That is the question that ponders my mind
The sky was perfect last night so I braved the cold to set up my gear and take some images... haven't done it for some time now for health reasons.
All set up I had heater strap on front glass of imaging scope, set the focus with the bahtinov mask and was ready to go.
After setting polar alignment, probably not perfect but good enough for tracking I began to take a series of images. Not happy with the end results I further checked focus and it was ok with the exception of what appears to be the effects of dew in the images taken.
I took to a torch and looked at the front glass and it was clear with the exception of "micro dust particles" on the glass (may require proper cleaning) and further inspection down the tube seemed ok. I am puzzled as to what could be causing the images not to be clear... had no issues in the past.
My set up is as follows:
Orion ET80CF
Filter Wheel
TeleVue reducer
Motorized focuser
The first attachment of NGC 6188 is 1 x 300" Ha with no processing and the second is a stack of 6 x 300". The third image is same stack of 6 that has only been stretched.
Any thoughts
Rocky.