​This telescope , incl. eyepiece, will be checked, surveyed and adjusted by us, before we send it to you.

This telescope is checked, measured and adjusted if necessary before delivery. The focuser is set. Upon request, you will receive a meaningful quality certificate from your telescope (test report with star test, Ronchi, adjustment, with individual serial number) included! Please specify with order!
Examples of our test protocols: test recordings
How we adjust: About us

TS 65mm f/6.5 Quadruplet Astrograph - 65mm aperture / 420mm focal length

... 4 element APO telescope with field correction for astro photography

The TS Quadruplet Astrograph 65mm (f/6.5) offers a corrected focal plane also for astro photography.
It is fine crafted and optimal for mobile deep-sky imaging featuring a minimum mechanical length of 340 mm (with retracted dew cap). Image quality on- and off axis is perfect and the very low chromatic abberation allows a visual magnification range up to 150x.

2" RP focuser:

This focuser combines the advantages of a rack & pinion focuser with an improved bearing system. The Crayford design has an  optimal stiffness only when the drive shaft is pressed firmly against the rail - this causes bucky operation. The fine machined cograil allows smooth focusing even under heavy loads up to 3 kg.
The focuser also features a 2" and 1.25" receptacle with brass compression rings. 2" accessory is locked by two thumbscrews - this prevents tilting.

 

The 65mm Quadruplet's optical system - four lenses in two groups:

For this lens system FPL-53 glass is used for optimal colour correction. Stars are free of colour fringes and halos which may occur with camera-side corrector applications.
The fixed internal ED flattener causes an optimal image correction for sensor with a diagonal up to 44 mm. With a separate lens brought into the focuser, this can hardly be reached. This highly corrected system is additionally supported by a adequate baffling system
 

Product Advantages:

• Full corrected triplet lens group for colour-free imaging
• Integrated field flattener (w/ 4th lens) for a corrected fiels up to full-size sensors
• Optimized flattener position inside the tube for best effect
• 2" dual speed focuser for good loads - no slipping, no shifting
• for ideal framing: 360° rotation possibilitiy
• CNC tube rings
• Finder shoe which is compatible for Vixen/Celesstron/Skywatcher

Technical details:

• Aperture: 65mm
• Focal length: 420mm
• Photographic speed: f/6.5
• Diameter of the corrected field: 44mm
• Weight: 2.8 kgs (with tube rings)
• Focuser: 2" RP with improved bearing, 360° rotation and ring clamping
• Mechanical length: 340/375 mm with retracted/extended dew cap
• Resolution: 1.78 arc seconds
• Limiting visual stellar magnitude: 11m6
• Diameter of the dew cap ... 88mm (for solar filter)

Scope of Delivery:

• Optical tube w/ focuser
• CNC clamps
• Holder for finder

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Benefit from our experience as a telescope specialist:
 
For over 30 years we have been passionate about astronomy
Every day we check, optimize & adjust telescopes, mounts & accessories, before handing over to the customer
In this way we know the advantages and disadvantages of the individual products
We sell & recommend only products we use ourselves of which we are convinced
For a comprehensive, brand-independent consultation we take a lot of time for you
As the first astronomy specialist, we offer our customers real-time video consulting,
For to see is to understand
Even after the purchase we are there for you & are still at the side for setup and operation
In case of questions or new entry, we offer instruction &
In special cases also on-site service in the Munich area