Sensor frame · 1.2° × 2.1°
150mm f/5.0 integrated camera
5.57 × 3.13mm sensor
Comfortable margin· Whirlpool is 11′ across, 15.3% of the 1.2° 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.