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TS-Optics 2" CCD Reducer 0.67x for RC , Refractors and Maksutov-Cassegrains

Name: TS-Optics 2" CCD Reducer 0.67x for RC , Refractors and Maksutov-Cassegrains
Brand: -TS Zubehör
SKU: CCD47
Price: 254.9 EUR
Rating: 5 (2 reviews)

The 2" CCD compressor reduces the focal length of telescopes with the factor 0.67x, thus allowing significantly shorter exposure times.

The focal reducer is ideally suited for Ritchey-Chretien telescopes.

It also works well with Celestron EHD or Meade ACF telescopes, Maksutov Cassegrains or with refractors from f/8 or slower, if sufficient backfocus is available.

The image field of DSLR cameras up to APS-C format is illuminated - full illumination up to 29 mm

Easy connection to the telescope via 2" barrel

Optimal working distance from the M48x0.75 thread to the camera sensor is 85 mm - enough space for accessories like off-axis guider or filter wheel

2" filter thread at the telescope side

Manufacturer: -TS Zubehör

Product number: CCD47

EUR 254,90

incl. 19 % VAT (DE)

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excl. 6.95 € shipping costs (DE)

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rating: 5.0 of 5

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TS-Optics 2" CCD Reducer 0.67x for RC , Refractors and Maksutov-Cassegrains

The 2" CCD compressor reduces the focal length of telescopes with the factor 0.67x, thus allowing significantly shorter exposure times.

The focal reducer is ideally suited for Ritchey-Chretien telescopes.

It also works well with Celestron EHD or Meade ACF telescopes, Maksutov Cassegrains or with refractors from f/8 or slower, if sufficient backfocus is available.

The image field of DSLR cameras up to APS-C format is illuminated - full illumination up to 29 mm

Easy connection to the telescope via 2" barrel

Optimal working distance from the M48x0.75 thread to the camera sensor is 85 mm - enough space for accessories like off-axis guider or filter wheel

2" filter thread at the telescope side

Details..
Technical data..
In the box..
Reviews..
FAQ..
Manufacturer infos..
Safety informations..

TS-Optics CCD telecompressor for Ritchey-Chrétien and other telescopes with f/8 or slower

The TS Telecompressor CCD47 has been developed for reducing the focal length of RC (Ritchey-Chrétien) telescopes. However, practical tests have shown excellent suitability for other telescopes, such as refractors with sufficient back focus, Celestron EHD or Meade ACF telescopes, and Maksutov Cassegrains with primary mirror focusing and 2? connection at the eyepiece. However, we particularly recommend the compressor for GSO / TS Optics / AstroTec Ritchey-Chrétien telescopes.

Astrophotographic results obtained with this focal reducer on Astrobin

Here you can find some astrophotographs made with this focal reducer model: Link to Astrobin

The features of the CCD47 telecompressor:

Barrel size is 2" - easy connection to all focusers with 2" receptacle

With thread for 2" filters at the telescope side

Camer aconnection via M48x0.75 thread

Optimal working distance from the connection thread: 85 mm to the camera sensor. Between 70-90 mm, the results are very good.

Reduction by 0.67x - an RC with F/8 changes to fast f/5.3. A telescope with f/10 still turns into f/6.7. The exposure time will be more than halved!

An illuminated image field of 29 mm allows using all camera sensors up to APS-C format.

Adapter recommendations:

With the long working distance, adaptation of all common cameras, no matter whether CCD or DSLR, is possible without any problems. Some examples of applications:

DSLR camera - adaption via M48: TSVF230 and then the matching adapter from M48 to the camera, like the SKM48-EOS for connecting a Canon EOS

CCD cameras via T2 connection: two adapters are possible for reducing the M48 thread to T2:

TSFA2 - adapter to T2 with 38.2 mm length. This is used for bridging optical path.

TSM48-T2 - a short adapter with only 3.5 mm length. This is applied if accessories like off-axis guider and filter wheels should be used.

Visual application of the reducer:

The CCD47 is mainly made for photography when it comes to increasing the light intensity. Visually, the reducer can be used straight on. It will also work with a 1.25“ star diagonal mirror, the corrector is then inserted into the reducer from 2” to 1.25”, in front of the star diagonal mirror. It will not work with 2” star diagonal mirrors because the distance from the reducer to the eyepiece will be too great.

