Why do I need a star diagonal for my refractor or SCT?

A star diagonal, like this Celestron 1.25" model, is essential for comfortable viewing. Without it, you would have to look straight through the telescope, which becomes extremely difficult and causes neck strain when observing objects high in the sky. The 90° angle allows you to look down into the eyepiece from a comfortable position.

Will the Celestron 1.25" Star Diagonal work with my Newtonian reflector telescope?

No. Newtonian reflectors have their focuser on the side of the tube, which is already at a comfortable 90° angle. Adding a star diagonal would not only be redundant but would also push the eyepiece out too far, preventing the telescope from reaching focus.

What does "right side up, but reversed left-to-right" mean when viewing the Moon with this diagonal?

When you observe the Moon through the Celestron 1.25" Star Diagonal, craters and seas will appear upright, just as you see them with your naked eye. However, the left and right sides will be swapped. For example, the Sea of Tranquility (Mare Tranquillitatis), which is on the eastern limb (left side from the northern hemisphere), will appear to be on the right side of the lunar disc.

Can I use this Celestron 1.25" diagonal for bird watching?

It is not recommended. While the image will be upright, the left-to-right reversal makes it very difficult to follow moving objects like birds or boats. For terrestrial viewing, you should use a 45° or 90° "correct-image" or "erecting" prism diagonal, which corrects the view on both axes.

Does the Celestron 1.25" Star Diagonal affect the focus of my telescope?

Yes, all diagonals add to the optical path length. Refractor and catadioptric (SCT, Mak) telescopes are designed with enough focus travel to accommodate a diagonal. You will simply need to adjust the focuser to achieve a sharp image. This diagonal will not cause any issues with reaching focus on a compatible telescope.

What telescopes are compatible with the Celestron 1.25" Diagonal?

This diagonal is compatible with any telescope that uses a 1.25" focuser and does not have a built-in diagonal. This includes most: Refractor telescopes Schmidt-Cassegrain telescopes (SCTs) Maksutov-Cassegrain telescopes (Maks)

Celestron Renvoi Coudé - 1.25"

par Celestron

UGC CEL-94115-A

CA$62.00 - CA$62.00

CA$62.00

CA$62.00 - CA$62.00

CA$62.00

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En rupture temporaire

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Convient aux télescopes avec porte-oculaires ou dos visuels de 1,25", angle de vision de 90°, idéal pour observer les objets au-dessus de la tête
Accepte les oculaires standard de 1,25", les lentilles Barlow et d'autres accessoires avec un barillet d'insertion de 1,25"

Diagonale étoile Celestron 1,25"

Le Celestron 1,25" Star Diagonal se glisse dans le porte-oculaire (1,25") de votre réfracteur ou télescope catadioptrique et accepte les oculaires standard de 1,25", vous permettant de voir les objets plus confortablement. Une diagonale inclinée à 90º aide à éviter la fatigue du cou lorsque vous regardez à travers l'oculaire.

Veuillez noter qu'une diagonale de 90° affichera les images à l'endroit, mais l'orientation de gauche à droite sera inversée.

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Celestron Renvoi Coudé - 1.25"

Caractéristiques

Diagonale étoile Celestron 1,25"

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