M 101

Posted: Apr 3rd, 2026

Show astrometry on hover

NGC

Technical Info

Telescope/Lens: Sky-Watcher 130/650 PDS

Camera: ZWO ASI585MC Pro

Mount: HEQ5 Pro

Guide Scope: 60x240

Guide Camera: ZWO ASI120MM Mini

Software: ElectraStaking, GraXpert, Siril, PhotoShop, GIMP

Accessories: MPCC II

Exposure:

36 x 300" ISO/Gain: 252 - Optolong L-Pro

Yellow, Bortle 5 zone:

Orehovo-Zuevo, Russia

Apr 2nd, 2025

3 h 0 m

Resolution: 3627x2087 px

Scale: 3535 KB

AlexVK

Galaxy M101 was discovered by Pierre Méchain on March 27, 1781. He later reported it to Charles Messier. Messier verified the object's location and added it to his catalog as one of the final entries. Its distance is estimated to be about 21 million light-years, with a diameter of roughly 170,000 light-years.

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