Description
- The RCC I (Rowe Coma Corrector) is a Coma Corrector from Dave Rowe with Triplet Lens design for f/4 Newtons
- The RCC works from f/3.5 to f/6 - it is perfect on f/4
- Coma Corrector with back focus 91,5mm
- reproduction scale is 1:1 - in contrast to many other coma correctors, the RCC is no Barlow lens which relies on magnification to make the larger back-focus to the sensor possible
- The RCC is the only coma corrector which gives you enough back-focus for filter wheels or other accessories without changing the focal ratio
Der RCC I – Coma-Correktor
The RCC I is designed to correct Coma in fast Newtonian imaging systems. It provides a long back-focus of 91.5 mm measured from the T-2-thread, enabling the use of Off-Axis Guiders, Adaptive Optics and Filter Wheels. Autoguiding can be done easily with the RCC, an RCC Off-Axis Guider, and an Autoguiding Camera.
- The RCC works from f/3.5 to f/6 - it is perfect on f/4
- reproduction scale is 1:1 - in contrast to many other coma correctors, the RCC is no Barlow lens which relies on a magnification to make the larger back-focus to the sensor possible
- The RCC is the only coma corrector which gives you enough back-focus for filter wheels or other accessories without changing the focal ratio
To attach the RCC directly to a camera (without an Off-Axis-Guider), we recommend the VariLock 46 T-2 Extension (# 2956946, T-2 part-no. #25V). It has got not only a graduated mm-scale but also a marking at 36.5mm, to show you the perfect working distance for a DSLR with a T-2-adapter. Each air/glass surface of the triplet RCC optical system is coated with our Phantom Group Coating (R) for the best possible transmission.
You can remove the stopper ring to place the RCC deeper inside of your focuser.
Technical Data - Overview
- reproduction scale: 1:1
- recommended focal ratios: f/3.5 - f/6 (optimized for f/4)
- Focal position (perfect distance to the sensor): 91.5 mm measured from the T-2 thread / 94.5 mm from the M48 thread
- inner connection (lens side): 2" nosepiece with M48_i filter thread for 2" eyepiece filters
- outer connection (telescope side): T2 (M 42 x 0.75_a; without the stop ring M 48_a)
- longest overall depth: 73 mm / without the stop ring 75 mm / without the stop ring and RCC Off-Axis Guider 84mm
- Diameter of the housing: 50.8mm/2"
