Galaxy M 101 with Celestron C6se telescope

 M 101 Galaxy

DATA:
Galaxy M 101 from last night, April 13, 2020
Scope: Celestron C6se with F/6.5 focal reducer
Mount: Celestron AVX
Camera: Canon T3i unmodded
Seeing: Good but a bit hazy
ISO: 3200
Sub exposure time: 240 sec
Number of subs: 11
Total stacked time: 44 minutes
10 darks, 10 flats
Stacked with Sequator
Post-processed in Luminar 2018
Cropped 50%

I also want to show you what my "subs" look like and my "flats" and the initial stacked image are for this image of galaxy M 101 (see individual pics) 

This is an individual shot (sub) RAW from the camera unprocessed:

This is the result of stacking with Sequator software of 11 subs:

And this is the result after post-processing with Luminar 2018:

There is one more step in the stacking and that is "flats".

With flats one is able to correct for vignetting

from the optics of the telescope and the focal reducer.

This averages out the light across the final image.