Pascal Hilkens Astro Home Page
Sunday, November 15, 2020
Saturday, November 14, 2020
Open star cluster NGC654 with a Supergiant
Open star cluster NGC654 is located in constellation Cassiopeia nd about 7800ly away from Earth. The bright star seen south of the cluster is a supergiant classified as F5Ia.
Setting: Nikon D7500, TAL200K f/8.5, ISO6400 and 10x60s exposure time. Cameracontrol using DigiCamControl and stellarium connected to mount. Stacking with APP and final editing using CS4 and DeNoise AI.
Wednesday, November 11, 2020
My first succes downloading NOAA weather Image
Today I was able to succesfully downloading a weather image from one of the three NOAA satellites. The image was taken from NOAA 18 using ESA ESTEC Websdr. The soundwave was processed using WXtoIMG and the result was edited using CS4 and DeNoise AI.
Tuesday, November 10, 2020
SN2020jfo in Galaxy M61 still visible after 170days
I requested a new picture of M61 with the COAST C14 telescope on Tenerife. Comparing this pictures with previous pictures of SN2020jfo in May (my picture with TAL200k) and those one made with COAST in July, it seems to me the supernova is still visible. This time the M61 picture was much better then the previous one earlier this month, so comparing was much easier. See also my previous blog.
Sunspot AR2781 and Helioviewer
With support of Helioviewer I was able to define P and B0 of the Sun :
P is the position angle of the north end of the axis of rotation, measured positive when east of the north point of the disk and
Bo is the heliographic latitude of the centre of the sun disk.
P is the position angle of the north end of the axis of rotation, measured positive when east of the north point of the disk and
Bo is the heliographic latitude of the centre of the sun disk.
Sunspot AR2781 ND3.8, Solar Continuum & IR Cut filter
The picture is combination of two pictures :
Nikon D7500 - TAL200K f/8.5 ND3.8 IR & Cut filter
Nikon D7500 - TAL200K f/8.5 ND3.8 Solar Continuum & IR Cut filter
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