|
G'day Rob thanks for the advice. I hadn't thought about the longer focal length being more difficult, I did realise that the shorter focal lengths are faster, however if you put a barlow on a faster scope to frame your object the way you want, would that be the same as having a longer focal length to begin with? Thanks for the link I will check it out. I was kind of hoping that whatever I get was going to last me a while and looking at the price, if my light gathering math is correct then the RC6 is much cheaper than an ED 80 and much much cheaper than an ED100. I currently have an Olympus DSLR camera and some lenses that I have been taking photo's with, and I recently got guiding working with a webcam. Although I havn't obtained any substantial data yet using the guiding because of the clouds. I can get my polar alignment pretty close as I can see the octans from my place and then I drift align to touch it up, so I was hoping the longer focal length wouldn't be too much of an issue??? But not really sure how much harder it is.
G'day Peter I like DSO's. With my current set up I am restricted to widefields but would love to take some Planetary Neb photo's, globs and galaxies are also a big interest of mine.
Any advice would be appreciated regarding the math in my first post and the optical quality of these scopes as a comparison.
Thanks again for your help
|