Manufacturer: -TS Zubehör
Product number: TSRedJM63B

EUR 349,00


incl. 19 % VAT (DE)  
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rating: 5.0 of 5
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TS Photoline 0.8x Focal Reducer and Corrector for Refractors from 102 mm Aperture
The corrector increases the speed of your refractor telescope and reduces the focal length for a larger field. The exposure time is reduced to 64%. In addition, the corrector corrects the field and creates pinpoint stars up to the edge of the image.

Adjust the corrector individually to your camera and refractor - no more adapter battle!
An essential part of the corrector is an integrated fine adjustment. By turning the knurled ring on the corrector, you can adjust the distance to the sensor extremely precisely. Once you have reached the desired distance, fix it with the clamping screw. In this way, you can determine the optimum distance via test exposures with the camera connected, without additional adapters and tuning rings. The camera does not rotate during fine adjustment.

The following settings from the innermost position of the adjustment to the sensor are recommended:
aperture 102 mm / focal ratio f/7 - 69.87 mm
aperture 107 mm / focal ratio f/6.5 - 69.0 mm
aperture 130 mm / focal ratio f/7 - 66.17 mm
aperture 140 mm / focal ratio f/6.5 - 65.8 mm
aperture 150 mm / focal ratio f/8 - 63.34 mm
aperture 155 mm / focal ratio f/8 - 62.57 mm


Connection to the telescope:
This Photoline Reducer has a M63x1 external thread on the telescope side. Many focusers already have this thread as standard. Adapters to other threads, such as M68x1, are of course available.

Application example - how to set the distance:
Setting the correct distance is very easy, as we will show in the following example:
Telescope: refractor with 130 mm aperture f/7, thus 910 mm focal length.
Camera: DSLR with 55 mm distance from the M48 thread to the sensor.


The working distance is 66.17 mm according to the table. From this dimension you simply deduct the 55 mm (distance thread to the sensor). This leaves 11.17 mm.

Simply turn the variable adjustment 11.17 mm outwards, this can be easily adjusted by the distance marking. You are now at the optimum distance and can start taking pictures.
Design:Corrector and reducer for refractor telescopes
Telescopic connection:M63x1 external thread
Camera connection:M48x0.75 external thread
Thread for 2" filter:M48x0,75 female thread available
Intermediate thread:M72x1 female thread on camera adapter
Overall height of the camera adapter:5 mm
Reduction factor:0.8 x
Lenses:3 lenses with ED element
Coating:multi-coating and internal blackening
Working distance:variable (adjustable)
Adjustment range of the distance:0-13 mm stepless
Suitable for:Refractor telescopes from 102 mm to 155 mm aperture with focusers from 2.5"
Corrector
Dust caps


Question:
What is the difference between the TSREDJM63B and the TSREDJM63S?

Answer from Teleskop-Service:
Both correctors have a similar optics. The most important differences are:
the diameter of the lenses in the TSREDJM63B is slightly larger
the housing between the corrector and the M48 connector is designed slightly different to provide comfortable working distances for larger refractors



Question:
How do you have to measure the working distance?

Answer from Teleskop-Service:
The working distance is measured from the beginning of the connection thread on the housing of the corrector (see example picture):




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Reviews

Written by Dan Kahraman
on 2022-08-06

"Beautiful product. I use it on the TS-Optics Doublet SD-Apo 150 f/8 FPL53 / lanthanum glass lens - 2.5"" focuser and my camera. Very little vignetting. Stars are pinpoints across the full field of the camera. I use a total of 63mm with the spacers+0.34mm adjustment on the 0.8x FFFR."

Written by Josef Büchsenmeister
on 2021-05-24

Klasse Teil, jeden Euro wert!

Written by rigo plutka
on 2020-11-03

"An dem reducer ist nichts auszusetzen, gute Optik und justierbar."