Stellarvue PREMIER SVX80T-3SV Manual de usuario
STELLARVUE
STELLARVUEC
TELESCOPE OPERATORSMANUAL
SVX80T-3SV
PREMIER APO TRIPLET
A Division of Auburn Precision Optics
WWW.STELLARVUE.C M
11802 EMPERROAD, AUBURN, CA 95603 U. S. A
PHONE (530) 823-7796, FAX (530) 823-8121
STELLARVUE
STELLARVUEC
SEEING IS BELIEVING
The mission of Ste arvue is to inspire a hea thy interest in science
and astronomy by handcrafting the finest te escopes on the p anet.
Table of Contents
Section Page
Table of ontents, Specifications..........................................................................................................1
A message from Vic Maris ....................................................................................................................2
Making world class optics ....................................................................................................................3
Whats inside the box ............................................................................................................................4
Attaching the telescope to the mount....................................................................................................5
Setting up for visual use........................................................................................................................6
Eyepieces ............................................................................................................................................7
Observing tips ......................................................................................................................................8
Accessories chart..................................................................................................................................9
Reflex sights........................................................................................................................................11
Optical finder scopes ..........................................................................................................................12
Solar viewing ......................................................................................................................................13
Astrophotography................................................................................................................................14
Field flattener ......................................................................................................................................15
Reducer/Flattener ..............................................................................................................................16
The focuser ........................................................................................................................................17
are and maintenance........................................................................................................................18
Warranty..............................................................................................................................................19
Solar warning ......................................................................................................................................19
1
SPECIFICATI NS
bjective Lens: Air spaced 80 mm, 480 mm focal length (f-6) fully multi-coated, apochromatic triplet using
an extra low dispersion and Lanthanum elements. Extremely high Strehl ratio as with all SVX
series lenses. Zygo test report included.
Tube Assembly: All aluminum, Instrument White, 4” diameter tube. Telescope is 16" long with dew shield
retracted and 18.75" long when extended.
Dew Shield: 6 5/8" (168 mm) diameter, 9 5/8" long retracting aluminum dew shield in Instrument White with
black anodized fittings.
Dimensions: OTA: 5.5" diameter, 16" long with dew shield retracted and 18.75" long when extended.
Weight: OTA: 10.4 pounds with riser blocks and rail.
Focuser: Stellarvue's highly rated 3.5" dual speed, rack and pinion focuser with 2" and 1.25" threaded
adapters. Includes our standard FBB dovetail shoe for use with our finderscope rings.
Rings: Very heavy duty, American made cnc mounting rings using 6061 T6 aluminum plate. Five threaded
1/4-20 holes top and bottom spaced 1.5" and 60 mm apart with one in the center. 5 mm side hole for reflect
finder mounting.
Case: 18 Durable Heavy Duty ase with custom foam insert.
Diagonal: Optional. Please note, you can save $50 when you buy our best 2” star diagonal with the
telescope.
Photographic Field Flattener: SFF4-80-3SV. Image at 480 mm f-6, full frame.
Photographic Field Flattener/Reducer: Optional. SFFR .74-3SV. onverts telescope to a 356 mm
f-4.5 full frame Astrograph.
Light Gain: 131 X (human eye = 1)
Contrast & Color Correction (1-10): 10
A MESSAGE FR M STELLARVUE F UNDER VIC MARIS
When I w s child, I developed love for stronomy. My p rents w nted
to encou rge my interest, so they bought me 60 mm refr ctor. Like m ny
store-bought telescopes it w s poorly m de, showed very little det il, nd
w s difficult to use. I struggled for months nd bec me very discour ged.
Then, I le rned it w s possible to m ke telescope. Using my llow nce, I
s ved nd purch sed p rts, ground nd polished 6” mirror, nd m de my
first h ndcr fted telescope.
At the ge of 16, I went on to grind nd polish two-element, 5” chrom tic lens. I le rned gre t de l in
these e rly ye rs nd discovered first-h nd the import nce of excellent optics combined with mounts th t were
mech nic lly st ble. Viewing the night sky using my h ndcr fted telescopes fed my interest, nd inspired me
to continue le rning more bout stronomy nd m king telescopes.
