本帖最后由 itelescope 于 2012-6-14 18:58 编辑
也许国内很少人听说过这款赤道仪,但是它确实是比较有创意并且在合理的价格上提供了很高的性能!
和我们熟悉的赤道仪不同,G53F没有使用传统的蜗轮蜗杆来进行传动,而采用了摩擦传动方式。这种方式的好处是:
1. 更高的精度,http://www.astronomy.hu/ENG/images/60min_ung.jpg
this image is at 1,5"/pixel resolution, 60 minutes. This kind of precision is impossible with gears.
2.驱动部件是钢的,当你触碰望远镜的时候,你感觉好像碰到了一怔块铁一样
3.没有回差, 参看下图:
4. goto速度快,低噪音,低能耗(使用电池的时候这点很重要)
当我问及设计者,这样会不会产生磨损问题的时候,András说:
涡轮和蜗杆的磨损才更加严重呢,我模拟了6年正常使用赤道仪的强度测试, 结果很好。 我的传动轴采用非常坚硬的钢材,并且镀上了一般制作工具的时候使用的涂层,除非你把它至于高温下,否则它不可能损坏。退一步讲,即使驱动头损坏了,用户也可以非常容易自行更换,根本不详蜗轮蜗杆一样要仔细调节空程。
看看这个赤道仪的各项指标吧:
- Integrated slip clutches, encoder based friction drive system
- Can be separated in two parts (4 screws), the total weight is 20 kg
- 45 kg payload
- Integrated Losmandy rail interface (exchangable)
- Sidereal, Lunar, Solar and 3 custom tracking rates
- Up to 7 deg/sec GoTo speed
- Accurate 12x30 polar finder with illumination (optional)
- LX200 (most commands), PemPro and ASCOM compatible
- Reference stars, M, NGC, IC, Pk and custom programmable database
- Smart meridian flips (for robotic mode and efficient goto)
- Parking also via external switch (cloud detector) - when the PC breaks down
- Real time refraction correction (for tracking and goto)
- 12VDC operation, 1A consumption
- GPS connection for time and geographical position download (optional cable needed)
- Real time PEC with encoder (to be added, please inquire)
- Free firmware updates, language versions
- 5 years of warranty for mechanical parts, 2 year for electronics
- Absolute position reference for recovery after system breakdown
- 3 star Polar Alignment Aid (Alignmaster by Matthias Garzarolli)
官网:
http://www.astronomy.hu/ENG/g53f_eng.html
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