本帖最后由 f317lc 于 2018-9-14 11:52 编辑
自从上次入手ADC对我的16寸DOB行星观测带来良好效果后，我又在考虑使用彗差改正镜提升低倍广角目视效果。
调查下有多少朋友用牛反目视会用彗差改正镜的，如果用是什么牌子型号的慧差镜，配合使用效果最好的目镜是啥。
下面收集的一些原始信息太凌乱了，链接很多也不对，有兴趣的朋友可以看我新整理的帖：牛反目视彗差改正镜汇总 http://bbs.imufu.cn/forum.php?mod=viewthread&tid=774789
收集到的一些对比信息
使用容易：
Easy to use in the field: TeleVue and ES 有可调节高度的2寸目镜座，换目镜后可直接调整彗差镜到目镜焦点的距离
Harder: Astrotech (GSO) 需要自己加T2延长圈
Hardest: Baader. 需要自己加T2延长圈，2寸目镜默认直接拧在目镜上（SkyWatch MPCC 1 & 2同样）
The Explore Scientific coma corrector (HRCC) requires about 1.25" of in travel to get to focus and it has a tunable top. 1.06X magnification factor. With a variety of spacers and the 1.25" adapter, the Baader MPCC-III coma corrector would work. 1.00 magnification factor. And with a variety of parfocalizing rings, the GSO/Astrotech Coma corrector would work. 1.10x magnification factor.
倍率影响：
TeleVue 1.15X
Astrotech (GSO): 1.10X
ES: 1.06X
Baader: 1.0X 会带来球差，造成星点变大
SkyWatch MPCC 1 仿Baader
SkyWatch MPCC 2 4片 1.0X
ES HRCCBe aware that you will need an additional in-travel on your focuser of 32mm to get the HRCC to focus.（为了更低得放大倍率，同时保持良好的矫正效果）
It needed 1/4" or more in-focus than the Z10 had available.
巴德MPCC使用一些目镜时需要增加的延长圈长度
http://www.alpineastro.com/optic ... htm#2inch%20configs
Starman105 Apr 2015
Adjusting for eyepieces on the GSO/AT coma corrector:
http://www.cloudynig...coma-corrector/
Setting up the Baader MPCC Mk III:
http://www.baader-pl.../pdf/mpcc_e.pdf
Info on the Paracorr for AP and visual:
http://www.televue.c...61#.VSGsKhoTkoU
Spot diagrams and correction field in the ES HRCC:
http://www.exploresc...-Corrector.html
截图来自https://www.cloudynights.com/top ... n-an-f37-dob/page-2
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