I'm having some strange flat problems so today I had a look at the SnapCap on my Tec180. This device serves as both a remote lens cap and flat field generator.
The photo shows a few issues. I black clipped it to make the issues more obvious. I'm not sure about the purple colour. I think it is just my phone interacting somehow. To the naked eye, no matter the brightness, there is a center hot spot and an odd blue "bar" at the 4 o'clock position. These don't change when the light panel's intensity is changed - they just both change in direct proportion to the overall intensity,
Unfortunately Gemini is out of business and I fear I'm out of luck. Would any of you know whether this might be repairable if I dismantled it?