I use a Huion A2 LED light pad for my 10” Newt and a Huion A3 LED light pad for my 8” Newt
https://www.huion.com.au/product-pag...-led-light-pad
https://www.huion.com.au/product-pag...-led-light-pad
I just used black cardboard from Officeworks , cut it to the size of the light pad then cut a hole say 10mm wider than the diameter of the OTA. This reduces stray light from hitting the rig. Then slew the mount in Ra and Dec until end of OTA is pointing to Zenith, sit the light pad on top and take your Flats , very easy and convenient. I even taken them in during the day inside the Dome ( shutter down and door shut ) with a black large shower cap fitted over the back end of the primary mirror end to block out stray light.
I’ve had these light panels for about 5 years now and no issues at all , although the costs back in 2019/2020 were half the current prices.
Cheers
Martin