Erect Image Diagonals

 
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Amelia



Joined: 31 Dec 2007
Posts: 4
PostPosted: Mon Dec 31, 2007 11:57 am    Post subject: Erect Image Diagonals Reply with quote
I recently purchased a 45 degree erect image diagonal for my telescope. My telescope is a Celestron PowerSeeker 114mm Newtonian reflector. Focal length is 900mm. Focal ratio is 8. Mount is German equatorial. I use a K20mm eyepiece. I am able to focus on an image like a fire hydrant when I use only the 20mm eyepiece. However, when I add the diagonal to the eyepiece I cannot focus on the image...everything is blurry. The diagonal is a Celestron. Can you give me some advice about this. Did I purchase the wrong diagonal or do I need to be doing something different. Thanks!
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Jne_K
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Joined: 24 Sep 2003
Posts: 5018
PostPosted: Mon Dec 31, 2007 12:00 pm    Post subject: Reply with quote
Hi

Reflectors cannot use a standard image erecting prism. You must use one specifically made for a reflector. The only such erecting prism we carry is the Zhumell
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Amelia



Joined: 31 Dec 2007
Posts: 4
PostPosted: Mon Dec 31, 2007 12:21 pm    Post subject: Thank you for your assistance! Reply with quote
Thank you for the advice!
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Jne_K
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Joined: 24 Sep 2003
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PostPosted: Mon Dec 31, 2007 12:38 pm    Post subject: Reply with quote
You are very welcome.
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