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Globular Cluster
Messier 92


M92 globular cluster 2016
Coordinates/Direction : RA: 17h17m, DEC: +43o08'
Object size : 14'
Object magnitude : 6.3
Object : M92
Date : 2016-02-23, 02-25, 03-11
Time (UT) : -
Mount : EQ6 controlled by EQMOD
Guide : PHD2 in dithering mode and QHY5 camera off-axis
Lens/telescope : TS130, 910mm f7 (682mm, f5.3)
Corrector/Barlow : Riccardi flat field corrector 2.5" x0.75
Filter : none
camera : Canon 6D
Film/CCD : Raw
Exp. time : 105x60 + 57x120 seconds, iso800
Image process tool : DSS, Fitswork, Irfanview
Processing : resize, level, cal dark&bias
Weather : clear
Site : Sweden, Stockholm
Comment : M92, a complement with 120 seconds exposures and stacked together with the older 60 seconds exposures. The auto guiding was a little bit unstable this time. Stars FWHM about 4".

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M92 globular cluster 2016
Object : M92
Date : 2016-02-23, 02-25, 03-11
Time (UT) : -
Comment : A zoom in on the core.

M92 globular cluster 2015
Object : M92
Date : 2015-03-22
Time (UT) : 23:00 to 00:14
Mount : EQ6 controlled by EQMOD
Lens/telescope : TS130, 910mm f7 (682mm, f5.3)
Corrector/Barlow : Riccardi flat field corrector 2.5" x0.75
Filter : none
camera : Canon 5D
Film/CCD : Raw
Exp. time : 60x60 seconds, iso800
Image process tool : Fitswork, Irfanview
Processing : resize, level, cal dark&bias
Weather : clear
Site : Sweden, Stockholm
Comment : M92 together with M3 and M13 is relative easy to get on photo, no need of very long exposure time.
More to know : Wikipedia:
https://en.wikipedia.org/wiki/Messier_92

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