|
Reply to Leo. Always worth trying to get a sunspot image - I presume your filter is one that goes right across the front of your tube/scope. Not a filter that goes in the eyepiece (these are no good and dangerous). Check your filter has no tiny holes in it by holding it up to the light. With your scope you can always project the image from the eyepiece onto a large piece of white card and look at that or even photograph it. None of these are as good as using a Herschel wedge - but these wedges can only be used on refractors. Hope this helps.
|