Re lizing th t there w s need for high-qu lity refr ctor telescopes on the
m rket, I beg n Stell rvue in 1998. We h ve since invested in high-end
computer numeric controlled equipment nd st te of the rt testing f cil-
ity. I m proud to s y th t e ch employee currently working t Stell rvue is
committed to m king the best telescopes possible. Tod y, we deliver the
finest po-triplet refr ctors v il ble, nd we strive to m int in very high
st nd rd of customer service.
Stellarvue telescopes are individually made, and each optic is tested multiple times to ensure perfection.
Please store and use it as you would any optical device. If dust accumulates on the lens, you may use a bulb
type blower to remove it. Always be careful to avoid marring the lens.
Stellarvue refractor lenses are fully multi-coated to increase light
transmission and contrast. Lenses are accurately hand-figured and
glass test plates are used to ensure accuracy. A test plate is a sepa-
rate optic that is figured to the precise curve required for a particular
optical surface. We make test plates for every surface on every optic
we make. These plates are placed on top of the surface of the lens
to ensure it is polished to the exact curve. When the curve on the
lens matches the curve on the test plate, straight lines will show
under an UV testing light. Placing these glass plates on the surface of the lens may result in some very fine
cosmetic lines or marks which do not affect performance in any way. This is normal in a high Strehl lens that is
continually tested during polishing.
Stellarvue strives to ensure the highest optical accuracy.
While many companies producing mass-produced lenses
rely solely on test plates, we confirm the accuracy of each
optical surface using our Zygo phase-shifting laser inter-
ferometer and extremely high precision test spheres that
measure the entire clear aperture of the objective lens.
With our SVX series telescopes we map the optical sur-
face and hand correct any imperfections in its figure. This
increases the accuracy of the objective to the highest
possible levels. This work is done in our optical shop
under tightly controlled conditions.
2
MAKING W RLD-CLASS PTICS
At Stellarvue we believe you ‘get what you pay for,’ and cater to those who are looking for a high-quality
product with reliable optics. While making commercial grade mass-produced optics is relatively easy and fast,
it results in unreliable products. That’s why we take the time to make each apo-triplet lens as close to perfect
as possible.
People often ask us what type of glass we use, which is the
wrong question. While we use the best, lowest-dispersion
glass, glass type says nothing of its consistency or
homogeneity. Bad glass makes bad optics, which is why it is
important to test each optic individually.
Stellarvue is a division of Auburn Precision Optics (APO). In
addition to making telescopes we make optics for defense and
space science. This has allowed us to expand our optical and
cnc machine shops here in Auburn, alifornia. Using state of
the art testing equipment has significantly improved the optical
prowess of all SVX telescopes.
Mechanical quality is of extreme importance in making a world-
class instrument. Using N machines and high-quality materi-
als makes a substantial difference. Our mounting rings for apo
triplets 80 mm and bigger, for example are machined in our shop using 6061-6 aluminum and stainless steel.
These rings are far stronger than imported cast aluminum rings.
What makes the SVX remier Series so unique?
Each SVX refractor telescope is individually assembled and tested using our advanced equipment to ensure
they meet our highest optical and mechanical standard. Our entire SVX line of telescopes use optics that are
hand figured in our optical shop in Auburn, alifornia. After machine polishing we map the optical surfaces
using our Zygo Phase Shifting Laser Interferometer. This equipment is capable of measuring surfaces far more
accurately than test plates or other conventional methods. Using these data, we then make fine corrections by
hand and machine using special tools to eliminate zones, trefoil and other optical defects as we bring up the
optical accuracy as high as possible. When all of
this work is completed and the lens is essentially
perfect, we take one final measurement of the ob-
jective and print the report for the customer who
buys it. All SVX objectives are accompanied with
its unique Zygo test report, boasting an extremely
high Strehl ratio with a smooth figure. SVX Pre-
mier Apo Triplets are for the discerning (experi-
enced) astronomer who recognizes the crème de
la crème when they see it.
Why designate this series with an “X”?
