Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5457
Messier 101 The Pinwheel Galaxy (Crowd Image), Morten Balling
Messier 101 The Pinwheel Galaxy (Crowd Image)
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Messier 101 The Pinwheel Galaxy (Crowd Image)

Messier 101 The Pinwheel Galaxy (Crowd Image), Morten Balling
Messier 101 The Pinwheel Galaxy (Crowd Image)
Powered byPixInsight

Messier 101 The Pinwheel Galaxy (Crowd Image)

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Description

Messier 101 was the first faint fuzzy I ever identified in one of my earliest astro images. Back then I used a tripod and short exposures. You could hardly see the galaxy, but since then M101 has always been special to me.

This image is a Crowd Image. It was made by combining the data of 175 different amateur photos. For more information about the Crowd Images, look at some of the other CI's in my gallery.

Specific for this image:

All images cropped using XnView, all other processing in PixInsight.

RGB aligned using distortion correction. Each channel extracted. 3X3 (R, G and B) layers sorted using subframeselector, based on FWHM. Stacked using normalization and rejection.

Image Credits (Thanks for letting me use the data!

Abel de Burgos, Adam Evans, Ahmet Kale, Andrea Pistocchini, Anton, apricot, äquinoktium, AstroGG, ASTROIDF, Ben Gilsrud, c a palmer, Carl Drinkwater, Carsten Frenzl, Charlie Prince, chripell, Chris Madson, chris2k4ever, ckrege, Claustonberry, Cobbler, Creedence, Czerwik, Daniele Malleo, dave halliday, David Illig, David Milligan, Davide De Col, Epicycle, Eric Holmes, Eric Kallgren, Flavastro, Florian Meyer, fragro, Frank Zoltowski, Fred Locklear, Fredéric Segato, Fredrik Ödling, geco71, Gerardo Blanco, glgerard, gulielmus, Haramir, iva, jah, Jan Curtis, Jared Smith, Jason Tackett, Javier R., Jay Cross, Jean-Daniel Pauget, Jim Keller, john.purvis, Jon Wiley, jpstanley, Juan Lozano, Jussi Kantola, Ken_Lord, khyperia, Kristian Urdal, lacomj, Luca Argalia, Luca Billeri, Manuel Balvin, Matthew, Máximo Bustamante, Morten Balling, nicholall, nicholall, NicolasP, Özgür Ünat, Pavel (sypai) Syrin, Peter Williamson, pfile, Phil Hosey, Phillip Seeber, Ralph W, Ram Viswanathan, Richie Jarvis, rid, robbeh, s58y, Salvatore Iovene, Sendell, Serge, Sergei Golyshev, Shane Poage, Stefano Giardinelli, Steve Yan, Terry Presley, Tim, TobiasLindemann, Tom Harrison, Vipula De Silva, Waifer X, Walliang Jacques, Will Kalman.

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Messier 101 The Pinwheel Galaxy (Crowd Image), Morten Balling