PESSTO Year2 - Final SOFI imaging reduction

General:

31/170 (18%) of merged SOFI images, excluding 4 images with no signal, with failed astrometry (corrected with PESSTOASTRO).

Vertical noise pattern, likely electronic in origin, in some of the merged images (~10-15%). This is a more common feature during autumn 2013. Ghosts in some of the merged images (~10-15%). Artifacts in a few of the merged images (~5%). Full details are found below.

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20130816:

SN2013ek named incorrectly as SN2103ek (J, H, Ks). Some ghosts in the Ks-band image.

20130816:

Vertical noise pattern in the merged images:

PSNJ01591443+1901339_20130816_H_merge_57049_1.fits

SN2013dn_20130816_H_merge_57049_1.fits

SN2013dn_20130816_J_merge_57049_1.fits

SN2103ek_20130816_H_merge_57049_1.fits

20130828:

Ghosts and artifacts in the merged image:

SN2013ek_20130828_J_merge_57049_1.fits

Also some ghosts in the the merged image:

SN2013ek_20130828_Ks_merge_57049_1.fits

20130828:

Vertical noise pattern in the merged image:

PSNJ01591443+1901339_20130828_H_merge_57049_1.fits

20130913:

Telescope problems and clouds reported in the night log. No signal in the merged images:

SN2013fc_20130913_H_merge_57049_1.fits

SN2013fc_20130913_J_merge_57049_1.fits

SN2013fc_20130913_Ks_merge_57049_1.fits

These are the only SOFI data obtained during the night.

20131003:

According to the night report the SN2013ej imaging OB was by mistake started a 2nd time. Final reductions include two merged J-band images of SN2013ej:

4x(2x4.0) sec J-band image SN2013ej_20131003_J_merge_57050_1.fits, and

4x(2x4.0) sec J-band image SN2013ej_20131003_J_merge_57050_2.fits.

20131003:

According to the night report the SN2013fc imaging OB was interrupted, followed by an adjustment of the exposure times. Final reductions include two merged images of SN2013fc both in H and J-band:

4x(3x12.0) sec H-band image SN2013fc_20131003_H_merge_57050_1.fits,

4x(6x15.0) sec H-band image SN2013fc_20131003_H_merge_57050_2.fits,

4x(5x20.0) sec J-band image SN2013fc_20131003_J_merge_57050_1.fits, and

4x(1x15.0) sec J-band image SN2013fc_20131003_J_merge_57050_2.fits.

Merged H-band images of SN2013fc suffer from significant ghosts and artifacts. Some ghosts from the host galaxy are also in the J and Ks-band images, however these are minor effects compared to the H-band.

20131003:

Although there is no mentioning on this in the night report, the SN2009ip imaging OB was likely repeated a second time. Therefore the files have two different observation block ID numbers (100343749 or 100343750) and are merged into two final files by the pipeline:

12x(3x30.0) sec J-band image SN2009ip_20131003_J_merge_57050_1.fits (100343750), and

13x(3x30.0) sec J-band image SN2009ip_20131003_J_merge_57050_2.fits (100343749).

20131013:

Some ghosts in the merged images:

SN2013fc_20131013_J_merge_57050_1.fits

SN2013fc_20131013_H_merge_57050_1.fits

SN2013fc_20131013_Ks_merge_57050_1.fits

Also some artifacts and vertical noise in the H-band image.

20131013:

Vertical noise pattern in the merged images:

PSNJ01591443+1901339_20131013_H_merge_57050_1.fits

PSNJ01591443+1901339_20131013_J_merge_57050_1.fits

PSNJ01591443+1901339_20131013_Ks_merge_57050_1.fits

SN2013fc_20131013_H_merge_57050_1.fits

20131014:

For the merged final image, the pipeline is not correctly aligning the K-band images of SN2012ca, which were obtained after the re-rotation of the telescope during the 9th frame of the total of 18 frames. The following images were excluded:

SOFI.2013-10-15T01:08:37.713.fits

SOFI.2013-10-15T01:10:22.678.fits

SOFI.2013-10-15T01:15:02.725.fits

SOFI.2013-10-15T01:16:47.324.fits

SOFI.2013-10-15T01:18:32.225.fits

SOFI.2013-10-15T01:20:16.917.fits

SOFI.2013-10-15T01:22:04.975.fits

SOFI.2013-10-15T01:23:49.624.fits

SOFI.2013-10-15T01:25:34.522.fits

SOFI.2013-10-15T01:27:19.125.fits

20131014:

In the Ks-band sequence of PSNJ01591443+1901339 (16 target frames and 16 separate sky frames), the last sky image (ORIGFILE sky_K_0016.fits)

SOFI.2013-10-14T08:44:59.706.fits

has a different observation block ID number (100344446), compared to all the other Ks-band files of this target (100344432). The PESSTO pipeline would not include this frame in the Ks-band reduction of PSNJ01591443+1901339 and the pipeline cannot reduce a single SOFI file. Therefore the file has not been included in the reductions.

