Description
THE OPTICS
THE OMEGON ED APOCHROMATIC REFRACTOR IS DISTINGUISHED BY ITS OUTSTANDING OPTICS, INGENIOUS DESIGN AND EXCELLENT MECHANICS. THIS UNIQUE TELESCOPE ENABLES THE ASTROPHOTOGRAPHER, VISUAL OBSERVER AND NATURE ENTHUSIAST TO ENJOY THE STARRY SKY AND THE NATURAL WORLD TO THE BEST. NEEDLESS TO SAY THAT STARS AS THICK AS THE TIP OF A PIN ARE CLEARLY DISTINGUISHED EVEN AT THE EDGES OF THE FIELD OF VIEW, AND THAT THE MECHANICS ARE OF EXCEPTIONAL PRECISION.
THE APOCHROMATIC DUBLET
TRUECOLOR GLASS HAS BEEN USED FOR THE OMEGON DUBLET AND APOCHROMATIC LENS, THE TWO-LENS OBJECTIVE FEATURES A SKILLFUL COMBINATION OF OHARA FPL-53 AND S-NBM51 GLASS. THESE ARE SPECIAL GLASSES WITH A HIGH AND LOW REFRACTIVE INDEX AND THE BEST LIGHT TRANSMISSION PROPERTIES. VERY PARTICULAR IS THE S-NBM5 GLASS, WHICH IS USED ESPECIALLY FOR THE APOCHROMATIC SCHEMES OF FLUORESCENT MICROSPECTORS. WHAT DO YOU EARN? THAT YOUR OPTICS WILL SHOW YOU PARTICULARLY SHARP AND CONTRAST IMAGES! THE DELICATE SHADES YOU WILL CATCH DURING PLANETARY OBSERVING, FOR EXAMPLE, WON'T BE SHOWN TO YOU BY ANY SCHMIDT-CASSEGRAIN TELESCOPE.
THE CARBON TUBE
THIS APOCHROMATIC IS SUITABLE FOR VISUAL OBSERVING BUT IT IS SPECIFICALLY USED FOR Astrophotography. BENEFIT FROM THE ADVANTAGES OF THE CARBON TUBE: IT IS PARTICULARLY LIGHT AND THUS ALSO IDEAL FOR SMALL FRAMES. THE TUBE ALSO OFFERS YOU HIGH STABILITY AND ONLY MINIMAL CHANGES IN TEMPERATURE. VERY USEFUL FEATURES FOR ASTROPHOTOGRAPHERS: FOCUS REMAINS STABLE, EVEN ALL NIGHT. THE ANTI-DEW BAND IS ALSO MADE OF CARBON AND EASILY REMOVABLE. IT IS ALSO WRAPPED IN A BLACK FELT.
THE FOCUSER
THE TELESCOPE IS EQUIPPED WITH A CRAYFORD-TYPE FOCUSER. IT BELONGS TO A NEW GENERATION OF FOCUSERS, WITH PATENT APPLICATION PENDING. ABSOLUTE PRECISION AND HUGE BEARING FORCE ARE THE MAIN QUALITIES OF THIS FOCUSER. IN FACT, IT CAN SUPPORT UP TO 10 KG OF ACCESSORIES THANKS TO THE PRESENCE OF AN ADDITIONAL LOCKING SCREW. EVEN UNDER THE HIGHEST STRESSES THE FOCUSER DOESN'T MOVE A MILLIMETER: ONCE YOU HAVE FOUND THE FOCUS, IT DOESN'T MOVE ANYMORE WHATEVER YOU DO.
THE 1:11 REDUCTION IS A VALUE AID FOR FOCUSING, WHICH CAN THEREFORE BE MORE PRECISE THAN MOST TELESCOPES. DO YOU DO ASTROPHOTOGRAPHY WITH LARGE FORMAT CHIPS OR DO YOU THINK OF DOING IT IN THE FUTURE? EVEN WITH LARGE CAMERAS I GET IMAGES WITHOUT VIGNETTING. THE FOCUSER IS ROTATABLE: LOOSEN THE LOCKING SCREW AND A 360° ROTATION IS IMMEDIATELY POSSIBLE.
CARRYING CASE INCLUDED
THE ALUMINUM CASE INCLUDED IN THE SHIPPING IS THE IDEAL PROTECTION FOR PRECIOUS OPTICS. ULTRA-STURDY, WITH METAL HANDLES AND REINFORCEMENTS, IT WITHSTANDS ANY IMPACT WITHOUT PROBLEMS. INSIDE YOU WILL FIND PERFECTLY SHAPED FOAM COMPARTMENTS WHICH WILL KEEP THE TUBE IN THE PRECISE POSITION IN WHICH YOU PLACE IT.
