Page 1 of 1

A doubt about a Calcium Filter for solar observation

Posted: Sat Jul 25, 2015 11:36 pm
by anmalobo
Hi:
A few days ago, I found this filter

http://agenaastro.com/baader-calcium-ca ... -1-25.html

Does somebody know it? Does it work well? Is it worth to buy it?

I ask it because before there were Calcium Telescopes for solar observations, but currently, I don't find them. However, there are modules, at least, sold by Lunt. The filter is cheaper than a module.

Regards
Angel

Re: A doubt about a Calcium Filter for solar observation

Posted: Sun Jul 26, 2015 7:14 am
by marktownley
It will only perform slightly better than a white light continuum filter for imaging. The photos in the link are unrepresentative of what you can achieve with this filter. Either get a white light filter or save up for the Lunt is my advice.

Re: A doubt about a Calcium Filter for solar observation

Posted: Sun Jul 26, 2015 7:42 am
by Derek Klepp
Angel the Lunt is the go.I use the Baader as a double stack

Re: A doubt about a Calcium Filter for solar observation

Posted: Sun Jul 26, 2015 10:18 am
by anmalobo
Thanks.
Regards
Angel

Re: A doubt about a Calcium Filter for solar observation

Posted: Sun Jul 26, 2015 11:32 am
by Montana
Here is a post showing the difference between WL and with the Baader K line attached http://stargazerslounge.com/topic/24898 ... ine-25715/

Alexandra