Hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  M 92  ·  NGC 6341
Getting plate-solving status, please wait...
A "flash" visit., 



    
        

            gigiastro
A "flash" visit.
Powered byPixInsight

A "flash" visit.

Getting plate-solving status, please wait...
A "flash" visit., 



    
        

            gigiastro
A "flash" visit.
Powered byPixInsight

A "flash" visit.

Technical card

Imaging telescopes or lenses: Canon EF 400mm f/5,6L USM

Imaging cameras: Canon EOS 60Da

Mounts: iOptron ZEQ25GT

Software: PixInsight  ·  DeepSkyStacker 3.3.4  ·  Noel Carboni's StarSpikes Pro 4  ·  Noel Carboni's Actions  ·  Elements Photoshop


Dates:May 11, 2018

Frames: 376x30" (3h 8')

Integration: 3h 8'

Avg. Moon age: 25.33 days

Avg. Moon phase: 18.64%


Basic astrometry details

Astrometry.net job: 2075715

RA center: 17h 17' 8"

DEC center: +43° 7' 58"

Pixel scale: 2.262 arcsec/pixel

Orientation: 358.635 degrees

Field radius: 0.784 degrees


Resolution: 2176x1222

Locations: Home, Mestre, Venezia, Italy

Data source: Backyard

Description

Something has 'grazed' the globular cluster M 92.

The transit actually occurred much closer than the 26,000 light years that separate us from the star cluster: it took place either in orbit around the Earth, in the case of a satellite, or in the atmosphere, in the event of a meteor: if it was a satellite, it had a 'flare' (short exposure to the Sun) just near M 92.

In any case, the meeting seems to give a certain charm to the image of the celestial object.

The event involved a single frame out of 376, all of 30 seconds each, with which the image was built: a special processing technique made it possible to recover the trail while merging all frames together (normally the stacking program would remove it, considering it "noise".

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A "flash" visit., 



    
        

            gigiastro