Home -> Products -> Telescopes -> Astronomical Telescopes -> ASTELE™ 203MN

Äîêóìåíò âçÿò èç êýøà ïîèñêîâîé ìàøèíû. Àäðåñ îðèãèíàëüíîãî äîêóìåíòà : http://www.lomoplc.com/Astele203.htm
Äàòà èçìåíåíèÿ: Unknown
Äàòà èíäåêñèðîâàíèÿ: Sat Apr 9 23:01:19 2016
Êîäèðîâêà:

RECREATIONAL TELESCOPES		SPOTTING SCOPES		ASTRONOMICAL TELESCOPES
TELESCOPE ACCESSORIES		PROFESSIONAL TELESCOPES

HOME

NEWS

ABOUT LOMO

PRODUCTS

• MICROSCOPES

• TELESCOPES

• NIGHT VISION DEVICES
• SCIENTIFIC APPARATUS
• OEM OPTICAL COMPONENTS
• CAMERAS
• SURGICAL MICROSCOPES
• ENDOSCOPE
• MILITARY AND AEROSPACE EQUIPMENT

WHERE TO BUY

Home -> Products -> Telescopes -> Astronomical Telescopes -> ASTELE™ 203MN

ASTELE™ 203MN (Astronomical Telescope)

COMING SOON...

The ASTELE™ 203MN is a Maksutov Newtonian with a built-in finder (US Pat. # 6,172,806 B1). The finder objective lens is attached to the telescope's meniscus corrector by a ultra-precision rotating housing.

This housing allows rotation between the telescope and the finder. Whatever eyepiece you're using at the time is your finder eyepiece. So, you can have a low-power finder or a high-power finder depending on which eyepiece you have in the ASTELE™ 203MN. When you want to view through the telescope, you rotate the housing 180°, and vice versa for the finder. When you're doing photography, (35 mm or CCD), you can photograph through the finder before or after you take an image of your subject. This will give you a wide-field perspective of the area you're photographing.
Another great thing about the ASTELE™ 203MN is its optics. The ƒ-ratio in the ASTELE™ 203MN is 4.6, so, unlike telescopes with much longer ƒ-ratios, you're able to use low magnification (37 X, 2.3° with the 25 mm PlÆssl eyepiece) which produces bright images and wide fields of view for those dim galaxies, nebulae, and very large star clusters, but the ASTELE™ 203MN does an outstanding job on the moon, planets and double stars, too. Diffraction limited optics are multi-coated. The superb optics in the ASTELE™ 203MN make it a great instrument for doing astrophotography as well, delivering pin-point images over a 35mm format.
If you're looking for a telescope that's easy to setup, very portable, fun to use and has superb optics, look no further. Ideal for the beginner or the advanced amateur.

The ASTELE™ 203MN is available in two models:

The ASTELE™ 203MN OTA (Optical Tube Assembly)
The ASTELE™ 203MN G (German Equatorial Mount, shown)

The ASTELE™ 203MN G comes with: slow-motion controls, setting circles, polar axis finder, accessory tray and fully adjustable aluminum tripod.

Optical Tube and Cells are made from aircraft-grade aluminum
Photo adapter for standard cameras and lens shade are available separately.

SPECIFICATIONS	ASTELE™ 203MN OTA	ASTELE™ 203MN G
Optical Design	Maksutov-Newtonian	Maksutov-Newtonian
Optical Diameter:	203 mm (8")	203 mm (8")
Focal Length:	927 mm (36.5")	927 mm (36.5")
F-Ratio:	f/4.6	f/4.6
Resolving Power (arc sec)	0.6	0.6
Optical Coatings	Multi-coated	Multi-coated
Maximum Practical Visual Power • with 25 mm eyepiece • with 10 mm eyepiece	400 X 37 X 92.7 X	400 X 37 X 92.7 X
Viewfinder (internal with 25 mm eyepiece) • Light Diameter • F-ratio • Focus Length • Magnification: with 25 mm eyepiece with 6.5 mm eyepiece with 4 mm eyepiece • Field of View	38 mm (1.5") 1:9.9 375 mm (14.8") 15 X 57.7 X 93.7 X 6°	38 mm (1.5") 1:9.9 375 mm (14.8") 15 X 57.7 X 93.7 X 6°
Viewfinder (internal with 25 mm eyepiece)	15 x 38 mm	15 x 38 mm
Optical Tube Dimensions (diameter x length)	265 mm x 975 mm (10.4" x 38.4")	265 mm x 975 mm (10.4" x 38.4")
Secondary Obstruction	29.5 %	29.5 %
Main Mirror • material • surface quality	BK7 optical glass / 6	BK7 optical glass / 6
Meniscus • material • surface quality	Pyrex glass / 6	Pyrex glass / 6
Eyepiece Holder:	2" (1.25") / 5.08 mm (31.7 mm)	2" (1.25") / 5.08 mm (31.7 mm)
Focusing Range	50 m (66') – infinity	50 m (66') – infinity
Mounting Type	¼ x 20	German-type equatorial
Tripod	optional	Aluminum w / GEM (A9029)
Total Telescope Net Weight:	12.5 kg (28 lb)	N/A

	Suggested Retail Price:
	$2,649.95	$3,349.95

Home -> Products -> Telescopes -> Astronomical Telescopes -> ASTELE™ 203MN

For more information please contact us at:
LOMO America, Inc.
3130 Commercial Ave, Northbrook, IL 60062
Tel.: (847) 215-8800, Fax: (847) 215-9073
E-mail: info@lomoamerica.com