TS-Optics Reducer Corrector f/6.3 for Schmidt Cassegrain Telescopes
High-quality field corrector and focal reducer for Schmidt-Cassegrain telescopes from Celestron and Meade.
Simple adaption - the reducer is directly screwed into the 2" SC thread of the SC telescopes. The focal length is multiplied with the factor 0.63 - thus exposure times are shortend by a factor of 2.5! The curved image area of the SCTs is flattened, so you get sharper stars over the entire frame. The TS Focal Reducer can be excellently used photographically and visually. The corrected image area has 24 mm diameter. Long working distance of 85 mm from the SC thread at the camera side - enough space for all adaptions. Attention due to tolerances in the SC threads not every connection adapter fits - more detailed info in the article description
- Details..
- Technical data..
- In the box..
- FAQ..
TS Optics f/6.3 Reducer and Corrector for Schmidt-Cassegrain Telescopes
This high-quality corrector system was especially developed for SC telescopes. With this 4-element system, you can make a fast telescope for astrophotography out of your SCT.
Features and applications of the TS f/6.3 SC Corrector:
The corrector fits to all Schmidt-Cassegrain telescopes from Celestron and Meade. It is simply screwed to the 2" thread at the back of the telescope. At the eyepiece side, the f/6.3 corrector also has the SC thread. You can use your accessories as before. The optimal working distance from the SC thread of the corrector is 85 mm. You can exceed or under-run this distance by 15% without appreciable loss of quality. The focal length of the SC telescopes is reduced with the factor 0.63 - 2000 mm become 1260 mm focal length. The speed is considerably increased. You achieve the same saturation with only 40% exposure time, compared to the photography without corrector. The optical correcture system flattenes the curved field of the Schmidt-Cassegrain telescope, offering a fully corrected image area of 24 mm diameter. The corrector offers an improvement also visually, the sharpness at the edge is enhanced and the yield of true field of view is obvious. We recommend to use the corrector with 1.25" eyepieces.
Astrophotography with off-axis guider:
Because of the long focal distance and the large aperture of SC telescopes, we recommend off-axis guiding. With this, the imaging telescope becomes guide scope at the same time. We recommend the following adaption: TSSC-M48 adapter from the SC thread of the corrector to a M48 connection TSOAG27 off-axis guider and adapter to T2 at the same time
Adaption of the SC corrector to 2":
Many amateur astronomers use a separate focuser at their SC telescope for more precise focusing and avoid mirror shifting.
Not every camera-side connection adapter with SC female thread fits:
Unfortunately, the SC thread is subject to certain variations. Straight connection adapters with a narrow SC female thread do not fit. We have tested the following adapters and they fit: All Celestron adapters, such as 1.25" Visual Back CE821170. The TS adapters to T2 and to M48 (TSSC-T2S and TSSC-M48) The following adapters do not fit: TSSC-2, TSSC-T2L, Baader adapter
Translated with www.DeepL.com/Translator (free version)
Connection at telescope side: | SC 2" thread, female |
Connection at camera side: | SC 2" thread, male |
Optimal working distance from the SC thread: | 85 mm +/- 15% |
Lenses: | Four airspaced elements multi-coated |
Reduction factor: | 0.63x |
Corrected image area: | 24 mm diameter |
Clear aperture: | 41 mm |
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 Hubert Elsner
on 2023-08-04
Ich verwende den Reducer am C 9.25 mit einer Canon mit APS-C Sensor.
Funktioniert sehr zufriedenstellend.
Written by Andreas Sperber
on 2021-11-12
"Auch wenn es um einen f/6.3 und nicht f/63 Reducer geht ;-) Ein wundervolles Teil - die Coma war wie versprochen weg beim Gesichtsfeld der ASI. Bei der EOS ist sie noch leicht am Rand zu sehen, aber um WELTEN besser als ohne. In Sachen Preis/Leistung meine absolute Empfehlung!"
Written by Olaf Kavelmacher
on 2021-09-13
Erstaunlich was man mit dem Teil aus einem C11 noch heraus holen kann
Written by Luca Lencioni
on 2021-09-08
Written by Anders Hörberg
on 2020-08-06
"Add a illustration regarding surface for focal calculation"
Written by POUDROUX FREDERIC
on 2020-04-07
Written by Jens Rymas
on 2018-03-31
"Ich habe diesen Reducer für mein Celestron CPC 800 gekauft und bin sehr zufrieden. Passt einwandfrei. Leider konnte ich aufgrund des Wetters noch nicht testen. "
Written by Stefano Chinnici
on 2018-03-01
"High quality product at an interesting price point"
Written by Ralf Schäfer
on 2016-10-22
"Der Reducer tut was er soll, die große Brennweite meines Celestron C9,25 um den Faktor 0,63x reduzieren. Wie beschrieben wird das APS-C Format nicht vollständig ausgeleuchtet. Ca. 24mm sind es aber. Die Sternabbildung ist innerhalb der 24mm deutlich besser als ohne Reducer und die Belichtungszeiten verkürzen sich entsprechend dem Faktor. Auch mechanisch passt der Reducer problemlos an mein C9,25. Für den Preis auf jeden Fall eine Kaufempfehlung und für Astrofotografen ein must-have."
Written by Roelof Platenkamp
on 2016-08-01
"Produkt sehr gut, reduziert beleuchtiungs zeit und korrigiert wie versprochen."