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

Supernova SN 2017eaw (2)

Supernova SN 2017eaw in a galaxy NGC 6946 (Fireworks Galaxy) is still shining as billion suns (the supernova is marked by green dashes -- see the second picture beneath). The galaxy is distanced from us at approximately 22,000,000 light years.

Most of the stars in the picture (except the supernova) belongs to our Milky Way. An open star cluster NGC 6939 is visible in the upper right corner (a distance to it is about 4,000 light years).

A picture was taken in the night 27-28 of May 2017 from Kyiv.

Setup: Sky Watcher 15075 OTAW / EQ5 motorized (no guiding) + Canon EOS 600D @ ISO=1600.

There were 91 light frames in total @ Tv=30s (total exposure 45.5 min) plus 21 darks, 21 biases, and 10 flats.

This is a combo image: synthetic L-channel overlapped by RGB image.

Image size: 47,3x47,3 arcmin [nova.astrometry.net]

Supernova SN 2017eaw

Supernova SN 2017eaw in Fireworks galaxy (NGC 6946). 

The supernova is marked by green dashes (to the upper-right from the galaxy).

Other stars (visible in the picture) belong to our own galaxy, Milky Way.

Captured near local midnight 20-21 May 2017 from Kyiv.

Setup: SkyWatcher 15075OTAW/EQ5 motorized (no guiding), Canon EOS 600D

95x30s ISO=1600

Processing: IRIS, FITStacker, RawTherapee, FITSwork4

A position of the supernova is marked by green dashes in the next picture:

Location of the galaxy NGC 6946 (by nova.astrometry.net)

Another view: