Quote:
Originally Posted by Peter Ward
They are all multi-layer filters....interestingly the H-alpha has the most layers and throws up the odd result....and smaller stars.... 
Yes, putting a star cluster off axis shows up as curvature in CCDI. (trial copies are available as free downloads....good fun to play with) |
Hm interesting, I am happy to be proven wrong might give it a go for myself next time im out.