Sensor frame · 34′ × 46′
450mm f/3.9 integrated camera
5.97 × 4.48mm sensor
Comfortable margin· Whirlpool is 11′ across, 32.1% of the 34′ short edge
Room around the target for surrounding nebulosity and stars — often the better picture.
A face-on spiral — its companion NGC 5195 is visible as a second smudge even in modest apertures.