M101 The Pinwheel Galaxy

 

M101 was among the first "spiral nebulae" identified as such. In smaller telescopes is visible only the central region of this galaxy. On images, M101 is revealed as one of the most prominent Grand Design spirals in the sky. The distance of M101 has been determined by the measurement of Cepheid variables with the Hubble Space Telescope in 1994/95 to be about 24 +/- 2 million light years and it has a linear diameter of over 170,000 light years .

M101 obtained through a refractor William Optics FLT 98/618; TeleVue 0,8 reducer/flattener; SBIG ST-8300C CCD; 15x6 minutes. Mount Celestron AVX, guider ZWO ASI120C

 

 

Image is taken with Celestron Pixcel 237 CCD Camera through a C8 at f:3,3. LRGB image is assembled of luminance image (25x30 second) and RGB image ( Red 11x30 second, Green 10x30 second and Blue 15x30 second). Processed in CCDSoft v5, AIP for Win and Photoshop.

 


(C) Copyright 1996 - 2020 by Andjelko Glivar. All rights reserved. This material may not be published in any form without permission.

 

 


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