the size of our Milky Way galaxy, M101 is 170,000 light years across
and 21 million light years from Earth. It has a high population of
hydrogen-II regions where stars are believed to be formed.
Companion galaxy NGC5477 can be seen at the left edge slightly
above center. North is at the top.
AstroTech AT8RC 8" F8 Ritchey-Chretien with ATFF2 Field Flattener,
Celestron CI-700 Mount
Orion StarShoot Pro V2 one-shot color
QHY5L-IIM through Orion Deluxe OAG, PHD guiding software
(18) 10 min
Nebulosity, PhotoShop CS2
04-18-15, Tierra del Sol, CA. Below average seeing, slight