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Comet 252P Linear in northern Ophiuchus, 


            Tony Cook
Comet 252P Linear in northern Ophiuchus

Comet 252P Linear in northern Ophiuchus

Technical card

Resolution: 4254x2800

Dates:May 2, 2016

Frames: 45x300" ISO800

Integration: 3.8 hours

Darks: ~36

Flats: ~25

Flat darks: ~25

Avg. Moon age: 24.60 days

Avg. Moon phase: 25.05%

Mean SQM: 20.99 job: 1065814

RA center: 17h 15' 43"

DEC center: +8° 48' 36"

Pixel scale: 1.353 arcsec/pixel

Orientation: 90.607 degrees

Field radius: 0.957

Locations: Dark Sky Site, Kirby Malzeard, North Yorkshire, United Kingdom


This is a first light test image for a newly acquired Takahashi TOA-130NS refractor. I used a Televue REF3007 x0.8 field flattener/reducer with a Canon 450D as a temporary measure to conduct this first test. The FF/FR isn't optimal for this scope so I'm waiting for a matched Takahashi x0.75 FF/FR



Tony Cook
License: Attribution-NonCommercial-NoDerivs Creative Commons

Sky plot

Sky plot


Comet 252P Linear in northern Ophiuchus, 


            Tony Cook

In these public groups

Comets Imaging
Cloudy Nights