Comet 252P/LINEAR: continued

The comet is substantially dimmer than it was in the beginning of April. Nevertheless, it is much brighter than expected (~18m by http://theskylive.com/comets?s=252p).

2016-05-01 23:36-23:44 (UT+3)
Kyiv (Osokorky)

The comet is near the center, a bright star to the left is Alpha Ophiuchi.
An open cluster IC 4665 is visible near the bottom edge, to the left of the center, close to Beta Ophiuchi.
Image size is 15 x 15 deg (by nova.astrometry.net).
Actually, we only see an inner part of comet's coma. The comet itself is quite diffuse, outer parts of coma are too faint to be visible in the image taken in the light-polluted area with short exposures.

Canon EOS 600D + EF 50mm f/1.8 II; ISO3200; F/2.8; 73x3s.
Processing: DSS; FITStacker; RawTherapee; NeatImage; FSViewer.

Comet 252P/LINEAR #2

The comet this morning just before dawn (last frames were actually captured at twilight) is in front of Ophiuchus.
Place: Kyïv (Osokorky)
Time: 2016-04-12 04:55-04:59(UT+2).

Equipment: Canon 600D + EF 50mm f/1.8 on tripod; 50x3,2s; f/2.5; ISO=3200.

Processing: DSS, FITStacker, RawTherapee, FSViewer.

Size (by nova.astrometry.net) is 16.5 x 11 deg.

Here is zoomed part of the image (2x2 degree)

Comet 252P/LINEAR (remastered)

Image of a comet 252P/LINEAR captured on 5 Apr remastered.
150 frames (3.2s each) were processed in DSS using bigger region (resulted image size is 14.8x8.34 degrees). Gradient background was removed using FITStacker, final processing was made using FSViewer, NeatImage, and RawTherapee.
Except the comet, several deep sky objects are visible in the image: globular clusters M14 (to the upper left-left of the comet), M10 (in the upper-right corner of the picture), and NGC 6366 (dim spot to the right of the comet). According to nova.astrometry.net, a size of the picture is 14.8 x 8.34 deg.

*** Image updated on 2016-04-15: contrast enchanced ***

Comet 252P/LINEAR

Comet 252P/LINEAR last night from Kyiv (Osokorky). While sky was clear, substantial atmospheric  haze dims stars. Comet is quite visually bright while its predicted magnitude is low (expected ~14m only; last visual observations give brightness ~6m [cometbase.net]). Fuzzy orange "star" to the upper-left of the comet is globular cluster M14.
The comet is periodic (orbital period 5.33 years). This is near-Earth object, it passes quite close both Earth and Jupiter (Earth-Jupiter family comet). In the past, it probably was Jupiters Troyan.

Time: 2016-04-05 (4:24-4:36 UT+3).
Angular size of the image is 4x4 degree (by nova.astrometry.net).
Canon EOS 600D + EF 50mm f/1.8 II on tripod.
150 frames by 3.2s; f/2.5; ISO=3200

The image was made in two steps: initial 150 frames (3.2s) where groupped by 10 and stacked in DSS, then resulted 15 frames where stacked again with alignment by the comet.
To be honest, result with alignment by the comet differs a little from result made using alignment by stars.
Resulted image was treated with FITStacher (background subtraction and gamma-correction) and then postprocessed in RawTherapee.