NGC 4236

North is left, mirrored. 0.33 arcsec/pixel (16' by 11')

Total exposure time:
457 * 30 seconds = 3.8 hours.

Exposure used in stack:
187 * 30 seconds = 1.5 hours.

Telescope:
C9.25 (230mm aperture, f/10, fl=2300mm)

Camera:
IMX533 (16 mm diagonal, square, OSC)

Processing:
(no software sharpening used)

1. Callibration (dark + flats)

2. Stacking (average w/ rejection)

3. White balance and blackground subtraction

4. Asinh stretch

5. Light denoising

6. Tone curve

7. Crop

There's not too much to say about this:
it's barred spriral galaxy with uneven arms.

Because of it's fairly low surface brightness (as galaxies go), the image uses data collected across nights.
However, it's still not very much because of the vanish­ingly small amount of darkness this time of year, and because
I forgot the dew shield on during the second night.

However, there is a nearby galaxy cluster at 12h15m37s +69°32'30":

I don't think it has a name or catalog designations.
Hubble hasn't imaged it, so the best references avalable are ground-based sky surveys
which aren't not much better than my images.

Raw stacks: 32-bits compressed.