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Contains:  Owl nebula, M 97, NGC 3587
Getting plate-solving status, please wait...
M97 during 95% moon light with RGB data only, 


            Marcus Wögerer
M97 during 95% moon light with RGB data only

M97 during 95% moon light with RGB data only

Technical card

Resolution: 1788x1632

Dates:April 21, 2019

Frames:Baader L 31mm (UV & IR cut): 15x720" ISO200

Integration: 3.0 hours

Darks: ~9

Flats: ~50

Bias: ~50

Avg. Moon age: 16.95 days

Avg. Moon phase: 94.71%

Bortle Dark-Sky Scale: 3.00

Temperature: 6.00 job: 2655539

RA center: 168.713 degrees

DEC center: 55.019 degrees

Pixel scale: 1.054 arcsec/pixel

Orientation: 358.166 degrees

Field radius: 0.354 degrees

Locations: Ebenwaldhöhe (Ebenwald 14 Parkplatz), Kleinzell, Niederösterreich, Austria

Data source: Traveller


The sky was clear, sometimes windy, but good transparency @ a dark location.

Let´s use the time to make an experiment, capture DSO during almost full moon.
- capture a object with enough brightness
- near zenit to reduce influence of moon light.
- use a low sensitivity setting on DSLR to get long exposure time per light (200ASA)-- 12min per light

Result: all lights have blue backlight, but quite good visible M97, and a lot of small galaxies in the background.

In future, I will make more small PN during moon brightness. at 200ASA the amp glow protection makes nonsense, that why you see the lines. Only a rotate like a rotating dithering would help.



Marcus Wögerer
License: None (All rights reserved)

Sky plot

Sky plot


M97 during 95% moon light with RGB data only, 


            Marcus Wögerer