal or a prism(not
included), then inserting the 2" or 1.25"eyepiece(not included). So far, The imaging
system is basically done.
3. Use a finderscope for help or directly angle to the object that you’d like to ob-
serve. First rotate the coarse adjustment knob to focus the target gradually clear(Fig-
ure 2) and then moderately rotate the golden fine focus knob until the image is
sharp(Figure 3).
Using Steps
Figure 2 Figure 3

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●How to use finder bracket
The finder bracket is provided, it locates on the upper side of the tube ring for the
purpose of connecting and fixing the finder. There are various types of finder for
users to choose.
Due to its low magnification and wide field of view, users can more easily and quickly
find the targets. Here are the using steps:
①Insert the dovetail of finder bracket right into the finder base, tighten it with screws.
② Adjust the finder and refractor tube until their optical axes are parallel. A simpler
way is to aim at a certain ground object, calibrating until the targeted object sits as
exactly at the center of your field of view as through the refractor tube.
③You can first target the bright stars around a perspective subject with your finder.
Because you have adjusted your finder optical axis paralleled to that of the tube, you
can observe the goal star through the tube.
●How to use 360°rotator
We provide 2.5" focuser together with a high-quality 360° rotator, which is quite
helpful for astrophotography.
This rotator comprises 3 adjusting screws and 1 tightening screw. Loose the tighten-
ing screw and then you can rotate the focuser.
The focuser rotates slowly and evenly because of damping phenomenon. Even the
focuser bears certain resistance when working, the converter won’t slip or misalign
due to our reasonable design and exquisite craft.
Users can adjust each of 3 adjusting screws so the rotator can rotate more easily.
(Caution: the adjustment range of the screw is not large, so please handle them with
much more care. Do not over-loosen the screws which may entail entire fall-off of the
angle adjuster.)
We have already properly adjusted the rotator, so self-adjustment is not really rec-
ommended.
94EDPH for astrophotography
94EDPH
With specialized F4.4 focal reducer
The right attachment order:① 94EDPH→②94EDPH focuser→③F4.4 specialized focal
reducer→④T-adpter ring(not included)→⑥camera(not included)
Camera
（optional）
Camera Adapter
（optional）
F4.4 Reducer
94EDPH Focuser
M74x1
M74×1
M48×0.75
360°Rotator

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①Avoid direct sunlight, high temperature, impact or humidity.
② Please keep the telescope in an unheated, dry and dust-free place, com-
pletely away from acid, alkali and other possible corrosive chemicals.
③Lenses are the essential part of a telescope, so pay special attention to
them. This doesn’t mean disassembling or cleaning the lenses without any
professional instructions. Instead, use a camel hair brush or some brushes
alike to gently whisk the surface of the lenses in one direction to remove the
dust. And then tenderly dampen a piece of sterile surgical cotton wad or lens
tissue with drops of mild lens-cleaning solution. Gently blot the lenses and
use a dry piece of lens tissue to blot up any moisture. Remember, never use
elbow grease to get out a stubborn stain. After that, use an air bulb to softly
blow away the residues. Please do not blow across the lenses with your
mouth.
④ Pay attention to the instant change of temperature: try to avoid directly
getting the telescope from a chilly environment into a warm environment,
which may cause condensation on the lenses.
Cleaning And Maintenance
Feel free to contact us(9:00-17:00 from Monday to Friday) if you have any
questions on installation, operation or maintenance.
E-mail: support@sharpstar-optics. Come
Tel: [phone]
After-sale service

SHARPSTAR OPTICAL INSTRUMENT CO.,LTD
Address：3/F, No.5 building ,Science and Technology Center, No.79 Jin-Sui Road,
Jia-Xing, Zhe-Jiang, China
Tel：[phone]
Fax： [phone]
Web：www.sharpstar-optics.com