About this product
Part Number: TS61EDPH
The TS-Optics 61EDPH is a fast portable astrograph telescope designed for primarily for astrophotography.
The 61EDPH features compact dimensions and a high-quality triplet lens with optically matched 3-element corrector to deliver a very well corrected field of view with 44 mm diameter imaging circle (ideal for full-frame cameras). The fast aperture ratio of f/4.5 enables short exposure times.
Important: The corrector can be connected to the focuser in two ways. With the correct way, the long part points into the extension tube and the short part towards the camera.
Connecting your Camera
An M48x0.75 thread is available on the back of the stable 2.5" focuser. The working distance from this thread to the camera sensor is exactly 55 mm. This is ideal for all astro cameras and DSLR / SLR cameras.
The TS 61EDPH offers a connection for 2" nebula filters
Simply unscrew the corrector extension from the focuser and you will find an M48x0.75 internal thread on the camera side at the end of the extension. The working distance of 55 mm does not change. You can continue to use your adaptation, with or without a filter.
Mounting the TS 61EDPH
The CNC clamp has a GP and EQ5 style dovetail bar at the base. You can attach the telescope to the appropriate quick-disconnect mounts and travel mounts such as the Skywatcher Star Adventurer. In addition, the rail also has a 1/4" photo tripod thread. The 61 EDPH therefore fits directly onto any photo tripod, like a telephoto lens.
The carrying handle is a real multifunctional part
The handle not only makes it easier to mount the telescope on to a photo tripod, it is also the basis for further adaptations. The handle has an elongated hole and a 1/4" photo tripod thread. You can attach a ball head to it, for example, and mount a second camera in parallel. Next to the handle there is a finder shoe for finder telescopes, mini guide scopes or direction finders.
Observation with the TS61EDPH
Although the 61EDPH was developed for astrophotography, it also a high quality tool for visual observation.
Unscrew the photo corrector. You have an M63x1 internal thread available. Then screw in the 2" eyepiece adapter which is included in the scope of delivery. A step down adapter from 2" to 1.25" is also included.
The back focus is sufficient to use 1.25" and also 2" star diagonals and eyepieces.
- Aperture: 61mm
- Focal Length: 274mm
- Focal Ratio: F4.5 with built in Focal Reducer
- Corrected Image Field: 44mm
- Design: 6-element system comprising of triplet lens and 3-element corrector
- Pure colour, multi-coated APO triplet lens with two ED glasses - colour correction comparable to an FPL53 triplet
- 2.5" RAP rack and pinion focuser with a 360° rotation option and micro reduction also holds heavy cameras
|Aperture ||61mm |
|Focal Length ||274mm |
|Focal Ratio with Reducer ||F4.5 |
|Focal Ratio of Lens ||F5.5 |
|Lens ||Triplet lens with two air-spaced ED glasses |
|Correction Shortening Factor ||0.81x |
|Connection Camera Side ||M48x0.75 external thread (male) |
|Illuminated and Corrected Image Circle ||44mm |
|Optical System ||6-element system in 2 groups |
|Lens ||3 Element ED Lens |
|Working Distance ||55 mm from the M48 thread |
|Auxiliary Distance ||M63x1 internal thread on the focuser - max. 115 mm back focus |
|Focuser ||2.5" RAP rack and pinion focuser with micro reduction and 360° rotation |
|Length ||264 mm with the dew cap pushed in |
|Height ||141 mm including rail and carrying handle |
|Weight ||1.8 kg (1.35 kg telescope with clamp, 0.45 kg corrector) |
|Outside Diameter of the Dew Shield ||Outside diameter dew protection cap |
|Free opening of the corrector ||53mm telescope side / 48mm camera side |
|Dovetail Bar ||EQ5/GP Level with photo tripod connection length 100 mm |
|Included Adapter ||M63 to 2" |
|Included Adapter ||2" to 1.25" |
|Protection ||Dust protection caps for lens and camera connection |
|Carry Handle ||Included |
|Included ||CNC clamp with universal dovetail bar with photo tripod connection and carrying handle is included in the scope of delivery |
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