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Alluna RC 望远镜


Ritchey-Chrétien telescopes with two hyperbolic mirrors convince with their outstanding universal properties. The compact design along with low weight, colour purity, planar field free of coma and astigmatism with 65 mm in diameter. Smallest possible spot diameter up to the outer edges of the image field. All components, optics, mechanics and software meet highest quality standards.
The robust CNC machined Aluminium Carbon Truss tube guarantees high adjustment stability and easy handling. All major tube components feature a complex honeycomb pocket structure, allowing us to realise an extremely lightweight yet higly stable tube. 
Since the Ritchey-Chrétien is a system with two mirrors, it has no chromatic aberration, hence it can be used throughout the entire spectrum from ultraviolet to the long-wave infrared (100nm-12mu). Through the excellent image quality, on-and off-axis, the large usable field and the versatility of a Ritchey-Chrétien system are our RC-telescopes are particularly suitable for being applied in astrophotography and the wide range of astronomical research. The RC telescopes are also a great visual instrument and thus are also well suitable for observatories serving the public.
Alluna Ritchey-Chretien Telescope are designed without compromise on optical and mechanical quality. Moreover, a Alluna Ritchey Chrétien telescope already comes with important components such as the Telescope Control System (TCS) and a high precision secondary mirror focusing.
The high precision focusing of the secondary mirror that is included in delivery allows to connect the 100 mm exit at the back side fixed and absolutely shake/bending-free with the telescope. Instrument loads such as CCD-Cameras or Spectrometer of more than 12 kilograms ask because there is no problem. In special design already implemented instrument loads on the back of more than 30 kg. Contrary to telescopes using a mechanical Focusers at the exit no deflexion or shaky connections through heavy weight of, for example a heavy CCD camera may occur. 
The secondary focuser features a resolution of 3936 digits per 1 mm, corresponding to a mathematical step width of rounded 0.25 on Secondary mirror respectively 0,0019 mm on CCD-Chip !



Alluna RC Optics

Every single mirror set is being manufactured and tested with extreme precision and care in our own production. As a matter of course we deliver a detailed certificate with interferogram with every telescope.
Alluna Ritchey Chretien telescopes can be used with a large usable field without corrector lenses. For large CCD-Cameras a Flat Field Corrector and a Flat Field Reducer is available.

Using the double lens Alluna Flat Field Corrector (AFFC) allow to use a planar field of 65 mm in diameter free of coma and astigmatism for photographic purposes. The usual lens size of 400 to 700 nm has been increased to  400 - 900 nm. You will receive an outstanding and future-proof optics perfectly suitable for bigger 45x45 mm CCD chips of the newest generation, too. Looking through our RC telescopes is visually impressive, the sharp and coma-free picture will convince you and your visitors.

For focal length reduction is a 4 Inch .74 x reducer-corrector (AFFR) available. The focal length is reduced from f8,0 to f6,0. The field is fully corrected of 60 mm

The spot diagram shows the fully corrected and flat 65 mm field which is achieved with the Alluna AFFC corrector. The RMS radius is 32 mm from the optical axis of less than 2 microns. Please note that the box size is only 14.


Basic information about Alluna RC
- Available sizes: 16 / 18 / 20 / 24 inches f 8,0 system  
- Real Ritchey-Chrétien telescope with two hyperbolic mirrors  
- Quality Alluna optics selectable Pyrex or glass ceramics Zerodur 
- Optics interferometrically tested and certified 
- High-quality aluminium coating with SIO protective layer  
- AFFC 4" Field corrector - flattened, coma/astigmatism-free field of 65 mm diameter, annealed 400-900 nm 
- AFFR 4" Reducer Corrector x.74, coma/astigmatism-free field of 65 mm diameter, annealed 400-700 nm 
- Future-proof, also suitable for the bigger CCD chips of the new generation  
- max. spot radius: 1.5 micron rms 25 mm off-axis / 486-656 nm (AFFC) 
- Applicable from ultraviolet to infrared 
- Large-sized back focus area of 355 mm  from mkirror, 250 mm from backplate. 
- weight-reduced, honeycomb structure, warp-resistant carbon / aluminium CNC truss tube  
- easy adjustment and collimations free, Manual 
- vignetting-free through large 4-inch connection and optimized Baffle System 
- Secondary mirror focussing with position memory, automatic focus positioning, automatic focus-drift compensation  
- OneView temperature monitor, automatic fan control  
- Telescope control system for automatically monitoring focus, temperature, robotic Dust Cover, CCD precision rotator on your PC Info 
- Ready for image field rotator  Info 
- Only one USB cable for controlling the entire telescope, ASCOM interface  
- absolutely high-quality optics, mechanics and software; Complete manufacturing " Made in Germany "

