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Contains:  Benetnasch (ηUMa), The star Alkaid
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3D Catalina and Alkaid - for crossed eyes free viewing, 



    
        

            Tony Cook
3D Catalina and Alkaid - for crossed eyes free viewing
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3D Catalina and Alkaid - for crossed eyes free viewing

Technical card

Imaging telescopes or lenses: Televue TV-85

Imaging cameras: canon 450D

Mounts: 10 Micron 1000 HPS

Focal reducers: TeleVue TRF-2008 0.8x

Software: Russle Croman GradientXTerminator  ·  Noel Carbonni Astrotools  ·  Mike Unsold Images Plus  ·  Photoshop CS 2


Dates:Jan. 15, 2016

Frames: 99x240" ISO240

Integration: 6.6 hours

Darks: ~72

Flats: ~50

Flat darks: ~50

Avg. Moon age: 5.80 days

Avg. Moon phase: 33.47%


Basic astrometry details

Astrometry.net job: 926199

RA center: 13h 51' 59"

DEC center: +50° 9' 46"

Pixel scale: 2.259 arcsec/pixel

Orientation: 88.318 degrees

Field radius: 2.232 degrees


Resolution: 5686x4276

Locations: Home, Bramhope, West Yorkshire, United Kingdom

Data source: Backyard

Description

This is a 3D version of the Catalina and Alkaid image seen here

The right hand panel was imaged on the morning of 15th January 2016. This shows the comet it its correct position for that date. The left hand panel contains the extra information for your eyes and brain to reconstruct the image with 3D perspective. To do this another image of the comet taken 24 hours later (and over 2 degrees further away) was registered into this star field. In the 24 hour interval our viewpoint from Earth changed sufficiently for the angle between the ion tail and dust tail to have been reduced by approximately 5 degrees. It is this change that provides the information for your brain to "see" 3D with the ion tail stretching into the distance. The final step was registering the day + 1 comet image such that both comet images share the same approximate vanishing point for the ion tail (just to the left of Alkaid) and also the comet heads are aligned horizontally. To see the 3D to best effect it is important to keep you head upright (no tilting your head to the left or the right).

This is an experimental 3D stereo pair image that is set up for Free Viewing using the Crossed Eyes method (see here or here for instructions)

If this does not work for you (the comet appears behind the stars) then try the swapped image pair for relaxed eyes viewing here

Comments

Author

Tonk
Tony Cook
License: Attribution-NonCommercial-NoDerivs Creative Commons
5282
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3D Catalina and Alkaid - for crossed eyes free viewing, 



    
        

            Tony Cook

In these public groups

Cloudy Nights
Comets Imaging