TS-Optics 61EDPH II - 6-Element Flatfield Apo 61 mm Aperture F/4.5

This telescope is inspected, measured and adjusted if necessary. The eyepiece output is stopped. On request from your telescope, you will receive a meaningful quality certificate (test protocol with star test, Ronchi, adjustment, with individual serial number)! Please specify when ordering!

Examples of our test protocols: Test records
How we adjust: About us

We will send these telescopes free of charge in Germany.
 

TS-Optics 61EDPH II 6-Element Flatfield-Apochromat

The TS-Optics 61EDPH is designed for astrophotographers and nature photographers. It convinces with its compact dimensions and its high-quality 3-element lens. The 3-element corrector has been specially developed for this apo and produces a corrected image field with 44 mm diameter and without chromatic aberration, ideal for full-frame cameras. The fast aperture ratio of f/4.5 allows short exposure times. The 61EDPH is a fast and portable travel apo for astrophotography.

Important: The corrector can be connected to the focuser in two ways. With the correct one, the long part points into the drawtube and the short one towards the camera.
 

Connecting cameras to the apo:

An M48x0.75 thread is available on the back of the sturdy 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. Matching T-rings can be found in the accessories section.
 

The TS 61EDPH provides a convenient connection for 2" nebula filters

Simply unscrew the corrector from the focuser and you will find the M48x0.75 female thread on the telescope side. Simply screw in the nebula filter and then screw the corrector back into the focuser. The working distance of 55 mm does not change. You can continue to use your adaption, whether with or without a filter.
 

Attaching the TS 61EDPH to mounts

The CNC tube ring has a GP/EQ5 style level dovetail bar at the base. You can attach the telescope to the appropriate quick couplings of mounts and travel mounts such as the Skywatcher Star Adventurer. Matching saddle plates can be found in the accessories section. In addition, the dovetail also has a 1/4" photo thread. The apo fits, like a telephoto lens, directly on every photo tripod.
 

The carrying handle is a real multifunctional part

The handle not only facilitates the mounting on the photo tripod, it is also the base for further adaptions. The handle has a long hole and a 1/4" photo thread. For example, you can mount a ball head on it and mount a second camera in parallel. Next to the grab handle there is a viewfinder shoe for finder scopes, mini telescopes or sighting devices.
 

Observation through the TS61EDPH

Although the apochromat was designed for astrophotography, it also allows observation. Unscrew the photo corrector. You have a female M63x1 thread available. Then screw in the adapter to 2", which is included. A plug-in adapter from 2" to 1.25" is also provided. The backfocus is sufficient to use 1.25" and also 2" zenith mirrors and eyepieces. Thus, nothing stands in the way of nature and star observation. The apo allows a magnification range between 10x (overview) and 120x (for lunar craters and planets) with the appropriate eyepieces.

 

Aperture:	61 mm
Focal length:	274 mm
Open ratio:	f/4.5 effective
Objective f/Ratio:	f/5.5
Objective:	triplet objective with two ED elements, air-spaced
Corrector:	Reduction factor 0,81x
Illuminated and corrected image circle:	44 mm
Optical system:	3-element system in 2 groups
Objective lens:	3-element ED lens
Connection at camera side:	M48x0,75 external thread (male)
Working distance:	55 mm from the M48 thread
Auxiliary thread:	M63x1 internal thread on focuser - max. 115 mm back focus
Focuser:	2.5" RAP rack and pinion focuser with micro speed reduction and 360° rotation
Length:	264 mm with dew cap inserted
Height:	141 mm including dovetail and carrying handle
Weight:	1.8 kg (1.35 kg telescope with dovetail - 0.45 kg corrector)
Dew cap diameter:	90 mm
Lens diameter of the corrector:	53 mm (telescope side) 48 mm (camera side)
Dovetail:	EQ5/Vixen level with 1/4" Phototripod thread - length 100 mm

In the box:
♦ 61EDPH apo
♦ CNC tube ring with viewfinder shoe, EQ5 style dovetail bar and carrying handle
♦ 3-element photo corrector integrated
♦ Dust caps for objective and camera connection
♦ Adapter M63 to 2"
♦ Adapter 2" to 1.25"