本帖最后由 白羊星座 于 2011-7-4 15:36 编辑
主镜底座,可拆卸后安装散热风扇 注意:照片上采用的是信达 EQ3-D赤道仪,此赤道仪只为拍照用,并不能为190马牛提供稳定的支撑,实际使用时,190/1000 马牛至少需要用到EQ4或者JE160赤道仪,如果要提供长时间跟踪时更高的跟踪精度,则建议采用信达的 HEQ5 PRO 或者更高的 NEQ6 PRO 赤道仪 DESCRIPTIONS | SPECIFICATIONS | | BKMN190
The exciting new Mak-Newtonian from Sky-Watcher is just what astrophotographers and serious visual observers have been looking for.
The Mak-Newtonian design provides large aperture apochromatic performance with exceptional field correction in a compact, affordable package. Compared to a similarly sized Schmidt-Newtonian, the Mak-Newtonian yields a sharper and more constrasty image. Naturally, the Mak-Newtonian is an excellent visual performer, too.
Schott Glass
Sky-Watcher Maksutov-Newtonian Series benefit from the inclusion of Schott glass being used for the positive front Crown element in the objective. Schott is the recognized world leader in glass utilized for precision optical lens systems, including medical instrumentation, and famous-brand camera lenses.
Tube Materials
The optical tube material is rolled steel, powder-coated reflective gloss black with gold fleck accent. The front and back cells are cast-aluminum painted white, or black.
Precision 2” Crayford Focuser is Standard
Optical focus is achieved by means of a mechanically ultra-smooth, backlash-free, precision 2” Crayford focuser-assembly. This focuser offers fine and ultra-fine focusing adjustments.
Recommend for: DEEP SKY OBSERVING |
| [url=]Optical Design[/url] | Mak-Newtonian | [url=]Lens Material[/url] | | [url=]Diameter[/url] | 195mm | [url=]Focal Length[/url] | 1000mm | [url=]Scondary Mirror Diameter[/url] | | [url=]F/ratio[/url] | F/5.3 | [url=]Highest Practical Power[/url] | 380x | [url=]Faintest Steller Magnitude[/url] | | [url=]Resoving Power[/url] | | [url=]Finderscope[/url] | 8x50 | [url=]Focuser diameter[/url] | 2” Crayford focuser+1.25 | [url=]Diagonal[/url] | | [url=]Eyepiece(s)[/url] | | [url=]Mount Type[/url] | | [url=]Slow-motion Control[/url] | | [url=]Counterweight(s)[/url] | | [url=]Piggyback Bracket[/url] | | [url=]Accessory Tray[/url] | | [url=]Ground Board Diameter[/url] | | [url=]Ground Board Weight(s)[/url] | | [url=]Motor Drive[/url] | | [url=]Go-to[/url] | | [url=]Tube Weight[/url] | | [url=]Tube Dimension(dia. x length)[/url] | | [url=]Tripod Height[/url] | | [url=]Shipping Weight[/url] | | [url=]Shipping Carton Dimensions[/url] | 123.5 x38 x 44 cm3 |
Standard accessories may vary.
Contact your local distributor for details |
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