IC2118, The Witch Head Nebula
19 by 600 sec, darks + flats + bias
TV85 + ASI 2600 MC, Guiding with ASI 120 MM Mini
0.8 Flattener/reducer, no filters
Processed in PixInsight
Taken from Ivanhoe NSW, Quite low in the sky and a 50% moon, but the only place in NSW not raining
, so the 800 km trip, with 400 km detour due to flooding was worth it to try out my new camera.
I am happy with my new camera in terms of sensitivity but there are some issues. My previous camera had round stars to the corners with my TV reducer/flattener. With the new camera the scope and/or the reducer flattener does not cover the chip. Also the stars in one corner have strange cross like artifacts.
Does anyone know what would be causing this, do you think it is
1. Me
2. Camera
3. Scope
4. Reducer
5 . All of the above
Cheers
Paul