Thanks everyone for your comments and I have looked into the filters, both seem to be set up to remove the violet colour spectrum which reduces overall focus of the image and give the horrible start bloat and blue rings. There appears to be two type
Rex's
Baader Planetarium Fringe Killer Minus Violet Filter (Fringe killer) $75.00
- Improves resolution, contrast, and unaltered image brightness
- Removes colour fringe while preserving every bit of light possible
- Does not affect image brightness, impart strong colouration or reduce contrast at important wavelengths
- Permits stacking with no image degradation
- Excellent for planetary and deep sky imaging
Carl's
Baader Semi APO filer $100.00
- Reduces fringing and boosts colour contrast
- Delivers neutral view without the annoying violet fringe
- Enhances sharpness, contrast, and aesthetics
- Excellent for high-resolution imaging
- Great for both planetary and deep sky imaging, especially Jupiter and Mars
Both are for achromats so that is not an issue
So which would be better probably as its a cheap scope the fringe killer at $75.00 maybe?
Also would it really make a difference to the quality this scope can give, would it be worth the spend.
Thanks
Carl
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