Quote:
Originally Posted by kkara4
Dunk, would this be the dew shield required if I did have a dewing problem?
http://starizona.com/acb/Astrozap-Al...P3167C121.aspx
I think I would be naive to believe that I wont have a dewing problem, id rather consider it and be prepared for it than not. At the same time I dont want to make things too complicated!
I had a look at those GSO RCs, and then looked up some info on advantages and disadvantages of RC vs SCT for astrophotography. After reading this thread http://www.cloudynights.com/ubbthrea...fpart/all/vc/1, I think I want to stick with SCT, I dont like the sound of collimating an RC constantly! It also sounds perhaps like the Edge HDs have maybe a slight advantage over the RCs, although I must admit I dont understand some parts of the discussion in that thread! (yet) |
I use the
Astrozap flexible dew shield (for 11") as I find it squishes into a space in the car better
I also have the heated version, although at some point I will get my hands on a separate heater tape as there is some evidence that heating the aluminium tube just behind the corrector is more effective at keeping it dew free than heating the thicker black (steel?) ring around the corrector. If you're serious about dew, check out the
DewBuster 
I've heard the RC can be a bit more interesting to collimate, but it also lacks a corrector. It's a difficult choice
As everyone has said, choose your mount carefully.