Ascension 80ED Скачать руководство пользователя страница 14 | Manualshive

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© Opticstar Ltd / Ascension 2007-2014

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cooled  camera  which  supports  long  exposures  in
conjunction with very low noise levels.

The  small  camera  pixels  of  the  DS336  XL  closely  match
the  focal  length  of  the  80mm  Ascension  refractor  to
produce unusually high definition images.

The 80mm Ascension refractor can also be used as a guide scope for auto-
guiding  motorised/GOTO  telescope  mounts  in  conjunction  with  an
appropriate  guide  camera  and  auto-guide  controller.  Complete  auto-guide
kits  include  the  Opticstar  AG-130M  CA,  AG-131M  CA  and  AG-131C  CA.
Such kits consist of a guide-camera, auto-guide controller, cables, adapters
and software to auto-guide with.

The  102mm  and  127mm  Ascension  triplet  ED  refractors  are  excellent  for
observing at any magnification and make excellent imaging telescopes when
coupled with a high quality camera like the 3.3mp Opticstar DS-336 XL and
especially the large-format 6mp Opticstar DS-616 XL.

The  Ascension  triplet  refractors  can  be  used  with  the  Ascension  optical
corrector to produce a flat field of view free of any distortions. The Ascension
corrector  has  been  designed  specifically  for  the  Ascension  ED  triplet
refractors  and  will  also  work  well  with  other  F6  to  F7.5  triplet  apochromatic
refractor telescopes.

An adapter may be needed to attach the corrector to a camera, filter-wheel
or other imaging accessory.

OPTICSTAR

DS-616 XL

OPTICSTAR

PL131C CA

C to T-thread

adapter

Ascension corrector

T-thread (M)

2-inch nosepiece

DS-336 XL

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Содержание 80ED

Страница 1: ......

Страница 2: ... Opticstar Ltd Ascension 2007 2014 1 ...

Страница 3: ...TLY ALWAYS SEEK ASSISTANCE IF IN DOUBT TO GET THE MOST OUT OF YOUR EQUIPMENT TAKE THE TIME TO READ THROUGH THIS MANUAL NEVER LOOK AT THE SUN WITHOUT THE CORRECT EYE PROTECTION LOOKING AT OR CLOSE TO THE SUN WITH OR WITHOUT AN OPTICAL INSTUMENT AND WITHOUT PROTECTION WILL PERMANENTLY DAMAGE YOUR EYES CHILDREN SHOULD ALWAYS BE SUPERVISED BY A RESPONSIBLE ADULT WHILE OBSERVING ...

Страница 4: ... Opticstar Ltd Ascension 2007 2014 3 ...

Страница 5: ...e yourself with your telescope so that you can get the best use of the equipment This manual details the setting up operation specification and optional accessories of the Ascension triplet air spaced apochromatic refractors Parts Depending on the model the following items are included with the telescope unless stated otherwise Ascension 80mm F6 Refractor Optical tube assembly with 1 10 Precision ...

Страница 6: ...ovetail High quality 2 dielectric diagonal 99 reflectivity Two 1 25 wide angle 70O high contrast eyepieces 10mm and 20mm High quality illuminated 8x50mm finder scope with bracket High quality telescope and accessories aluminium case Twenty page printed manual Interferometer report with HP models optional with Premium models Mounting the Telescope The telescope can be mounted on a telescope mount a...

Страница 7: ...ring by holding one firmly and turning the other loosen them enough to allow a good adjustment range Look through the finder scope and adjust the dioptre focusing ring so that the crosshair looks sharp finally tighten the dioptre locking ring against the dioptre focusing ring To focus the finder scope separate the finder scope focusing ring from the finder scope locking ring by holding one firmly ...

Страница 8: ...hese can be found at camera shops and electronics suppliers Finder scope Alignment To assemble the finder scope first remove the illuminator by unscrewing it form the finder scope Slide the finder scope in its bracket as shown in the above picture and gently tighten the three thumb screws to hold it in place take care not to over tighten the thumbscrews Screw the illuminator back in place Make cer...

Страница 9: ...e The image will by correctly oriented when looking through the finder scope 6 Turn the focuser knob to bring the target in focus and centre the object in the eyepiece 7 Re tighten the tripod mount movement locks so that the telescope remains stable during the finder scope alignment procedure 8 Look through the finder scope 9 Use the three collimating thumbscrews on the finder scope s bracket to a...

