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Old 13-05-2020, 11:36 PM
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gregbradley
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Join Date: Feb 2006
Location: Sydney
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Quote:
Originally Posted by AnakChan View Post
Hi Paul/Greg,

I have to be frank that I don’t think the 2” ZWO filters work too well with the ASI6200MM. I’m having reflections which are difficult to calibrate out. Note that 2” mounted filters are really only 43mm worth of glass placed approx 45mm away from the sensor.


I’m seriously considering 50mm unmounted alternatives (& putting up my 2” ZWO filters for sale). It would work better for smaller sized sensors.
I used to us 2 inch unmounted Astrodon filters on my STL11 mono years ago. No issues.

I currently use Astrodon Gen 2, 50mm square as I need them for my Proline 16803 and there are no issues with other smaller sensors.

A high quality full frame 61mp sensor like that may need top notch filters.

From what I have gleaned so far from Cloudynights the Chroma Filters are also very good. Antlia is another filter maker that seem half the price of Astrodons (Don has sold his filter business but they are still selling them). Astronomiks seem very good, see Stronmanmike's images for that).


Greg.
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