20131014:

Vertical noise pattern in the merged images:

SN2009ip_20131014_H_merge_57050_1.fits

SN2009ip_20131014_Ks_merge_57050_1.fits

SN2013fs_20131014_H_merge_57050_1.fits

SN2013fs_20131014_J_merge_57050_1.fits

SN2013fs_20131014_Ks_merge_57050_1.fits

20131015:

Vertical noise pattern in the merged image:

PSNJ01591443+1901339_20131025_H_merge_57050_1.fits

20131025:

The J-band imaging OB of OGLE-2013-SN-079 was repeated twice. Therefore the files have different observation block ID numbers and are merged into three final files by the pipeline:

12x(3x30.0) sec J-band image OGLE-2013-SN-079_20131025_J_merge_57050_1.fits,

12x(3x30.0) sec J-band image OGLE-2013-SN-079_20131025_J_merge_57050_2.fits, and

12x(3x30.0) sec J-band image OGLE-2013-SN-079_20131025_J_merge_57050_3.fits.

20131025:

Some ghosts in the merged images:

OGLE-2013-SN-079_20131025_J_merge_57050_1.fits

OGLE-2013-SN-079_20131025_J_merge_57050_2.fits

OGLE-2013-SN-079_20131025_J_merge_57050_3.fits

20131102:

According to the night log, during the 2nd set of Ks-band images of SN2013fc the telescope guide probe got stuck while offsetting and only 5/8 OFF sky frames were obtained (full 8/8 ON frames). Reduction was carried out using all the available frames.

20131102:

Ghosts and artifacts in the merged images:

SN2012ca_20131102_H_merge_57050_1.fits

SN2012ca_20131102_J_merge_57050_1.fits

20131102:

Some ghosts in the merged image:

SN2013ek_20131102_J_merge_57050_1.fits

20131102:

Vertical noise pattern in the merged images:

SN2012ca_20131102_J_merge_57050_1.fits

SN2013fc_20131102_H_merge_57050_1.fits

20131112:

Vertical noise pattern in the merged image:

SN2013fc_20131112_H_merge_57050_1.fits

20131209:

Significant ghosts and artifacts in the merged image:

SN2013fc_20131209_H_merge_57050_1.fits

Some ghosts also in the merged images:

SN2013fc_20131209_J_merge_57050_1.fits

SN2013fc_20131209_Ks_merge_57050_1.fits

20140206:

PESSTOSOFIPHOT derives a ZP for the merged J-band image of SN2012ec (PHOTZP = 25.21606666666666), however the WCS is not correct (ASTROMET = 2.87 5.32 5). Astrometry was derived for the image SN2012ec_20140206_J_merge_57050_1.fits with PESSTOASTRO. PHOTZP is still likely incorrect in the merged images of SN2012ec

SN2012ec_20140206_H_merge_57050_1.fits

SN2012ec_20140206_J_merge_57050_1.fits

SN2012ec_20140206_Ks_merge_57050_1.fits

due to the extended host galaxy dominating the 2MASS sources in the field.

20140301:

Vertical noise pattern in the merged image:

LSQ13ddu_20140301_J_merge_57050_1.fits

20140423:

According to the night report some extra imaging of CSS140421-142042+031602 was obtained. The pipeline merged the images into the following files:

8x(6x15.0) sec H-band image CSS140421-142042+031602_20140423_H_merge_57051_1.fits,

2x(6x15.0) sec H-band image CSS140421-142042+031602_20140423_H_merge_57051_2.fits,

8x(5x25.0) sec J-band image CSS140421-142042+031602_20140423_J_merge_57051_1.fits,

2x(5x25.0) sec J-band image CSS140421-142042+031602_20140423_J_merge_57051_2.fits,

20x(9x10.0) sec Ks-band image CSS140421-142042+031602_20140423_Ks_merge_57051_1.fits, and

8x(9x10.0) sec Ks-band image CSS140421-142042+031602_20140423_Ks_merge_57051_2.fits.

20140430:

Clouds reported in the night log. No signal in the merged image:

CSS140421-142042+031602_20140430_J_merge_57051_1.fits

This is the only SOFI data obtained during the night.

20140504:

Some ghosts in the merged images:

CSS140424-133007-212728_20140504_J_merge_57051_1.fits

CSS140424-133007-212728_20140504_Ks_merge_57051_1.fits

20140506:

The 9 J-band target exposures of CSS140424-133007-212728 were likely obtained with a random dither pattern. However, the pipeline interprets the files as ON and OFF images of which 4 were used as ON and 4 OFF sky frames for the merged image:

CSS140424-133007-212728_20140506_J_merge_57051_1.fits