Страница 10: ...o observe like a large building or large tree Point the telescope towards the target so that it roughly lines up with the target Look through the finder scope if you have not aligned it already this is a good time to do so before you proceed Move the telescope until the target is visible in the finder scope and positioned under the cross hair Once the object is lined up in the finder scope you wil...

Страница 11: ...s are a unique sight and you should be able to observe the Cassini division which appears as a black gap between the rings Mars also known as the Red planet will reveal a good amount of detail when close to Earth Its orange colour is prominent and surface markings are visible as are the Polar caps when present Venus can be observed early in the morning before dawn or just after sunset Venus appear...

Страница 12: ...lease keep in mind that targets near the horizon will not look as sharp targets near the zenith will look substantially sharper Avoid setting your telescope on concrete wood and grass are better as they do not release heat Your line of sight should ideally not pass just over a warm house as the rising heat will substantially affect the quality of the image When conditions are not favourable the ma...

Страница 13: ...st all telescopes including the Ascension refractors light pollution filters can also help by reducing sky glow and incoming light from other local light sources Imaging Accessories When imaging with a camera attached to the telescope infra red IR block nebula UHC and narrow band filters O3 H alpha S2 are recommended depending on requirements For colour imaging an IR block filter will work well to...

Страница 14: ...to auto guide with The 102mm and 127mm Ascension triplet ED refractors are excellent for observing at any magnification and make excellent imaging telescopes when coupled with a high quality camera like the 3 3mp Opticstar DS 336 XL and especially the large format 6mp Opticstar DS 616 XL The Ascension triplet refractors can be used with the Ascension optical corrector to produce a flat field of vi...

Страница 15: ... Opticstar Ltd Ascension 2007 2014 14 APPENDICES ...

Страница 16: ...100 times per inch of aperture for very high quality apochromatic refractors Maximum useful magnification from a city with most telescopes is around x35 per inch of aperture this is due to light pollution thermal currents and other environmental factors Expect much higher magnifications from a dark site when using the same telescope Eyepieces and Magnification The actual magnification capability o...

Страница 17: ...gher power lunar and planetary observation as well as high magnification imaging in general For example when imaging extended deep sky objects like nebulae and galaxies an f 4 telescope will capture four times the mount of light in the same time period when compared to a telescope with an f 8 focal ratio The same does not apply to single point light sources like stars where aperture alone dictates...

Страница 18: ...propellant which will stain the optics Stains on optics can be removed with optical cleaners used to clean photographic lenses Always use compressed air at very low pressure as contaminants that may have landed on the lens could scratch the glass surface never rush the cleaning process Condensation When temperature drops rapidly condensation may form on the objective lens of the telescope This hap...

Страница 19: ...eed The focuser has been designed to be fine tuned externally by the user It is also possible to re adjust the internal clutch of the focuser mechanism to regulate the tension on the focuser drawtube for which the clutch will need to be removed for the adjustment to take place Please keep in mind that this is a rather difficult procedure to perform without experience and the right set of tools To ...

Страница 20: ...ews A and B 2 Use a hex key to loosen the two larger centre locking screws D1 on the top of the focuser on either side 3 Adjust the two pairs of screws D2 and D3 on either side of the focuser in very small increments until you obtain the preferred focus knob tension 4 Use a hex key to tighten the two locking screws D1 5 Screw B back into place and adjust until you obtain the desired tension on the...

Страница 21: ...tographic lens for the imaging camera necessary Guiding Telescope To accurately guide the mount during long exposures complementary Motorised Mount To mount the scope and guide scope if one is used necessary Imaging Camera To capture images of the Moon planets galaxies etc necessary Guiding Camera To track a selected star via the guide scope complementary Guide Controller To pass drive adjustment ...

Страница 22: ...ed in 1mm intervals Support Dovetail OTA rings with carry handle dovetail Weight 2 75Kg 5Kg 7 5Kg Telescope size LxWxH 385x90x90mm 590x130x130mm 855x160x160mm Length extend dew shield 465mm 740mm 1050mm Focuser assembly width 15mm 15mm 15mm Frontal dew shield diameter 120mm 135mm 165mm Construction All metal construction steel aluminium brass Tube design Suitable for use with bino viewers Accessor...

Страница 23: ... Opticstar Ltd Ascension 2007 2014 22 ...

Страница 24: ... Opticstar Ltd Ascension 2007 2014 23 Opticstar Ltd 87 Washway Road Sale Greater Manchester M33 7TQ United Kingdom WEB www opticstar com EMAIL info opticstar com ...

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