Tuesday, October 24, 2017
Friday, October 20, 2017
Supernova sn 2017gxq in Ursa Major
On 18-Oct-2017, I tried to picture a quite bright supernova sn 2017gxq, which exploded in a galaxy NGC 4964 (Ursa Major).
Despite the galaxy with the supernova was quite low in the sky (altitude ~29*) and in the direction near the city center (huge light pollution!) I managed to catch it.
Note that a parent galaxy is not visible at all (only very weak nebulosity could be mentioned).
My rough estimation of supernova's brightness is ~14.2m+-0.2
SkyWatcher 150/750 / EQ5 motorized + Canon EOS 600D; 20x32s; ISO=400. Processed with IRIS, green channel.
Despite the galaxy with the supernova was quite low in the sky (altitude ~29*) and in the direction near the city center (huge light pollution!) I managed to catch it.
Note that a parent galaxy is not visible at all (only very weak nebulosity could be mentioned).
My rough estimation of supernova's brightness is ~14.2m+-0.2
SkyWatcher 150/750 / EQ5 motorized + Canon EOS 600D; 20x32s; ISO=400. Processed with IRIS, green channel.
Wednesday, September 20, 2017
Messier 15 Globilar Cluster
Messier 15: a globular cluster with the very compact core; it is suspected that a black hole may exist in the center of the cluster.
Processing: IRIS (calibration, alignment), FITStacker (stacking, gamma, color correction), RawTherapee, FITWorks4, GIMP (SCNR by my plugin, BW+Color combining), FSViewer, crop, resize 50% of original.
The next picture is at 100% resolution, crop to field of view 15'
(after some deconvolution and contrast adjustment using AstraImage)
Processing: IRIS (calibration, alignment), FITStacker (stacking, gamma, color correction), RawTherapee, FITWorks4, GIMP (SCNR by my plugin, BW+Color combining), FSViewer, crop, resize 50% of original.
The next picture is at 100% resolution, crop to field of view 15'
Monday, September 18, 2017
Perseids 2017
I tried to catch some meteors from my backyard in the night from 11 to 12 of August. Haze and Moon make the sky to glow so I mentioned only several brightest meteors by eye (one of them was definitely not Perseid).
Using Canon EOS 600D with kit lens in the night from 11 to 12, after 1 a.m. local time I managed to catch two bright meteors: at 1:17 (brighter) and at 1:36.
Canon EOS600D + kit lens 18-55 @18mm f/3.5 ISO=1600 Tv=15s
The brightest meteor passed near Little Dipper (left). A part of Cassiopeia W is in the bottom-right corner.
Field of view: 40x41 degree.
Monday, September 11, 2017
Monday, July 31, 2017
Evolution of Supernova SN 2017eaw
A supernova in a galaxy NGC 6946 is changing its color from bluish to yellowish due to cooling of an expanding gaseous shell. The color change was already noticeably at the end of Jun.
SkyWatcher 150/750 + Canon EOS 600D ISO 1600. 186x30s (1st image; two sessions: May 20 and 27), 101x30s (2nd image, Jul 22)
Kyiv
SkyWatcher 150/750 + Canon EOS 600D ISO 1600. 186x30s (1st image; two sessions: May 20 and 27), 101x30s (2nd image, Jul 22)
Kyiv
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