Thanks for the replies gentlemen.
Depends on the Quark. If you want even more contrast, a longer focal-ratio would help there (F10+ would be gnarly high contrast perhaps, if the Quark is a good sample). Expect contrast higher than just the Lunt 50 in single stack mode, maybe similar a little less than a double stack. But, the difference in aperture will be significant. You will see details that you didn't see in that 50mm. I highly recommend you break out your binoviewers. A larger aperture, Quark and binoviewers are a totally different experience especially with a big prominence or an active region.
That's pretty much what I've been thinking. What eyepiece would work best with the binoviewers? 32mm plossls?
My concern is that the Quark might deteriorate after a few years due to the mica heating element losing its thermal properties. Is that a valid concern?
I think the Quark requires an external power source. Just mentioning if from the point of convenience.
I'm not concerned about the use of a power source. I have a Talentcell 6000mah battery pack I use to supply 12V to my mount. It also has a 5V usb that can supply 2A max - Quark only draws 1.5A. The advantage of the Talencell is that it doesn't have an auto shut off feature when it detects a low current draw, so the Quark does turn off. Would be very convenient to use a single power source for both my mount and the quark.
Edited by Cometeer, 19 December 2018 - 09:56 AM.