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 in 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

Asteroid Florence

Asteroid Florence
01 Sep 2017, 22:45..2315 (UT+3); Kyiv
Field of View: 30 arcmin

Canon EOS 600D + SkyWatcher 15075 OTAW / EQ5 Motorized
87 x 15s (+5s gap between frames)

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)

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

Monday, July 17, 2017

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:

Friday, July 7, 2017

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