I just got my Baader 495 Longpass filter in the mail, today!
I can't wait to try it out on several achromatic refractors I own.
However, all the talk about about its suitability for use in astrophotography has me confused ... especially the posts on how the color shift can be easily corrected in Photoshop. Since most of blue end of the spectrum has actually been blocked/removed ...I really don't see how the blue can be restored.
I tried Photoshoping one of posted 495 filtered images and while I could get a reasonably color balanced image, a large part of blue fringing was also restored and now very visible in the image!
If someone would post the work flow in Photoshop detailing the steps to color balance a 495 filtered image ... that would be really great!