Hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  Hourglass nebula  ·  IC 1274  ·  IC 1275  ·  IC 4685  ·  Lagoon nebula  ·  M 20  ·  M 21  ·  M 8  ·  NGC 6514  ·  NGC 6523  ·  NGC 6526  ·  NGC 6530  ·  NGC 6531  ·  NGC 6544  ·  NGC 6546  ·  NGC 6559  ·  The star 11Sgr  ·  The star 4Sgr  ·  The star 7Sgr  ·  The star 9Sgr  ·  Trifid nebula
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M8 and M20, 



    
        

            Yuichi Kawamoto
M8 and M20
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M8 and M20

Technical card

Imaging telescopes or lenses: Borg 55FL  ·  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 Reducer 0.8x DGQ55 [7880]  ·  Borg 7108

Software: Astroplace.net APT

Filters: IDAS HEUIBII


Dates:April 23, 2017

Frames:
IDAS HEUIBII: 18x140" ISO1600
IDAS HEUIBII: 12x300" -20C bin 1x1

Integration: 1.7 hours

Darks: ~10

Flats: ~50

Flat darks: ~50

Bias: ~50

Avg. Moon age: 26.18 days

Avg. Moon phase: 12.18%


Basic astrometry details

Astrometry.net job: 1605310

RA center: 18h 5' 30"

DEC center: -23° 34' 22"

Pixel scale: 3.631 arcsec/pixel

Orientation: -179.046 degrees

Field radius: 2.898 degrees


Resolution: 4489x3589

Locations: Fujimi Highland, Fujimi cho, Suwa, Nagano Prefecture, Japan

Description

It was cloudy all the night but miraculously clear only one hour before dawn.

Comments

Revisions

  • M8 and M20, 



    
        

            Yuichi Kawamoto
    Original
  • Final
    M8 and M20, 



    
        

            Yuichi Kawamoto
    B

Sky plot

Sky plot

Histogram

M8 and M20, 



    
        

            Yuichi Kawamoto