Contains: NGC 6946, NGC 6939
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NGC 6946 Fireworks galaxy and NGC 6939

Technical card

Imaging telescope or lens: Skywatcher Explorer 200PDS

Imaging camera: QHYCCD QHY9M

Mount: Skywatcher NEQ6 PRO Synscan

Guiding telescope or lens: Skywatcher 9x50 finderscope

Guiding camera: QHYCCD QHY5L-IIc

Focal reducer: Baader MPCC Mk III

Software: Pixinsight

Filters: Baader Red 2"Baader L 2''Baader Blue 2"Baader Green 2"

Accessories: QHYCCD QHY 2" Filter wheelSeletek Armadillo

Resolution: 3271x2476

Dates: Aug. 31, 2016

Baader Blue 2": 5x300" -20C bin 1x1
Baader Green 2": 5x300" -20C bin 1x1
Baader L 2'': 10x300" -20C bin 1x1
Baader Red 2": 5x300" -20C bin 1x1

Integration: 2.1 hours

Flats: ~10

Bias: ~100

Avg. Moon age: 28.68 days

Avg. Moon phase: 0.82% job: 1221396

RA center: 308.392 degrees

DEC center: 60.391 degrees

Pixel scale: 1.107 arcsec/pixel

Orientation: 0.787 degrees

Field radius: 0.630 degrees

Locations: Puolivälinkangas - Oulu, Oulu, Finland


This session broke my streak of winnage - my tarpalin had caught with the counter weight bar and caused some interesting guiding results. I had to ditch some of the night's luminances, and even then the stars are a bit oval-shaped.




Sky plot

Sky plot


NGC 6946 Fireworks galaxy and NGC 6939,