Hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  M 106  ·  NGC 4217  ·  NGC 4232  ·  NGC 4248  ·  NGC 4258
Getting plate-solving status, please wait...
M106 under a bright moon, 



    
        

            Stefan Böckler
M106 under a bright moon
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M106 under a bright moon

Getting plate-solving status, please wait...
M106 under a bright moon, 



    
        

            Stefan Böckler
M106 under a bright moon
Powered byPixInsight

M106 under a bright moon

Technical card

Imaging telescopes or lenses: Sky-Watcher 150/750 Black Diamond

Imaging cameras: Canon EOS 1100Da

Mounts: Sky-Watcher EQ6 R pro

Guiding telescopes or lenses: Orion Mini 50mm guidescope

Guiding cameras: ZWO ASI 120 MM Mini

Software: ASTAP  ·  PHD2 Guiding phd 2  ·  StarTools  ·  N.I.N.A. Nighttime Imaging 'N' Astronomy  ·  SharpCap Pro SC

Filters: Optolong UV/IR Cut 2"

Accessory: Baader Planetarium 2" Mark III Multi Purpose Coma Corrector - MPCC


Dates:March 24, 2021

Frames:Optolong UV/IR Cut 2": 67x300" ISO1600

Integration: 5.6 hours

Flats: ~20

Flat darks: ~20

Avg. Moon age: 10.14 days

Avg. Moon phase: 77.70%

Bortle Dark-Sky Scale: 4.00


Basic astrometry details

Astrometry.net job: 4351289

RA center: 12h 17' 7"

DEC center: +47° 13' 8"

Pixel scale: 1.987 arcsec/pixel

Orientation: 349.713 degrees

Field radius: 0.877 degrees


Resolution: 2644x1764

Data source: Backyard

Description

Processing these galaxies under a bright 80% moon has been quite a struggle. Bringing out the outer parts of M106 and controlling background noise without clipping it required several attempts. In the process I noticed that ASTAP did a much better job in stacking than DSS does. At least under these circumstances. Separating the outer arms from the background has been much easier with the ASTAP stack.

In the end, I am fine with the result and happy that it wasn't a waste of time trying to image a broadband target under a bright moon. Hope you like it!

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