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M51, The Whirlpool Galaxy, 05-06-2019, 


            Martin (Marty) Wise

M51, The Whirlpool Galaxy, 05-06-2019

Technical card

Imaging telescope or lens:Orion ED80 APO F/7.5

Imaging camera:Canon EOS 650D / Rebel T4i

Mount:Orion Sirius EQ-G (HEQ5)

Guiding telescope or lens:Orion ST80 ST80

Guiding camera:ZWO ASI174MM ASI174MM

Focal reducer:Orion .8X Focal Reducer

Resolution: 1511x1080

Dates:May 6, 2019

Frames: 31x360" ISO800 bin 1x1

Integration: 3.1 hours

Flats: ~20

Bias: ~20

Avg. Moon age: 1.55 days

Avg. Moon phase: 2.68%

Bortle Dark-Sky Scale: 4.00 job: 2682474

Locations: Home Observatory (Concrete Pier), Chiefland, Florida, United States

Data source: Backyard


1:1 crop from 4.3um pixels at 1.85"/pixel scale

31 Light Frames x 360 seconds
20 Flat Frames
20 Bias Frames



Martin (Marty) Wise
License: None (All rights reserved)


M51, The Whirlpool Galaxy, 05-06-2019, 


            Martin (Marty) Wise