Barrel size:	2"
Filter thread:	2" filter thread at the telescope side
Camera connector:	M48x0.75 thread (male, 5 mm long)
Body length:	29.2 mm (w/o male thread)
Working distance:	Between 70-90 mm - optimal results are achieved at approx. 85 mm
Factor:	0.67x
Clear aperture:	44 mm
Coating:	Best possible coating - guaranteed no reflexes or ghost images
Illumination at f/8:	D=29 mm fully illuminated

TS CCD47 Telecompressor

Astrophotographic results obtained with this focal reducer on Astrobin

Here you can find some astrophotographs made with this focal reducer model: Link to Astrobin

Testimonial and example image of our customers Florian Stürzer and Simon Stich aka galacticdudes

The two dedicated amateur astronomers from Grafing tried out the RC TSRC6M with the reducer CCD47, using a modified Canon EOS 60D. A test report is available as PDF here, we show a successful picture here:

Cone Nebula (NGC 2264)
Photographers: Florian Stürzer and Simon Stich
Telescope: TS 6" RC TSRC6M on mount Orion Atlas EQ-G
Imaging camera: Canon EOS 60D
Reducer: TS CCD47
Filters: RGB and Baader H-alpha 7 nm narrow band filter
Sensitivity: ISO 800/30° for RGB, ISO 1600/33° for H-alpha
Frames: 33x 600 s for RGB and 28x 600 s for H-alpha

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):

Manufacturer / Importeur:	Teleskop-Service Ransburg GmbH
Street:	Von-Myra-Str. 8
ZIP / City:	85599 Parsdorf
Country:	Germany
Telefon number:	+49 89 99228750
Email:	info@teleskop-service.de
Website:	www.teleskop-express.de

Safety informations: PDF Download

Recommended accessories

Adaptors

TSFA2

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TSM48-T2

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SKM48-Nikon

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SKM48-EOS

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Cleaning & Collimating

CleanerKit

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EUR 9,98

Blasebalg

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EUR 9,90

BA2905009

Baader Baader Optical Wonder Set - Cleaning Fluid and Cloth

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Reviews

Written by Walter Schramböck
on 2023-12-06

Auf der Suche nach einem Reducer für meinen Maksutov bin ich über dieses Teil hier gestolpert. Nach ersten Tests kann ich sagen: er passt ganz hervorragend zu meinem Skywatcher Skymax 180!
Die Sterne sind in allen Ecken rund, meine Suche hat ein Ende, kann diesen Reducer sehr empfehlen!

Written by Michael Czybor
on 2023-09-07

"Das Preis-Leistungsverhältnis ist sehr gut. Die Reduktion der Brennweite eröffnet weitere Anwendungsfälle."

Written by Michael Geissel
on 2023-04-28

"Ein notwendiges Hilfsmittel für die Astrofotgrafie mit dem RC."

Written by Norbert Reuschl
on 2022-06-05

"Wir verwenden den 0,67x Recucer an einem 20 Zoll F/8.5 RC. Abbildung an APSC ist bis in den Ecken gut. Der Arbeitsabstand von 85mm ergibt genau 0,67x Reduzierfaktor (am Sternfeld nachgemessen). Eingeschränkt auch mit Vollformat-Kameras verwendbar (unbedingt Flats verwenden)."

Written by Alfonso Montagnaro
on 2022-04-19

"Works fine on my Mead 8"" ACF"

Written by Andre Heidemann
on 2022-04-02

"Guter Reducer. Passt perfekt für das RC f8 von TS."

Written by Vedran Bebic
on 2021-08-14

"Gute Qualität. "

Written by Gideon Golan
on 2021-08-08

Excellent reducer for your RC scope!
Drops down by 0.67 factor, and making catching light much faster. Flat field if you´re already properly collimated.

Highly recommended for extra versatility in F/L.

Written by Dirk Fahrendholz
on 2018-05-10

"Guter Reducer"

Written by Guenther Eder
on 2017-11-21

"entspricht den Angaben"

Written by Dirk Fahrendholz
on 2017-06-01

"Ideal für Meade 8"" ACF."