M81 & M82 from My Backyard (David McClain)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's nebulae · M 81 · M 82 · NGC 3031 · NGC 3034 · NGC 3077

M81 & M82 from My Backyard, David McClain

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M81 & M82 from My Backyard

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M81 & M82 from My Backyard

It will be interesting to see how much better the dark site in New Mexico will do on this one.

... well, I can see from Paddy's work on this one, and the NASA APOD, that from my backyard there is no hint of IFN. Heh! So much for my yellow-orange zone viewing.

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Maybe not quite as pretty... but the crud down near the noise floor is real IFN. And that little blue smudge just beneath M81 is also real.

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Carefully brought out more detail in M81. Tried to enhance the IFN, but there is so little to work with that not much accomplished.

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Improve contrast of the IFN by deemphasizing high frequency component layers using MLT.

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Final rev - more work selectively stretching the IFN to make it more visible. This is about the limit of what I can see from my backyard on the outskirts of Tucson.

This image set also used my guider kicker to overcome the changing differential flexure in the system. Average ADU in each raw frame was around 15% of full well capacity. My wells fill up from sky background after 1/2 hour. (I hate to imagine what it would be without the LP filter...)

Original
B
C
Final
G

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
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Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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Status	Basic success
Started	...
Astrometry.net job	1085767
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M81 & M82 from My Backyard

M81 & M82 from My Backyard

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M81 & M82 from My Backyard

M81 & M82 from My Backyard

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