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Old 18-07-2019, 06:46 PM
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codemonkey (Lee)
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Join Date: Jul 2013
Location: Kilcoy, QLD
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I've got the Astronomik 6nm narrowband set and used to have the ASI1600MM-C. I never saw halos like that and have been very happy with my set.

All the below images were taken with the ASI1600MM-C, Astronomik SII and OIII where applicable.

These two used a Baader Ha:

https://www.astrobin.com/272385
https://www.astrobin.com/260551

These two had the Astronomik Ha:

https://www.astrobin.com/291734
https://www.astrobin.com/283343

Pretty sure I saw a thread on cloudynights that reviewed the new ZWO filters and if I recall correctly they were better, but OIII still had halo issues. I could be wrong on this though, I had no interest in buying the filters and simply saw it in passing. I encourage you to search the "CCD/CMOS Astro Camera Imaging & Processing" section to try and find that thread.
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