RCC I, Rowe Coma Corrector

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RCC I, Rowe Coma Corrector

# 2956800

€ 169.00 Price excl. German VAT tax (19%): € 142.02
  • The RCC I (Rowe Coma Corrector) is a Coma Corrector from Dave Rowe with Triplet Lense design for f/4 Newtons
  • The RCC works from f/3.5 to f/6 - it is perfect on f/4
  • Coma Corrector with backfocus 91,5mm
  • reproduction scale is 1:1 - in contrast to many other coma correctors, the RCC is no Barlow lens which rely 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

Product Questions

Where can I find the documentation for the RCC-I?
At least a drawings showing where to measure the 91.5 mm back focus would be helpful.
-1
Question by: jc on Mar 31, 2017 6:16:00 PM | 2 Answer(s)
Description

Details

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 rely 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 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 (optimised 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 x 0.65_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"
Specifications

Additional Information

Manufacturer Baader Planetarium
SKU (#) 2956800
Weight (kg) 0.219
Inner Connection (lens sided) Thread, M48
Outer Connection (lens sided) Barrel, 2"
Outer Connection (eyepiece/-camera-sided) Thread, T-2 (M42 x 0,75), M48
AR-Coating Phantom Coating® Group
Optimized for focal ratio f/4
Working Range f/3.5 – f/6
Image Scale 1:1
Barrel Size (in) 2"
Optical Design Coma Corrector
compatible telescopes Newton
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