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Open Cluster
Messier 39


M39 2016 (click on the image to get a full resolution photo in a new window)
Coordinates/Direction : RA: 21h31m, DEC: +48o25'
Object size : -
Object magnitude : 5.5
Object : M39
Date : 2016-03-16
Time (UT) : 23:37 to 01:05
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, controlled by APT
Film/CCD : Raw
Exp. time : 60x60 seconds, iso800
Image process tool : DSS, Fitswork, Irfanview
Processing : crop, level, no cal dark&bias, only dithering
Weather : clear
Site : Sweden, Stockholm
Comment : When I took this image it was only 15 degrees above horizon, very difficult to handle all light pollution. It's a very beautiful open cluster. To see all the details use the link below.
More to know : Wikipedia:
https://en.wikipedia.org/wiki/Messier_39

Zoom in, PK93+ 2.1

PK93+ 2.1, planetary nebula
Coordinates/Direction : RA: 21h31m, DEC: +48o25'
Object size : -
Object magnitude : 13
Object : M39
Date : 2016-03-16
Comment : This was very exiting, when I looked closely at the image I found a weak colored dot. Investigations shows that it was a planetary nebula. It has the name PK93+ 2.1 and I never have heard of that name. Planetary nebulas are the out gazing of an old stars atmosphere, the star is dying! You find it in direction ten a clock halfway out from center in main image, look in the full resolution image above.
More to know : http://www.astrode.de/pk93s21.htm

He use a telescope with a diameter of 80cm, that collects 37 times more light compared to my telescope!


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