JTSCOPE
| Refractor short focus / RFT (rich field telescope) |
RFT-102 Altazimuth
This Sky-Watcher 102mm (4") f/5 telescope is a two-element,
air-spaced, fully multi-coated objective, achromatic refractor, which can
give exciting "rich field" astronomical views. It can provide excellent
vistas of star fields, clusters, nebulae, galaxies, planets, the Moon and
(with correct filtering or by projection) the Sun. It is also a fine terrestrial
telescope when mounted on an alt-azimuth mount or a photographic
tripod. Crisp images at a reasonable price make it an excellent
beginner's "first telescope", or a great travelling telescope for a more
advanced observer. Similar to the popular 80mm f/5 refractor, this larger
aperture model has more light collecting power at the same focal ratio
and accepts 2" diagonals for awesome wide field views, while only a
small amount to chromatic aberration and weight. Weighing about 3kg.
(6.5lbs.) the optical tube assembly is readily carried and with a
compressed length of approximately 50cm (21.7") it is easily
transported.
Being a refractor, it is quick and easy to set up and the low-
maintenance, enclosed optics come fully collimated from the factory.
The optical tube assembly comes with "tube-mounting rings". These
hinge open to allow easy installation of the optical tube and the locks
can be loosened during use to allow tube rotation and balancing.
Mounting the telescope on an alt-azimuth or an equatorial mount is
quick and simple with the appropriate mounting plate.
This telescope also performs well as a fixed aperture, 510mm lens for
both terrestrial and astro photography. The "fast" f/5 focal ratio,
combined with today's high speed films, is excellent for capturing lunar
and solar eclipses as well as for nature photographs. A solid,
equatorial mount and a method of guiding is required for longer
exposure astrophotography. A T-mount thread on the eyepiece holder
allows direct attachment of an appropriate T-adapter (readily available
through camera shops for a specific SLR) and the optional 60mm (2.5")
extension tube gives closer focussing for terrestrial photography.
This Sky-Watcher 102mm (4") f/5 telescope is a two-element,
air-spaced, fully multi-coated objective, achromatic refractor, which can
give exciting "rich field" astronomical views. It can provide excellent
vistas of star fields, clusters, nebulae, galaxies, planets, the Moon and
(with correct filtering or by projection) the Sun. It is also a fine terrestrial
telescope when mounted on an alt-azimuth mount or a photographic
tripod. Crisp images at a reasonable price make it an excellent
beginner's "first telescope", or a great travelling telescope for a more
advanced observer. Similar to the popular 80mm f/5 refractor, this larger
aperture model has more light collecting power at the same focal ratio
and accepts 2" diagonals for awesome wide field views, while only a
small amount to chromatic aberration and weight. Weighing about 3kg.
(6.5lbs.) the optical tube assembly is readily carried and with a
compressed length of approximately 50cm (21.7") it is easily
transported.
Being a refractor, it is quick and easy to set up and the low-
maintenance, enclosed optics come fully collimated from the factory.
The optical tube assembly comes with "tube-mounting rings". These
hinge open to allow easy installation of the optical tube and the locks
can be loosened during use to allow tube rotation and balancing.
Mounting the telescope on an alt-azimuth or an equatorial mount is
quick and simple with the appropriate mounting plate.
This telescope also performs well as a fixed aperture, 510mm lens for
both terrestrial and astro photography. The "fast" f/5 focal ratio,
combined with today's high speed films, is excellent for capturing lunar
and solar eclipses as well as for nature photographs. A solid,
equatorial mount and a method of guiding is required for longer
exposure astrophotography. A T-mount thread on the eyepiece holder
allows direct attachment of an appropriate T-adapter (readily available
through camera shops for a specific SLR) and the optional 60mm (2.5")
extension tube gives closer focussing for terrestrial photography.
| Optical Design Achromatic Refractor Lens Material: Achromat doublet Diameter 102mm Focal Length 500mm Scondary Mirror Diameter n/a F/ratio F/5 Highest Practical Power 204x Faintest Steller Magnitude 13.1 Resoving Power 1.13 Finderscope Red Dot Finder*/9x50mm optic finder Focuser diameter 2” with 1.25” adapter Diagonal 45º Erect Image* Eyepiece(s) 1.25” Super 25 and 10* Mount Type Alt-Azimuth Slow-motion Control Vertical & Horizontal Counterweight(s) n/a Piggyback Bracket Yes Accessory Tray Wall-to-wall Ground Board Diameter n/a Ground Board Weight(s) n/a Motor Drive n/a Go-to n/a Tube Weight 2.53 Kgs Tube Dimension(dia. x length) 10cm x 47cm Tripod Height 71-123cm Shipping Weight 15.2Kgs Shipping Carton Dimensions 96.5 x 45 x 26 cm3 |
SPECIFICATIONS:
| Model RFT-102mm Altazimuth Special price (Rp. 3.500.000,-) |
| Tersedia model RFT-120mm Altazimuth. Special price (Rp. 4.800.000,-) |
* Di gambar yang tertera RFT ini memakai red dot
finder, di paket yang akan kami delivery adalah
dengan memakai optic view finder 6x30mm untuk
RTF-102 dan 9x50mm untuk RFT-120.
finder, di paket yang akan kami delivery adalah
dengan memakai optic view finder 6x30mm untuk
RTF-102 dan 9x50mm untuk RFT-120.
