查看完整版本: 各位高人能否讨论一下RC-250AS

各位高人能否讨论一下RC-250AS

Make: Astrotech Engineering
,{I@.@hK*_"z6N Model: RC-250AS
X/d/y0q-CBd` Nsj:O/UV
Aperture: 250mmmsb+ce3n
Focal ratio: f/8
N"B6G9ryNo Optics: Astrosib2T"H{F9h[VkS
Construction: Tuber{'i3y)Dg]|

_pe-e6u^ 10" f/8 A&M Ritchey-Chretien in CNC aluminum tube, Astrosib optics, focusing via moving secondary on precision slides, rigid ventilated rear cell and 3 fans with on/off and speed controls.
1R}7BPlgO s\.X:J&D5d
L variants come with LK7(Russian Pyrex)primary mirrors. S variants come with Astrosital(Russian Zerodur)primary mirrors.
7i e#B`!c(R tE
2j'}eRBp9y1zbx(j'M [url]http://www.tetontelescope.com/index.php?cPath=53_9_83[/url]

没什么好讨论的 am的rc 看价格 看片子就知道是顶级了
2Z0J$w'h;F am这个牌子可以放心买 而且产自意大利的镜筒 犹如意大利精美的跑车

应该略逊于RCOS和OGSbbbb20

呵呵
,M2If {#F)r1tkz 和ogs谁好谁坏还真不好说

回复 4# 的帖子

价格貌似OGS的RC最高，最便宜也要15000美金，普遍十几到几十万以至百万美金bbbb16^4t5jfrh iO%{
T}~,W/^Ekx
[[i] 本帖最后由 siqingtan 于 2008-8-17 17:16 编辑 [/i]]

[color=dimgray][/color]
6{-E q:Xo)i-Q
2{,?(j!oJ/W`#t1`
Sd,k zr2h$aM WW [b][size=5][color=dimgray]OGS Ritchey-Chretien 14.5 in f/7.9 Telescope & CCD Cameras[/color][/size][/b]T`9^/IF
[b][size=5][color=#696969][/color][/size][/b]
*Cv[%mT7m;K'T [b][size=5][color=#696969]照片：[url=http://www.astroimages.com/ccd_gallery.htm]http://www.astroimages.com/ccd_gallery.htm[/url][/color][/size][/b]

[b][size=4]M64, Blackeye Galaxy:  [/size][/b][font=Arial][size=3]OGS 14.5" RCT at f/7.9;  [/size][/font]
+pF#y+VV}6lA [font=Arial][size=3]Luminance: ST10E bin 1x1; 300s X 26__Color: FLI-DM; [color=#ff0000]R[/color] 300s X 4: [color=#00ff00]G[/color] & [color=#0000ff]B[/color] 450s X 4[/size][/font]
DzI7Z8C3I@e kBEWjvt
[[i] 本帖最后由 siqingtan 于 2008-8-17 17:25 编辑 [/i]]

[b][size=4]M81 in Ursa Major:[/size][/b] OGS 14.5" RCT at f/7.9; 0|s!fJ,c$av-]
Luminance: ST-10E bin 1x1; 300s X 25__Color: FLI-DM; [color=#ff0000]R[/color] 11 X 195s: [color=#00ff00]G[/color] & [color=#0000ff]B[/color] 11 X 300s

[align=center][font=Arial][size=3][b]M51 and NGC5195, Interacting galaxies in Canes Venatici[/b]: OGS 14.5" RCT at f/7.9;  STL-11000M, LRGB = 210:80:80:80 minutes. [/size][/font][/align][align=center][font=Arial][size=3] Total exposure time 7.5h[/size][/font][/align]

这个价格嘛bbbb60

这片真牛！bbbb81

嘿嘿 拍摄深空  rc是首选 :victory: