Square or circular? Moravian Instruments C3-61000 PRO · Riccardo Civati · ... · 9 · 325 · 0

AstroReghe 1.20
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Hi all

Is true that Moravian C3-61000 Pro needs Square 50x50 filters because with circular filters there Is vignetting?

Riccardo
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andreatax 9.89
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It depends on configuration, camera + optical system ahead of camera.
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AstroReghe 1.20
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TEC 140 ED with flattener 1x f/7.
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andreatax 9.89
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Internal or external FW?
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andreatax 9.89
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Either way, 50mm unmounted, round. You might get away with 2" mounted with the internal FW, by a very slim margin though. I wouldn't bank on it, however.
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darkmattersastro 11.95
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With your TEC140 you should be able to use 50mm round filters. If you were to upgrade to a different OTA in the future or to a larger sensor the square filters would be required. If you think that may be a possibility it could make sense to go to the 50mm square filters now.
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carted2 4.17
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Riccardo Civati:
Hi all

Is true that Moravian C3-61000 Pro needs Square 50x50 filters because with circular filters there Is vignetting?

Riccardo

I'm using the C3-61000 camera on a 12.5" iDK at f/6.8 and I have the 50mm round filters. They work fine with no vignetting. Like Bill mentioned, if you plan on going with a bigger sensor in the future, the 50x50mm filters would make sense.
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skybob727 6.67
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I use 50x50mm on my C3-61000 because I already had them. If the price difference is not an issue, I'd just go with the 50x50mm.
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AstroReghe 1.20
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Daniel Carter:
Riccardo Civati:
Hi all

Is true that Moravian C3-61000 Pro needs Square 50x50 filters because with circular filters there Is vignetting?

Riccardo

I'm using the C3-61000 camera on a 12.5" iDK at f/6.8 and I have the 50mm round filters. They work fine with no vignetting. Like Bill mentioned, if you plan on going with a bigger sensor in the future, the 50x50mm filters would make sense.

***Hi Daniel
can you send me your master flat frames stretchd ( all filters)?***
riccardo
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carted2 4.17
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Riccardo Civati:
Daniel Carter:
Riccardo Civati:
Hi all

Is true that Moravian C3-61000 Pro needs Square 50x50 filters because with circular filters there Is vignetting?

Riccardo

I'm using the C3-61000 camera on a 12.5" iDK at f/6.8 and I have the 50mm round filters. They work fine with no vignetting. Like Bill mentioned, if you plan on going with a bigger sensor in the future, the 50x50mm filters would make sense.

***Hi Daniel
can you send me your master flat frames stretchd ( all filters)?***
riccardo

I'll get them to you via private messaging later today or tomorrow morning.
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