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Feild Flattener for 80mm APO


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#1 Michael Cook

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Posted 09 July 2008 - 05:38 PM

Just received the Meade 80mm ED APO and I'm looking for recommendations on a field flattener.  And will the flattener reduce/eliminate coma?

Thanks

#2 cannon

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Posted 09 July 2008 - 07:59 PM

I used to have a Meade 80mm Triplet APO and had no coma. Sounds like your scope is not collimated.

#3 Michael Cook

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Posted 09 July 2008 - 09:58 PM

I used to have a Meade 80mm Triplet APO and had no coma. Sounds like your scope is not collimated.


I should have indicated that the scope is fine visually.  However, when imaging with a DSLR, I noticed coma in each of the four corners of the image frame.  The amount of coma in each corner is the same, so is this still a collimation issue?

#4 cannon

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Posted 10 July 2008 - 03:42 AM

Televue makes a very good field corrector. I would give them a call  1-845-469-4551 and explain to them what you have and what your trying to do.

#5 Mark Sibole

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Posted 10 July 2008 - 10:51 AM

Imaging whit that size chip on a smaller scope will induce some coma.
You can look into the Baader MPCC and see if it will work with the 80 mm.

Regards

Mark
Mark Sibole
MTSO Observatory
Fife Lake, Mi.

http://astronomy.qteaser.com




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