We have made a number of significant break-
throughs these past two years in developing this
series. It took a major investment in staffing, cnc
machines, conventional spindles and a great deal
of individual commitment to reach this extreme
level of accuracy in a production instrument. For
this reason, we decided to differentiate these tele-
scopes with an “X” to signify extreme. These are
the telescopes to buy if you wish to view the uni-
verse visually and image it using matched field
flatteners that turn these exceptional lenses into
wide field astrographs.
3
Alex our roduction Manager using Stellarvue’s
Zygo hase Shifting Laser Interferometer to test
and adjust a Stellarvue Obective lens.
Sample screenshot taken during our Zygo Interferometer testing.
Your telescope came with a printout just like this but it is of its own
test to verify its high optical standard.
This is your telescope’s report card.
4
WHAT IS INSIDE THE CASE
UNPACKING
Stellarvue telescopes are securely boxed or double boxed in a padded case. Be careful when using a blade to
open the shipping box. This will avoid damaging the case inside with your knife. arefully remove the tele-
scope from the cardboard box, and set it on a secure surface. Unzip or unlatch the case to reveal the tele-
scope inside.
Unpack the telescope from its case and make sure you have all the
necessary parts:
1. Objective over
2. Telescope
3. Two Mounting Rings
4. Finder Scope Shoe
5. 2” Adapter
6. 1 1/4” Adapter
7. Plug
8. Mounting Plate
9. Risers
10. Travel ase
(hard case no longer available)
11. Manual
12. Q hecklist
13. Test Report
5
ATTACHING THE TELESC PE T THE M UNT
With the mounting rail securely attached to the rings, slide the rail into the dovetail shoe on the telescope
mount. Make sure you secure the rail to the mount with the hand screws on the mount. If you do not secure
the rail tightly, the telescope may slide out of the mount, causing serious damage to the telescope.
Step 1: Loosen the hand knobs on
the mount’s dovetail shoe.
Step 2: Slide the mounting rail into
the shoe
Step 3: Tighten the knob(s) securely.
ATTACHING THE M UNTING RAIL
The telescope attaches to the telescope mount using a dovetail mounting rail. The dovetail mounting rail is
attached to riser blocks that attach to the bottom of the telescope’s rings. This is all attached using 1/4-20
socket cap head screws. The SVX80T is normally supplied with a Losmandy style rail. Generally telescope
mounts use one of two different style mounting rails. Select the proper size of rail for the mount you are using.
Most larger mounts use the larger Losmandy-style rail, which is 4”
wide. Mounts using this size rail include the Stellarvue mounts with our
TDLV shoes, Paramount, Losmandy, Mathis, Discmounts, and larger
elestron mounts.
Smaller mounts use the Vixen-style mounting rail, which is about 1 3/4” wide.
Mounts using this size rail include the elestron AVX mount, Vixen mounts and
many other hinese import mounts. If you want to use your SVX80T with a mount
that uses a Vixen rail order a TP-012 rail and place it under the riser blocks in place
of the Losmandy style rail.
Risers and a long rail are ideal when using small telescopes and
cameras. Since the camera may weigh as much as the telescope it
may be necessary to move the telescope forward along the rail to
attain balance. The risers permit the use of larger cameras placed
above the rail.
6
Erecting Prism:You may convert your instrument to a razor-sharp terrestrial
telescope by replacing the star diagonal with an erecting prism. Unlike the star
diagonal, the erecting prism will provide a correctly oriented view through the
eyepiece. So while we do not recommend an erecting prism for viewing at night,
we highly recommend them for daytime viewing.
Pictured to the left is the D1035 45 degree, 2” erecting prism.
The Star Diagonal:The Stellarvue D1040Q diagonal uses a thick and
accurate 1/10 wave low expension quartz mirror with a 99% dielectric
coating. Astronomers prefer mirror star diagonals over prisms because
they are sharper and provide the highest con-
trast. Mirror star diagonals present an image
that is right side up but reversed left to right.
Vic Maris designed the D1040Q diagonal
body over a two year period. It is made with
an adjustment mechanism that allows our
Stellarvue assemblers to attain perfect align-
ment. It also cushions the mirror to eliminate
pinching. All of this is critical if one wants to
attain the highest level of performance.
