Messier 101

From Wikipedia, the free encyclopedia

"The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on spiral galaxy distanced 21 million light-years away from earth in the constellation Ursa Major. First discovered by Pierre Méchain on March 27, 1781, it was communicated to Charles Messier who verified its position for inclusion in the Messier Catalogue as one of its final entries."

 

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Date :  March 2012
Location : Arizona Sky Village, Portal, Arizona

Equipment used :
 Lens or telescope -- AP 130 EDF with Field Flattner
 Mount -- AP 1200
 Camera -- QSI 583wsg with Lodestar guider


Acquistion Software : ACP, MaxIm DL, Focusmax
Processing Software : MaxIm DL, Photoshop

Exposure Detail : HaL R(Ha)GB combine      Total hours  14

Filter

# exposures

Time (sec)

Binning

Red

20

240

2X2

Green

20

240

2X2

Blue

20

240

2X2

Lum

19

480

1X1

Ha

10

2700

1X1

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