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

M31 again

M31 Andromeda galaxy: a quick'n'dirty picture taken at the end of another session in the night 22/23 of July.

Setup: SkyWatcher 15075 OTAW Newtonian / EQ5 motorized + Canon 600D

11x30s @ISO1600

Supernova SN 2017eaw (3)

"Express shot" of the supernova (14x30s ISO=1600; SkyWatcher 15075 OTAW / EQ5 + Canon EOS 600D)

21-Jun-2017; Kyiv (Osokorky)

It seems that the supernova changes its color from bluish to yellowish, see the following picture:

M57 (remastered)

Another version of M57 nebula based on the material gathered during the night 28th-29th of Jun.
The nebula itself is better seen (then in the previous version) with its central white dwarf.

Night 28th-29th of Jun 2017; Kyiv
Field of view: 15x15 arcminutes; North is up

Setup: SkyWatcher 15075 OTAW / EQ5 motorized(no guiding) + Canon EOS600D
97*30s; ISO=800

M57

M57 "Ring" Nebula
Gaseous shell (~1 l.y. in diameter) surrounds dead star: a white dwarf (faint star in the center of the nebula). The white dwarf -- a remnant of the star, in fact, dead star's nucleus -- is hot enough to emit powerful ultraviolet radiation. That ultraviolet emission makes surrounding gases to glow.

Night 28th-29th of Jun 2017
Kyiv

North is up.

Setup: SkyWatcher 15075 OTAW / EQ5 motorized(no guiding) + Canon EOS600D
97*30s; ISO=800

Size of the field is 39.4 x 39.4 arcmin (by nova.astrometry.net). A faint galaxy is visile near the nebula:

Saturn

Yet another Saturn.
21-Jun-2017 ~23:10(UT+3)

SkyWatcher 15075 OTAW / EQ5 motorized + TeleVue Barlow x3 + Canon EOS 600D

3 x (10% of 5000frames). ISO=1600.

Processing: PIPP; AS!3; AstraImage(deconvolution); WinJupos; FITSwork4 (wavelets). RawTherapee.

Saturn's system 2017-06-21 22:53(UT+3)

Jupiter: The First Try of WinJupos

This is my first try of WinJupos: a program, that eliminates an effect of the rotation of a planet (if the effect is quite small) and allows to combine images taken during some period of time to improve a quality of the resulting image.

Three clips taken on 17th of May (with SW15075OTAW + Tele Vue Barlow x3 (1.25") + Canon EOS 600D) were recorded at 21:56, 21:59, and 22:03 UT+3 (times correspond to the end of the recording of each clip).

Those clips were processed using AS!3 and Registax6 (15% of 3600 frames for each clip were stacked and sharpened with wavelets).
Then the resulting images were derotated and compiled into the final image with WinJupos.
Finally, the image was additionally sharpened in Registax6 and postprocessed in FITSwork4 and RawTherapee.

2017-05-17 ~21:59(UT+3)

Kyiv