Alluna RC望远镜技术参数
Alluna RC 16
Alluna RC 18
Alluna RC 20
Alluna RC 24
主镜
16寸/415毫米
18寸/465毫米
20英寸/515毫米
24寸/610毫米
最大焦比(f3.0)
f3,0
f3,0
f3,0
f3,0
焦比
f8,0
f8,0
f8,0
f8,0
次镜直径
158毫米
166毫米
185毫米
215毫米
次镜遮挡率(%)
 40
39
39
37
后焦距
353毫米
350毫米
355毫米
355毫米
重量(公斤)
46公斤
60公斤
79公斤
120公斤
Correctoren:
RC (f8.0)改正镜:65mm
2片95毫米 
M100x1
2片95毫米 
M100x1
2片95毫米 
M100x1
2片95毫米 
M100x1
RC (f8.0-f6.0)减焦镜:60mm
3片93毫米 
M100x1
3片93毫米 
M100x1
3片93毫米 
M100x1
3片93毫米 
M100x1


可选配件


 Field-Corrector-RC-AFFC

Alluna  AFFC平场改正镜
65毫米
宽带涂 400-900纳米!
双镜头视场改正百毫米
后焦距百毫米
连接M100x1
的Alluna RC 16,18,20和24英寸
和其它RC望远镜F8

Alluna RC减焦镜   
减速校正.74x
平场60毫米
宽带涂400-700纳米
三个镜头93毫米,
后焦距90毫米
连接M100x1
用于Alluna RC16,18,20和24英寸
和其它RC望远镜F8


主镜电动镜盖
电机开关控制器
望远镜TSC控制系统
防尘

望远镜支架

Alluna RC teleskope设计前叉座

 tubus-color

主镜镜筒 (白色标准版,黑色为碳筒)
白色标准版,不额外收费标准 
碳筒需要附加费


主镜及次镜
主次镜由玻璃陶瓷微晶玻璃制成
 montageplatte-ap1200

导轨:
符合RC导轨如有:
AP 1200, AP 3600GTO, 10 Micron GM3000, 10 Micron GM4000, ASA DDM 85, ASA DDM160, Eckhardt Alt, Paramount ME

4寸电动调焦座
通过望远镜控制系统TCS控制
自由口 90毫米 
连接M100x1 
用于RC16,18,20和24
 huelsensatz

延长筒
螺纹M100x1

 huelse100

转接环M100x1
长度:
H10 /10mm     H20 /20mm
H25 /25mm     H40 /40mm
H50 /50mm

 off-axis-guider-100mm

离轴导星器
连接M100x1
自由口90毫米,
90度旋转
1 4英寸调焦
作为一个附加特征允许
离轴导向器望远镜的360度旋转的连接配件,如例如CCD照相机。


转接环M100x1转蔡司M68x1


 reduzierung-100-auf-68 (1)

转接环M100x1转高桥M72x1

 focuser-rc

100X1转2寸目视调焦座

光轴准直器
RC卡塞格林望远镜。 
高桥准直范围内使用适配器M36,4到Alluna M100x1 
简单,调整方便

 Transportboxen-0

RC望远镜 包装木框

 
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