TS 6 inch f/9 Ritchey-Chretien Astrograph on EQ3 Mount
Price
1,245.00 €
Shipping
7.50 €
TS 6 inch f/9 Ritchey-Chretien Astrograph on EQ3 Mount
The Ritchey-Chretien telescope offers everything you will expect of a
portable instrument for astro-imaging. It is extremely portable and
offers a superb image quality also visual observing.
The advantages at a glance
The mount
The Skywatcher EQ3 mount with the aluminium field tripod is a good base.
TS Ritchey-Chrétien (RC) telescope
RC telescopes are known for their excellent optical performance, especially for photographic applications. But RC telescopes are also well known for their expensive price. Teleskop Service want to change this situation and offers a full line of true RC telescopes for the amateur to an affordable price.
Features of the TS RC optics
Low Thermal Expansion Quartz Primary and secondary mirrors
Designed for astro imaging, TS RC mirrors are made of low thermal expansion quartz, rather than the ordinary optical glass used by competitors. Ground and polished under precision computer control to diffraction-limited surface accuracy. Both primary and secondary mirrors have a full 99% reflectivity for the brightest possible images. This is substantially higher than the 88% reflectivity of competitors’ conventional aluminum coatings or the 94-96% reflectivity of enhanced aluminium coatings.
Advantages of TS RC *Ritchey Chrétien“ Astrographs for astrophotography
The TS Astrograph is a real Ritchey-Chrétien reflector telescope. Contrary to Maksutovs or Schmidt-Cassegrains which have spherical mirrors and need image correctors, and contrary to Newtonians that need coma correctors, the RC system is a well corrected photographical instrument that uses only mirrors (no false colour!) and does not require any corrector with many cameras.
RC Telescopes are superior to Schmidt-Cassegrain telescopes with correctors
This is also the advantage of RC telescopes against Celestron EHC or Meade ACF telescopes. These telescopes need a lens corrector which is integrated in the optical system. The RC is a true reflection system without lens corrector and with a really bright image.
Fixed primary mirror - no shifting:
Most similar telescopes have a movable primary mirror cell. When focusing, the telescope the entire mirror is moved. Unfortunately this technique invariably leads to a certain amount of image shift. Most manufacturers have controlled this problem to a fair extent, but the remaining image shift can be quite distracting for astro-imaging, particularly with cameras with a small sensor size or when taking series of frames with several hours of total exposure time. In the TS RC the mirror sits in a fixed mirror cell and focus is changed with a separate focuser. This eliminates the problem of image shift completely.
Delivery contents
The TS 6" f/9 RC astrograph telescope is perfect for astrophotography but also for observing. It is a powerful travelling telescope.
The Ritchey-Chretien telescope offers everything you will expect of a
portable instrument for astro-imaging. It is extremely portable and
offers a superb image quality also visual observing.
The advantages at a glance
- Aperture 6" / 15 2mm
- Focal Length 1370 mm
- Focal Ratio f/9
- Metal tube with GP Level dovetail bar
- 99% dielectric high-reflectivy coating on main- and secondary mirror
- Big corrected flat field without need for additional correctors
- 2" Crayford Focuser with 1:10 Micro Transmission
- Computer optimized internal baffle system
The mount
The Skywatcher EQ3 mount with the aluminium field tripod is a good base.
- Upgradeable with stepper motor drive system or GoTo
- A polar viewfinder for precise polar alignment is upgradeable
TS Ritchey-Chrétien (RC) telescope
RC telescopes are known for their excellent optical performance, especially for photographic applications. But RC telescopes are also well known for their expensive price. Teleskop Service want to change this situation and offers a full line of true RC telescopes for the amateur to an affordable price.
Features of the TS RC optics
- True RC Optic with a hyperbolic primary and a hyperbolic secondary mirror
- Primary and secondary mirror are made of low thermal expansion quartz
- The secondary mirror has a center mark for better and more simple collimation
- 99% reflectivity non-tarnishing dielectric mirror coatings
- Big well corrected flat field without need of a separate corrector
- Enough backfocus for correctors and reducer
- Less dew problems compared to Schmidt-Cassegrain or similar
- Fast cooling down time because it is an open system
- Each RC is tested and checked on our optical bench
Low Thermal Expansion Quartz Primary and secondary mirrors
Designed for astro imaging, TS RC mirrors are made of low thermal expansion quartz, rather than the ordinary optical glass used by competitors. Ground and polished under precision computer control to diffraction-limited surface accuracy. Both primary and secondary mirrors have a full 99% reflectivity for the brightest possible images. This is substantially higher than the 88% reflectivity of competitors’ conventional aluminum coatings or the 94-96% reflectivity of enhanced aluminium coatings.
Advantages of TS RC *Ritchey Chrétien“ Astrographs for astrophotography
The TS Astrograph is a real Ritchey-Chrétien reflector telescope. Contrary to Maksutovs or Schmidt-Cassegrains which have spherical mirrors and need image correctors, and contrary to Newtonians that need coma correctors, the RC system is a well corrected photographical instrument that uses only mirrors (no false colour!) and does not require any corrector with many cameras.
RC Telescopes are superior to Schmidt-Cassegrain telescopes with correctors
This is also the advantage of RC telescopes against Celestron EHC or Meade ACF telescopes. These telescopes need a lens corrector which is integrated in the optical system. The RC is a true reflection system without lens corrector and with a really bright image.
Fixed primary mirror - no shifting:
Most similar telescopes have a movable primary mirror cell. When focusing, the telescope the entire mirror is moved. Unfortunately this technique invariably leads to a certain amount of image shift. Most manufacturers have controlled this problem to a fair extent, but the remaining image shift can be quite distracting for astro-imaging, particularly with cameras with a small sensor size or when taking series of frames with several hours of total exposure time. In the TS RC the mirror sits in a fixed mirror cell and focus is changed with a separate focuser. This eliminates the problem of image shift completely.
Delivery contents
- 6" f/9 RC Astrograph
- 2" Crayford Focuser with 1.25" adaptor
- Vixen style dovetail plate
- Equatorial Mount EQ3
- Aluminium Tripod
- 1x Counterweight 5 kg
- 2" Diagonal with reducer to 1.25"
- Plössl Eyepiece 25 mm
- 6x30 Finder
The TS 6" f/9 RC astrograph telescope is perfect for astrophotography but also for observing. It is a powerful travelling telescope.
Item number
TSO-GSRC6EQ3
Manufacturer
TS Optics
EAN
4250477917271
Currently there are no reviews available for this product. Be the first to write a review.