Use this section to discuss "standard" Baader/Coronado/ Lunt SolarView/ Daystar, etc… filters, cameras and scopes. No mods, just questions/ answers and reviews.
I've been researching to start CaH or CaK imaging. From what I understand a scope with a good quality at UV range is needed.
How would you comment Tak FOA-60Q? I know a much cheaper synta 100mm ED may be better in terms of price-vs-performance.
I haven't seen much discussions using FOA-60Q in CaH/K nor Halpha. So just want to see if anyone may have thought using the scope for solar imaging?
Stephen
Hi Stephen.
Probably not to be honest. Just go for a Sky Watcher ED80 and stop it down to 60mm. The Tak is 2 or 3x the price of the SW.
Mark
Mark,
Thanks and it’s true that the Tak is pretty expensive, for the purpose. I owned a FC76DC for HA. The result is quite alright. However I checked the spot diagram and found the UV range of the 76DC is not very well. That’s why I’m researching if there’re other options for CaK/H. I’ll search and see how’s the performance of the 80ED, or may be just stick with the 76.
Stephen,
I regularly use an ED80 stopped down to 60mm to give an f10 beam to the CaK filter.
Check out some of my results on the forum.
It certainly seems to work well for me.
My other alternative is my Custom Vixen 90/ 1000 which also works very well in CaK
Thank you. Yes I did searched around the forum and saw your results. Those are pretty nice. I think I would probably stay with my FC76D and then go for a Daystar Quark CaH... and try pushing it a little bit by trying different barlows and see how it goes...
I'm always looking for a 100mm-ish refractor in the 2nd hand market. However the only available items nearby my area is a brand new Celestron XLT 102 or 120. For SW, I cannot find the old version of Evostar anymore. I browsed around the forum and there're lot of useful information for me to understand what's needed for CaK/H. Until now I've found the CaK/H is a very "special" range of the spectrum for the commercial refractors to handle. Yet it'd be interesting to experiment with different setups.