2" 1:1.7 Newtonian glass path and coma corrector (for Mark V)

Name: Baader 2" 1:1.7 Newtonian glass path and coma corrector (for Mark V)
Brand: Baader
Price: 242 USD

$ 242.00 incl. VAT plus shipping costs

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Product description

2" Newtonian glasspath corrector, 1.7X, with built-in coma corrector (front-side with 2" filter thread)

This large glasspath corrector makes it possible to mount bino-viewers onto almost any telescope with a 2" connection! Even the owners of 'fast', i.e. short-focal length, refractors and photographic Newtonians can enjoy observing deep sky objects with both eyes, without vignetting and without light loss due to reflections, etc.

Our expert comment:

You can determine which glass path corrector is suitable for your instrument by measuring it:

1. To do this, first focus on a distant object.

2. Screw the focuser in as far as possible.

3. Then extend the focuser by one centimetre.

4. Now take the eyepiece you intend to use on the binocular and hold it with your free hand about 20 cm away from the focuser.

5. Look through the eyepiece and move it slowly towards the focuser until the image comes into focus.

6. Use a ruler to measure the distance between the eyepiece stop and the focuser:

If the distance is between 6.5 and 8 cm, the 2-inch Glasweg corrector is required: Product 10824
If the distance is between 3.3 and 6.5 cm, the 2.6 glass-track corrector is required: Product 8665
If the distance is between 1.8 and 3.3 cm, the 1.7 glass-track corrector is required:Product 8663
If the distance is between 0 and 1.8 cm, the 1.25 glass-track corrector is required: Product 8662

(Bernd Gährken)