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Contains:  NGC 5477, M 101, NGC 5457
Getting plate-solving status, please wait...
M101 The Spiral Galaxy, 


            Sandra Repash
M101 The Spiral Galaxy

M101 The Spiral Galaxy

Technical card

Resolution: 1391x1039

Dates:June 30, 2019

Frames:Astrodon 31mm L Tru-Balance E-Series Gen 2: 14x300" bin 1x1

Integration: 1.2 hours

Darks: ~4

Flats: ~6

Bias: ~25

Avg. Moon age: 27.04 days

Avg. Moon phase: 6.83%

Bortle Dark-Sky Scale: 5.00 job: 2777507

RA center: 14h 3' 1"

DEC center: +54° 22' 40"

Pixel scale: 2.785 arcsec/pixel

Orientation: 67.970 degrees

Field radius: 0.672

Locations: Lehigh Valley Amateur Astronomy Association Pulpit Rock Observatory, Lenhartsville, Pa, United States

Data source: Traveller


First attempt with CCD mono luminance and calibration frames. Had trouble with the flats, captured very few and forgot to turn on the cooling :).



Sandra Repash
License: None (All rights reserved)

Sky plot

Sky plot


M101 The Spiral Galaxy, 


            Sandra Repash