第一次买望远镜, 问EQ3和EQ4的区别...

小弟最近想购入一台天文望远镜，由于是第一台，所以满足基本需求即可。于是四处打听。本人在瑞士，当地的经销商向我推荐了以下两款：
Omegon Telescope N 150/750 EQ-3和Omegon Telescope N 150/750 EQ-4，价格分别是290瑞士法郎（大约人民币2000元）和360瑞郎（人民币2500元）。

这两款的光学性能完全一样，都是150/750，分辨率0.77。惟一的区别就是赤道仪，一个是EQ3一个是EQ4，也因此产生了大约500元人民币的差价。我的问题是：
1. 这两款确实值得购买么？
2. 赤道仪EQ3和EQ4到底有多大区别，有没有必要多上500元上EQ4呢？

这个命名有时会很混乱，最好把图都发上来

楼主的镜子全套有多重呢，EQ3 承重7.5KG，EQ4 承重10KG。    EQ4后期升级大主镜会选择大一些。

附件里的图是两个性能参数的比较，左边是EQ3，右边是EQ4

happyrobbie 发表于 2012-3-23 17:50

                               
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附件里的图是两个性能参数的比较，左边是EQ3，右边是EQ4

你这个并没有提到赤道仪的性能，发个图吧。

发个台架的图吧

Wenn du astronomiefotografieren möchte, musst du EQ-4 kaufen. Wirklich ist es besser als EQ-3 für großer Teleskopen.

不过倒是可以看出国内的镜子都好贵。看楼主说的镜子十分可能就是信达代工的，就是国内的小黑。但是人家加上极轴镜和电跟的EQ-4才2500。国内早就4000以上了。天朝人民生活在水深火热之中。

赤道仪还蛮重要的，只差500，还是上EQ4

EQ3你是新手过两年你肯定要换的没必要

我的是EQ7，EQ3的升级版，赫赫，还是用EQ4吧，有升级空间。

Vik!ng_Sail 发表于 2012-3-24 06:09

                               
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不过倒是可以看出国内的镜子都好贵。看楼主说的镜子十分可能就是信达代工的，就是国内的小黑。但是人家加上 ...

那个是天狼版或者智通版的啊 主镜的做工也很烂 这样还算便宜！！！！

能有信达版的最好吧  在这个价位

图如下，左边是EQ3，右边是EQ4


关于这两个望远镜的赤道仪具体的介绍，只有一些文字描述：

The EQ-3 mount:
This parallactic mount allows you to accurately aligning the optics to the Pole Star. The correct polar height and geographical latitude can be set for any observation location. The slow motion controls for the RA and DEC axes allow objects to be adjusted precisely, tracked and held in the field of view. A counterweight provides exact counterbalancing of the optics.
The EQ-3 mount provides a solid base for most small to medium size optics and is excellent for fascinating excursions through the night sky. Drive motors are available for automatically guiding the EQ-3 mount, which also allows any first attempts atastrophotography. The aluminium tripod is extendable and can be set to a height of 71cm to 121cm; an accessory tray provides a place for eyepieces and other accessories.

The mount comes with:

• robust aluminium tripod (height adjustable from 71cm to 121cm)
• accessory tray
• counterbalancing counterweight
  

EQ-4:

EQ-4 mount:

The parallactic EQ-4 mount is a solid base for your telescope optics. This telescope mount lets you acquire any point in the night sky and then easily track it. With slow motions for both right ascension and declination axes, objects can be precisely adjusted, tracked, and held in the field of view. A counterweight takes care of exact counterbalancing of the optics.

The built-in polar finder scope and very sturdy polar block means starting astrophotography is a piece of cake. You do not simply find the Pole star, but can find the invisible north celestial pole itself within just a few minutes. The aluminium tripod can be simply adjusted to the required height. Your telescope can be accurately levelled with the assistance of the built-in spirit level.

The differences to the Omegon EQ-3 mount:

• The EQ-4 is significantly more stable
• significantly less susception to vibration
• sturdier counterweight bar
• spirit level built in
• significantly sturdier polar block
• finer adjustment possible in azimuth
• only the EQ-4 has a polar finder scope
•