SETTING UP F R VISUAL USE
Now that you have securely attached the telescope to the mount, you will need to balance it in both axes. The
mount manual explains how to do this. If you are using an equatorial and/or go-to computerized mount, you
will need to align the telescope according to the mount manual to get it ready for use. Once the telescope is
balanced and the mount aligned, you are ready to observe!
Two additional optical components are necessary to be able to view through
your telescope at night: a star diagonal and an eyepiece.
* The star diagonal reflects the light 90 degrees. Without it the viewer would
be forced to look upward when viewing and this would be extremely
uncomfortable.
* The eyepiece is needed to focus and magnify the image.
The star diagonal is inserted into the focuser, and the eyepiece is then inserted into the star diagonal.
Stellarvue #D1040Q two inch
dielectric quartz star diagonal
1 1/4”
Adapter
Star
Diagonal Eyepiece
2” Adapter
Thumb Screw
If using a 2” star diagonal, loosen
the three 2 inch adapter thumb
screws and remove the 1 1/4”
adapter.
Install the star diagonal and
make sure it is held in place
tight by securing the three 2”
adapter thumb screws.
Insert the eyepiece into the star diagonal
as shown. Make sure the thumb screw
on the diagonal holds the eyepiece in
place securely.
7
Eyepieces:While the telescope’s light-gathering power depends on the size of the telescope’s
objective lens, its magnification power depends on the eyepiece used. In order to see objects clearly
at the proper magnification power, we recommend having four or more eyepieces.
1. Low-power, wide-field eyepiece:You need a low-power, wide-angle eyepiece to more easily
locate objects in the sky and to observe extended objects like the Andromeda galaxy. Our best wide
field eyepiece is the Stellarvue Optimus 20.
2. Medium-power eyepieces:Boosting the power darkens the sky background and shows more detail in deep
sky objects such as nebulae, star clusters and galaxies. We recommed the Stellarvue Optimus 9 and 13.5
eyepieces as the best for medium-power deep sky viewing.
3. Two High-power eyepieces:Viewing planets, close double stars, and small craters on the moon requires a
high-power eyepiece. We recommend having two high-power eyepieces because the atmospheric seeing con-
ditions cannot always support the highest power. Having two high-power eyepieces of different focal lengths
will allow you to adjust the magnification based on the seeing conditions. We recommend the Optimus 3.6 and
4.7 eyepieces.
The amount of magnification is determined by dividing the focal length of
the telescope by the focal length of the eyepiece. The SVX80T has a 980
mm focal length. A 20 mm eyepiece, when used with this telescope, will
provide a magnification of 24 power (480 mm/20 mm). This means objects
appear 24 times closer. The smaller the focal length of the eyepiece, the
higher the power becomes. So our 4.7 mm eyepiece provides 102 power
(48mm/4.7mm).
The ability of a telescope to magnify is limited by:
A. The accuracy of the optics
B. The steadiness of the atmosphere
Under perfect conditions the SVX80T is capable of magnifying
objects 20 - 300 times. Unfortunately, the air is often unsteady
due to air turbulence. This causes the stars to twinkle and limits
the ability of any telescope to show fine details. Adding more
power only increases the size of the burry image. This is referred
to as “empty magnification” since it is too high of a power for the
conditions and actually shows you less. Under turbulent condi-
tions, it is best to use a lower magnification eyepiece.
If you purchased the entire set of Optimus eyepieces you may
notice that on a given night the planetary views through the 3.6
mm eyepiece may be soft. This indicates that the seeing condi-
tions are not optimal, so it is wise to switch to the 4.7 mm eye-
piece. The image will be smaller but sharper.
Stellarvue optics are extremely accurate. If details are soft when
you observe through it, you either did not let the optics cool down
enough or you are observing under less than favorable condi-
tions. Be patient. On a steady night you will see magnificent de-
tail.
Magnification is not as important on larger extended objects.
Many amateur astronomers switch from planets to star clusters
and nebulae when the air is unsteady.
Jupiter appears sharp under steady skies and its
moons appear as disks.
Unsteady air distorts the moons
and Jupiter is soft with little detail
O TIMUS EYE IECES
8
BSERVING TIPS
Cool down: Optics are affected by temperature changes, so it is not recommended to take a telescope from a
warm room to the cold night and immediately observe with it. The objective lens must settle down to the ambi-
ent temperature before it performs as it should. It is best to leave the telescope outside for a couple of hours to
let it cool down and acclimate.
