my name is Davide from southern Italy and this is my first post in Solarchat forum.
I'm glad to be here in this specialized place over this beautiful branch of our passion, Astronomy.
Althought I play amateur astronomy since 1997, I'm a fresh newbie of the Sun affairs.
I actually have a 120mm refractor, paired by a photographic version of Baader Herschel Wedge.
I have a question for a friend of mine.
He has the DayStar Calcium K-line Quantum t-scanner module but no "hot mirror luminance filter", as Daystar suggests.
As Daystar says:
It seems that there is no IDAS luminance filter except of the "Hα-enhanced UV/IR blocking Filters".DayStar recommends use of IDAS Brand UV/IR filters in rear-mounted configuration on refractors only. The IDAS Brand UV/IR cut filter has been tested to pass 3933Å light, but reflects UV and IR light back out the front of the telescope unfocused. This application is called a "hot mirror".
Do you know if there is any IDAS filter dedicated to this "hot mirror" application?
Or if I could apply any other Luminance filter like Astronomik L1 filter that seems to have wide wings in UV part of its bandpass?
Thanks so much in advance for your kind replies.
Have a calm and clear days.