I wanted to take images of the sun but did not want to spend too much on buying a solar only scope. The results I was able to get using the Quark is way better than the results they are advertised with, So it exceeded my expectations and I am able to use most of my scopes with this. If you are looking to get started into solar this is the single best thing you can buy that shows you every detail on the sun.

First rate service as always from FLO. I've only had a couple of opportunities to use the Chromosphere version I purchased. Hooked up to my old Evostar 80ED the views it provided are incredible. It has been terrifically easy to use and create a full solar mosaic on only my second use with stunning detail. Verry happy so far.

The best thing about FLO is that they allowed me to order and pay for the item which was out of stock. The waiting time was up to 3 months, but I received my item only a month later. I have bought many items from FLO and every single time they delivered on time and I never had a problem with the product itself. The communication with FLO is also quick and efficient. I really recommend FLO!

Many thanks to FLO for this good unit. My first light images are on the stargazers website, (Altocumulus), very roughly processed, but shows potential for the Quark. I need to check all the settings having only used the one as received. A first stab at powering from a pegasus ultimate v1 was unsuccessful, not too sure why, there ought to be enough juice available, but using the supplied charger I got the green light 9 minutes in.
I bought this as a less expensive option of doublestack for my Lunt ls60tha. Seems a good decision so far. Aye it takes a while to warm up, but I can browse through WL and CaK whilst that's going on.

I got this for my wife who loves solar and have to admit I was a bit sceptical at first after reading a lot of forums with mixed feelings about the Quark.

Bad weather’s been a pain this year but we managed to try the Quark one sunny morning and we are so impressed with it. The images it delivers are as good as those taken with way more expensive solar-only scopes, such as Lunt or Coronado. This is an unbelievable achievement fro Daystar at this price.

We have the chromosphere version but we’re so happy to see that prominences are well visible too.
If you are thinking to get one of this, just go for it!

DayStar arrived on time and without dramas. Set up on Williams Optics Zenith Star 73. I had the DayStar 2" adaptor and used my Panaview 26 and 32mm and Aero 40mm eyepieces. Understanding these are not best suited to this application I was surprised that the views were not bad at all. The key variable was the seeing which ranged from reasonably stable to terrible. For optimum performance I set the tuning knob fully anti-clockwise. The setting seemed to work well for all features observed.
The sun's activity was relatively low throughout a number of viewing sessions. One sunspot and associated active areas were seen well. Spicules on the sun's edge were seen in excellent detail. The few filaments seen showed good levels of detail if somewhat lacking in contrast. Prominences were seen very well with good contrast and significant detail.
Side-to-side with Coranado PST the DayStar Q Chrom is clearly a step up in contrast and detail. The most obvious difference is the lack of "sweet spot" with the DayStar filter (compared to PST): the view being uniform across the entire FOV.
Using the DayStar + adaptor + ZWO ASI 174MM for a quick imaging session worked well. Interference patterns were evident - very fine patterns and wider light and dark bands. With the tuning knob fully anti-clockwise these patterns were minimised. A tilt-adaptor would probably be required for serious imaging.
Overall very happy with the DayStar Q Chrom!

got to use the quark chromosphere today for first light.
It's riding on an ED80 and Solar Quest mount. Instead of the UV/IR cut filter I opted for the Baader 35nm filter as advised by members on SGL. The view was amazing. I spent some time changing the tuning. I found the 0 gave me the best surface detail and -3 the best contrast for proms. Overall I'm delighted. On the solar quest I bought it used and it holds the ED80 and the quark and the rest of the stuff easily. I put a prom in the center of the FOV and it stayed there for the whole 2:30 session whilst experimented with settings.

First thanks again to all at FLO for a safe and fast delivery.
Well packaged and undamaged
The Quark itself comes in a plastic screw down case so will always be protected, the cable is very long so should easily reach the Quark in normal situations.
As usual as soon as it arrived the clouds jumped out of the box and into the sky, there is also very little activity on the sun.
Tried it for an hour today in between clouds and it is brilliant. Black sky and bright sun. The couple of minor prominences stood out easily, trying my friends chromosphere version the same proms were not visible (on very similar scope)
The product itself is well designed and sturdy with no noticeable flex or wobble in the star diagonal, the cable holds well and shows no sign of trying to come loose.
Using a 21.5 to 10mm solar eyepiece at 21.5mm the full disk is just visible on a WO71 (400mm) 30mm eyepiece would be better for full disk.
Closing down to 10mm reduces light significantly from very bright to quite dim but still gives excellent views.
If you are interested in general solar viewing then the Chromosphere version is the one to get, however first impressions are that this by far out performs it when it comes to Prominences..
The other thing to note is that there is no sweet spot with even illumination all round - fantastic
The 10 min wait between band shifts is an advantage, going from full left to full right is about 10 mins but if you keep viewing during this change you can see features come and go. So gives you a good idea on which bands to try next.
Just have to wait now for a clear day and pop a camera on it.
All in all for its price point 110%
Clear skies and stay safe