THE ADVANTAGES AT A GLANCE:
MULTILAYER COATING ON ALL OPTICAL SURFACES
REFINED ANTI-REFLECTION SHIELD
HIGH CONTRAST AND HIGHLY DEFINED IMAGES
LIGHTWEIGHT AND STABLE: CARBON TUBE
CARBON DEW BAND WRAPPED IN BLACK FELT
FINE FOCUSING: FOCUSER WITH 1:11 REDUCER AND PROTECTIVE CAP
SPECIAL FEATURES:
ED-APO DUBLET WITH 80MM APERTURE AND 500MM FOCAL LENGTH
2" 360° ROTATABLE FOCUSER
LENGTH OPEN 46 CM, LENGTH CLOSED 39 CM
OTA WEIGHT ONLY 2.8 KG, TOTAL WEIGHT INCLUDING CASE 6 KG
EXTERNAL DIMENSIONS OF THE CASE 56X20X32 CM
OMEGON FIELD FLATTENER - PERFECTLY FLAT IMAGES FOR YOUR ASTRONOMICAL PHOTOS
MANY REFRACTOR AND MIRROR TELESCOPES ARE SUBJECT TO FIELD CURVATURE. IN A CURVED IMAGE, STARS CLOSE TO THE EDGE NO LONGER APPEAR AS CLEAR, BRIGHT POINT-LIKE OBJECTS, BUT AS FUZZY OVALS. THE NEW OMEGON FIELD FLATTENER WILL ENCHANT YOU WITH BEAUTIFUL, CURVED-FREE ASTRONOMIC PHOTOS, WITH PINK STARS TO THE OUTER EDGES OF THE FIELD OF VIEW.
TO GET THE PROBLEM UNDER CONTROL..
FIELD CURVURATION IS A COMMON OPTICAL ABERRATION, WHICH IS NOT NOTICED IN VISUAL OBSERVATIONS OR PHOTOGRAPHING WITH SMALL SENSORS. IF LARGE SENSORS OR FULL-FRAME CAMERAS ARE USED, THIS FAULT IS CLEARLY NOTICED. OF COURSE, YOU CAN ALWAYS CROP THE EDGES OF YOUR PHOTOS LATER, BUT IF YOU TRUST YOURSELF WITH A CAMERA WITH AN EXPENSIVE AND LARGE SENSOR, EVERYTHING BECOMES MORE ELEGANT WITH A FIELD FLATFORMER.
FLAT IMAGES OVER THE WHOLE FIELD OF VIEW
WITH THE FIELD FLATENER YOU WILL GET ABSOLUTELY FLAT IMAGES OVER THE WHOLE FIELD OF VIEW. THE FOCUS REMAINS UNCHANGED.
SUITABLE FOR TELESCOPES WITH FOCUS FROM F/4 TO AF/8
YOU CAN USE THE OMEGON FIELD FLATTENER ON ANY REFRACTOR WITH A FOCAL RATIO BETWEEN F/4 AND EF/8
THE M48 FITTING FOR OPTIMAL LIGHTING
TO BENEFIT FROM FULL ILLUMINATION, THE OMEGON FIELD FLATTENER HAS M48 THREAD ON BOTH SIDES. IN FACT, A T2 ADAPTER RING WITH M42 THREAD WOULD LIMIT THE LIGHT RAYS, CONSEQUENTLY NOT GUARANTEEING SUFFICIENT ILLUMINATION FOR THE SPECIFICS WITH 2" FOCUSER. ONLY WITH AN M48 FITTING WILL YOU BE ABLE TO ENJOY THE FULL LIGHT FLOW.
ADDITIONAL ACCESSORIES: BACK FOCUS 109MM
THIS FIELD-FLAPENER HAS AN EXTRA LARGE 109MM BACK FOCUS. IT MEANS THAT 109MM OF DISTANCE WILL BE REQUIRED BETWEEN THE LENS SURFACE AND THE CAMERA SENSOR. THIS IS AN ADVANTAGE: IN FACT YOU WILL BE ABLE TO INSERT LARGER ACCESSORIES, SUCH AS A FILTER WHEEL, A FLIP MIRROR OR AN OFF AXIS GUIDE. USING THE SPACER RINGS FROM THE OMEGON ASSORTMENT YOU WILL ACHIEVE THE OPTIMAL DISTANCE, WHETHER OR NOT YOU WANT TO INSERT OTHER ACCESSORIES. WE ADVISE YOU TO ALSO READ CAREFULLY OUR ADVICE ON ADAPTERS GIVEN IN THE EXPERT'S COMMENT.
THE ADVANTAGES AT A GLANCE:
FLATTENING OF THE FIELD OF VIEW FOR REFRACTOR
SUITABLE FOR TELESCOPES WITH FOCUS FROM F/AAF/8
M48 FITTING FOR FULL LIGHTING WITH 2"
POSSIBILITY OF INCLUDING OTHER ACCESSORIES: BACK FOCUS 109 MM
ROBUST MULTILAYER ANTI-REFLECTIVE TREATMENT ON THE LENS SURFACE
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