M@H 101: Imaging from the city (Edoardo Luca Radice (Astroedo))

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 101 · NGC 5447 · NGC 5449 · NGC 5450 · NGC 5451 · NGC 5453 · NGC 5455 · NGC 5457 · NGC 5461 · NGC 5462 · NGC 5471 · Pinwheel galaxy

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M@H 101: Imaging from the city

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M@H 101: Imaging from the city

As for my previous picture of M99

the imaging session of this M101 was intended to test the latest gradient correction technique by Vicent Peris.

(the link to the original article can be found in the description of my M99 image)

M99 was a small target: the gradient correction is quite easy, so the idea was to test it on a larger target.

Here the reason why I choose M101.

IMHO this technique is going to be a MUST for city imagers

In version B you can see a direct comparison between original and corrected image

In version C you can see the large field image used for gradient modeling.

I took it with a Canon 60D at 800 ISO and an Letiz Elamrit - R 180 mm F 2.8 at F/4

140 x 20 sec subs.

Final
Original
B
C

C

Description: The reference image from the Canon 60D with the 180 mm lens used as a reference for the gradient modeling.

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Status	Advanced success
Started	...
Astrometry.net job	3454874
PixInsight job	VEEXV642C7ALJI0IRS5N6J841VEIQ62R
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	14h03m11s.373
RA (top/left)	14h04m47s.202
RA (top/right)	14h04m49s.140
RA (bottom/right)	14h01m33s.847
RA (bottom/left)	14h01m35s.100

Dec (center)	+54°21′31″.100
Dec (top/left)	+54°02′45″.63
Dec (top/right)	+54°40′11″.40
Dec (bottom/right)	+54°40′14″.71
Dec (bottom/left)	+54°02′48″.18

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M@H 101: Imaging from the city

M@H 101: Imaging from the city

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M@H 101: Imaging from the city

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