Wednesday, February 7, 2018

Supernova 2018gv in the Spiral Galaxy NGC 2525

Supernova 2018gv (Type Ia -- white dwarf explosion)  in the Spiral Galaxy NGC 2525 (constellation Puppis)
6 Feb 2018 20:22 UT
The supernova is marked by dashes.
A photometry in the Green channel [TG] gives magnitude 12.93+-0.04. A magnitude of the galaxy is about 11.6m, so the galaxy only in several times brighter then the exploding star.
Distance ~50 mio l.y.
Crop 30x30 arcmin, North is up.

Canon EOS 600D + SkyWatcher 150/750
50x30s; ISO=800

Friday, January 26, 2018

Comets in January 2018

Two relatively bright comets captured in January 2018.

Place: Kyiv (Osokorky district)
Equipment: Canon EOS 600D + Sky Watcher 10575 OTAW / EQ5 motorized
Processing: IRIS, FITStacker, Fitswork4, RawTherapee

Comet C/2017 T1 (Heinze)
2018-01-08 16:09-17:09 UT. Comet position in the frame with stars corresponds to 16:09 UT.
FOV = 40x40 arcmin, North is up.
Processing: IRIS, FITStacker, Fitswork4, RawTherapee

Comet C/2016 R2 (PANSTARRS)
68x30s ISO 1600
2018-01-10 19:49 UT (mid of series)
FOV = 40x25 arcmin, North is up
The blue color of the coma caused by ionized carbon monoxide CO+. Last time a comet with such a high content of CO was observed in 1962.

Tuesday, October 24, 2017

Supernova sn 2017gxq in Ursa Major (2)

Another picture of sn 2017gxq in NGC 4964 (Ursa Major). Now parent galaxy is visible as a small comet-like nebula (with longer total exposure and better atmosphere). My estimation gives the brightness of the supernova is comparable with the total brightness of the galaxy!

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.

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)

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)