Hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  NGC 4395
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NGC4395, 



    
        

            Yuichi Kawamoto
NGC4395
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NGC4395

Technical card

Imaging telescopes or lenses: William Optics Star 71  ·  BORG 67FL

Imaging cameras: Canon EOS 6D  ·  QHYCCD QHY16200A Mono

Mounts: CEM60

Guiding telescopes or lenses: Takahashi GT-40

Guiding cameras: QHYCCD QHY 5L-II mono

Focal reducers: Borg 7108

Software: PixInsight 1.8

Filters: IDAS HEUIBII


Dates:March 4, 2017

Frames:
59x140" ISO1600
IDAS HEUIBII: 48x140" -20C bin 1x1

Integration: 4.2 hours

Darks: ~10

Flats: ~25

Bias: ~37

Avg. Moon age: 6.32 days

Avg. Moon phase: 38.82%


Basic astrometry details

Astrometry.net job: 1487857

RA center: 12h 25' 52"

DEC center: +33° 32' 56"

Pixel scale: 1.814 arcsec/pixel

Orientation: 179.888 degrees

Field radius: 1.345 degrees


Resolution: 4318x3138

Locations: Asagiri Plateau, Fujinomiya City, Shizuoka-City, Japan

Data source: Traveller

Description

Spring nights do not offer subjects to shoot for photographers like me, who has only short focus refractors... I tried to increase the apparent focal length virtually by enlarging the center of the image using image restoration processes Drizzle and Deconvolution. It is NGC 4395, a faint but has a relatively large diameter galaxy. Fainter than I thought, then obviously underexposure (1 h 52 min of L channel)...

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NGC4395, 



    
        

            Yuichi Kawamoto