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How to Collimate your Newtonian

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1353 replies to this topic

#1351 Starman1

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Posted 26 May 2023 - 12:29 PM

Vic,

I enhanced the view of his circular small grey center marker in his image.

I note that the outer blue circle is too large and slightly mispositioned.

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Edited by Starman1, 26 May 2023 - 12:31 PM.

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#1352 Vic Menard

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Posted 26 May 2023 - 03:03 PM

I enhanced the view of his circular small grey center marker in his image.

I note that the outer blue circle is too large and slightly mispositioned.

Thanks, that helped.

Using the center marker as reference improved the alignment relative to the bottom edge of the focuser drawtube. (The outer light blue circle is concentric with the primary mirror center marker and is just inside the outer edge--I didn't include the blue cross hairs because they would have covered the violet cross hairs.)

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Edited by Vic Menard, 26 May 2023 - 03:10 PM.


#1353 Vic Menard

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Posted 26 May 2023 - 03:13 PM

I can't help but notice that the spider vane attachments to the OTA are just visible inside the primary mirror reflection. Is that normal? Are the attachments abnormally long?



#1354 fmendes

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Posted 29 May 2023 - 08:55 AM

I can't help but notice that the spider vane attachments to the OTA are just visible inside the primary mirror reflection. Is that normal? Are the attachments abnormally long?

They are standard SW Quattro 200P. Look the same as most telescopes I seen lately, and have length ~15mm.

 

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