Ilmoitus on sulkeutunut
Huudettavana kuvan ja otsikon mukainen Hyperstar linssi, joka on tarkoitettu Celestron C6 SC XLT Schmidt Cassegrain kaukoputkeen.
Uusi ja käyttämätön.
Ainoastaan testikuva otettu pihan tuija-aidasta ja linssi toimii niinkuin kuuluukin.
Valmistaja: Starizona - Made in USA
Kauppaan kuuluu kuvan Storm Case M2050
Celestron USA was one of the first big telescope manufacturers who was able to design fast Schmidt cameras for the consumer market.
With the Hyper Star system, Celestron tied in with this tradition. In a few minutes, you can turn your Schmidt-cassegrain into a fast f/1.9 Schmidt camera suitable for the high resolution of modern CCD sensors.
The Hyper Star system replaces the secondary mirror:
By easy adapting the Hyper Star system to the Schmidt plate, you can change within a few minutes between the f/1.9 and the f/10 focus of your SC telescope.
Each 6" SC telescope from Celestron is Fastar compatible, so you just need to install the Hyper Star kit.
What is the Hyper Star system and how does it work?
Hyper Star is a multi-lens corrector system which replaces the secondary mirror and corrects for the remaining abbreviations of the main mirror. Coma and field curvature are completely eliminated so you have a wide and flat field for photography. Simply spoken, you get an easy-to-use Schmidt Camera for the digital era.
The Hyper Star's advantages:
-- your old Schmidt Cassegrain is turned into a Schmidt Camera
-- all functions of your telescope remain
-- no expensive special optics are necessary - you have two telescopes in one
-- by the very short exposure times, even alt-azimuthal mounts can be used successfully
-- moderate exposure times are possible even using narrowband interference filters
Effective exposure time savings with the Hyper Star system: In 30 seconds, you achieve the same result as with 12.5 minutes at f/10. So the necessary exposures times are reduced by the factor of 25. Many other distortions caused by seeing or periodic errors of the mount are also reduced. The overall image definition is raised. Alt-azimuthal mounts can be used, too. The field rotation effect does not harm your picture within 30 seconds.
Use of SLR cameras with the HyperStar for 6" SCs:
The HyperStar for 6" SC Telescopes will not work with DSLR Cameras with the standard 45mm distance from the bayonet to the chip. The HyperStar allows only 39,8mm maximum. Cameras with the new "micro 4/3 bayonet will work with the kit becaouse these cameras only have 20mm distance.
-- Effective focal ratio with the Hyper Star: f/1.9
-- Effective focal length: 300mm
-- Usable sensor sizes: up to 16mm diagonal
-- Coatings: multi coatings on every glass/air surface
-- Camera connection: via special factory adaptation
-- Collimation: Via collimation screws
-- Rotation: the camera can be turned by 360° with no loss of focus
-- Dimensions: 81.3x76.2mm (length x diameter)
-- Weight: -- Distance to the focus from end of the hyperstar tube - beginning the connection thread ... 39,8mm
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