Etalon tuning suddenly too easy

this is the main message area for anything solar :)
Post Reply
Starry Jack
Almost There...
Almost There...
Posts: 711
Joined: Tue Feb 03, 2015 3:44 pm
Location: Vista, CA
Has thanked: 99 times
Been thanked: 152 times

Etalon tuning suddenly too easy

Post by Starry Jack »

I'm nervous that my old etalon (early model PST) Is suddenly moving a little too easily. It used to have much more stickiness but now for most of it's range of motion it is fairly fluid. I can still see the changes in tuning, but it is difficult to determine if the relatively poor performance of my PST Stage 2 mod (5mm BF is due to the etalon degrading or the mellow sun.


Explore Scientific 152mm f6.5 achromat
Aeries D-ERF
Quark Chromosphere f27 native, (f14 when focal reduced)
Mallincam .5x focal reducer (large format)
12nm Filter
ZWO174 (IMX249 chip 5um)
Huge Sense of Adventure Viewing Creation
Post Reply