Hello all,
During my first few days of using a scope (Meade Kestrel 20x-60x 80mm) I find that my local Blackbird has a 'purple' outline when viewed against an overcast but bright sky. The outline seems to get more intense at higher power.
When I view the same bird against a dark or colourfull background the 'purple outline' dissapears.
Can any offer a reason for this, is my scope defective ?
During my first few days of using a scope (Meade Kestrel 20x-60x 80mm) I find that my local Blackbird has a 'purple' outline when viewed against an overcast but bright sky. The outline seems to get more intense at higher power.
When I view the same bird against a dark or colourfull background the 'purple outline' dissapears.
Can any offer a reason for this, is my scope defective ?