NGC 3718 (Christoph Lichtblau)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: NGC 3718 · NGC 3729

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NGC 3718

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NGC 3718

This one was a hard nut to crack. I wanted to see the fainter spiral arms on the pic. Not so easy under my nightsky light pollution. But in the last weeks we had some very clear nights and I waited to capture the luminance images until this part reaches the most dark region in my sky in the northwest short before dawn. This I did over 4 nights. For color I used bin 2x2 which I exposed always before the luminance shots. Than of course a lot of processing work to get out the fainter parts. The CLS/CCD filter helps for contrast, but I think I am loosing so fainter stars with it. With the UV/IR filter the backround gets to bright. Red and blue was quite ok but green is always difficult under my conditions. I think, I can not achieve more deepness with more integration time any more.....hope you like it like it is.

CS to you all

I put this image from the staging into the public area and can not set any technical data. Maybe a bug??

Edge 11 HD

ASI 6200 mm pro

Celestron reducer .7 for Edge 11 HD

ASI 120 mc for guiding

Williams Megrez 90 for guiding

Baader filters 2"

CLS / CCD Filter

L 95x300sec gain 300 bin 1

RGB all 30x350sec gain 350 bin2

Original
Final
E

E

Description: Complete new processing with BXT

Uploaded: ...

Broadband under Bortle 7/8/9

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
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Status	Advanced success
Started	...
Astrometry.net job	7292080
PixInsight job	3U54BDPG280BAAWT3YLELLZDKFNJ72J8
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	11h33m07s.201
RA (top/left)	11h35m00s.546
RA (top/right)	11h31m56s.607
RA (bottom/right)	11h31m14s.596
RA (bottom/left)	11h34m16s.829

Dec (center)	+53°04′39″.19
Dec (top/left)	+53°12′26″.86
Dec (top/right)	+53°20′06″.26
Dec (bottom/right)	+52°56′45″.91
Dec (bottom/left)	+52°49′10″.99

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NGC 3718

NGC 3718

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NGC 3718

NGC 3718

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