Comet 46P/Wirtanen close to the Pleiades

            Comet 46P/Wirtanen close to the Pleiades (M45) on 16 December 2018 (imaged from Southern Africa, after a thunder shower and in between clear gaps in partly clouded conditions).

The Comet's tail was only visible in darker skies with longer exposures, but it has a beautiful bright green coma. The green colour is caused by Cyanogen (CN) and diatomic Carbon (C2), which glows in the green part of the Electromagnetic Spectrum of Light when illuminated by the Sun in space.

Geocentric Distance:
0.0775 AU (Astronomical Unit)
30 Lunar distances
11.5 million km
7.1 million miles

Gear:
Nikon AF-S NIKKOR 200-500mm f/5.6E ED VR Lens.
Celestron AdvancedVX Telescope Mount.
Optolong L-Pro Clip-In Filter for Nikon.
Nikon D750 DSLR

Lights/Subs:
46 x 60 sec. ISO 320 exposures.
Calibration Frames:
30 x Bias
20 x Darks

Processing:
Pre-Processing and Linear workflow in PixInsight,
and finished in Photoshop.

Martin

   

Taken on: December 16, 2018

Tags:

Comet 46P

Wirtanen

M45

star cluster

Seven Sisters

Messier 45

D500

200-500mm

Nikon

Nikkor

Astronomy

Astrophotography

Martin

Heigan

dslr astrophotography

lens astrophotography

Celestron AVX

Southern Hemisphere

December 2018

South Africa

Astrometrydotnet:id=nova3109475

Astrometrydotnet:status=solved « less

Sets appears in: • Martin Heigan

Groups appears in: • astrometry • ARTISTIC EXPRESSION - ASTROPHOTOGRAPHY - By Invitation Only

Camera: Nikon D750, f/5.6, 60 sec, 200mm, ISO 3200 (more info) (hide info)

Camera:	Nikon D750
Lens:	200.0-500.0 mm f/5.6
Aperture:	f/5.6
Exposure Time:	60
Focal Length:	200mm
ISO:	3200
Exposure Bias:	0 EV
Flash:	Off, Did not fire
Exposure Program:	Manual
Exposure Mode:	Manual
Metering Mode:	Center-weighted average
White Balance:	Manual
Scene Capture Type:	Landscape
Sharpness:	Hard
Color Space:	Uncalibrated
Software:	Adobe Photoshop CS6 (Windows)
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