Plan out your observing session: Use a good planetarium pro-
gram to see what celestial objects are viewable in your location
when you are observing. Observe dimmer deep sky objects after it
gets completely dark and planets when they are as high in the sky
as possible. Planets and stars will be less affected by air turbulence
and atmospheric refraction when they are higher in the sky. This is
because you are looking through less atmosphere.
Dark adapting: It takes at least 15 minutes for your eyes to adapt to the darkness so
you can see faint objects. If you use white light at night you will ruin your night vision.
The human eye is less impacted by red light, so always use a red observers flashlight
when observing. If a car approaches, avoid looking at the headlights. If your observing
session includes the moon you may want to do it last as it will seriously impact your
night vision. A good moon filter is recommended when observing the moon to filter out
80% of the moons glare. It is reflected sunlight after all.
Record your observations: It is fun to try your hand at sketching planets, clusters and other deep sky
objects. heck out the Astronomical League https://www.astroleague.org/ for more information.
Heat sources: Avoid looking at planets, the moon, or close double stars when they are positioned above a
house roof or other structure that gives off heat. It will distort the views at higher powers.
Atmospheric Diffraction: The atmosphere can cause your telescope to exhibit false
color. That color is not in the telescope, but above you. Moisture in the atmosphere may
act like prisms, and brighter objects will appear with a reddish color on one side and a
green-blue color on the other. This is the atmosphere, not your telescope.
Observing deep sky objects: Deep sky objects like nebulae and galax-
ies can be very hard to discern for new hobbyists.The more experience
you have, the more of them you’ll be able to see. Avoid observing when
you are tired or after consuming alcohol or drugs. With time, you will be-
come more able to see these very low contrast, diffuse objects. Try using
averted vision, where you look to one side of the object where your eye is
more sensitive. If you are looking at a diffuse object and you are not sure
you are seeing it, lightly tap the side of the telescope and as the stars vi-
brate, so will the object. When observing deep sky objects, if you want to
focus the telescope better, focus on the brigtest star in the eyepiece, not
the diffuse object. Finally, when observing objects like gobular star clus-
ters make sure you are not touching the telescope. Even a small vibration
can render dimmer stars invisible.
Comfort: Dress warmly enough for the night air, if you are cold you will not see as much. This is particularly
true for your ears. over your ears and you will retain more body heat. Use a comfortable chair and position
yourself so you are not craning your neck or twisting your back. If you have a refractor that requires you to get
down on your knees, use a padded kneeling mat.
Putting it all away: Always keep the telescope capped and/or covered when not in use. After a night under
the stars, bring your telescope inside and let it acclimate to the indoors. If dew has formed on your lens, uncap
both ends and let it air dry before putting it away. Do this in a room that is dry and relatively dust free. Putting
your telescope away wet can encourage mold growth and while that is rare, it is something you should
always avoid.
Globular luster
ACCESS RIES CHART
Stellarvue 1.25”
Diagonal #D1030ED
SFF4-80-3SV
Field Flattener
SFFR.74 Focal
Reducer/Field Flattener
1.25”
Eyepieces
2” Eyepieces
Optional
1.25” Filter
Optional 2” Filter
Optional Quark Solar Filter with
UVIR Energy Reduction Filter
VISUAL ACCESSORIES
IMAGING ACCESS RIES
VISUAL ACCESS RIES
M UNTING PTI NS
1.25”
Eyepieces
Optional
1.25” Filter
DSLR
Camera
T-Ring
T-Ring
Extension tubes required for
your CCDcamera (call
Stellarvue for assistance)
CCD
Camera
Extension tubes required for
your CCDcamera (call
Stellarvue for assistance)
Stellarvue 2” Dielectric
Diagonal #D1040Q
FA2 1.25”
Adapter
FA2 1.25”
Adapter
DSLR
Camera
CCD
Camera
Remove 2” adapter on
focuser and thread into
focuser drawtube
Remove 2” adapter
on focuser. Thread
into focuser draw-
tube.
9
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