DRAFT
2026-03-07 20:04:54
Type: Object/s-Data/Analysis
Bibcode: 2026TNSAN..60....1B
DAO photometric follow-up of selected transients - 2026A
Authors: D. D. Balam (Dominion Astrophysical Observatory, National Research Council of Canada)
Source Group: DAO_OTS
Keywords: Photometry
Abstract:
We present (SDSS) g&r filter photometric follow up observations of selected optical transients obtained using the 1.82-m Plaskett telescope of the (Dominion Astrophysical Observatory) National Research Council of Canada during the period of UT 2026 January through march

Photometric observations obtained with the 1.82-m Plaskett telescope are differential (SDSS g&r filters) and measured from stars in either the Sloan Digital Sky Survey (Skyserver) or the Pan-STARRS release 1 (PS1) Survey - DR1. The photometric observations are contained in an attached table (see below - OTmags_260308.txt).

The transient host galaxy light in our photometric measurement is minimized via one of two methods: Reference images are downloaded from the PanSTARRS image access (Flewelling, H. A., et al.) and are convolved, using the nightly PSF to match our images. The reference is then subtracted from our co-added images. A secondary photometric standard is defined and retained on the subtracted image using a pixel mask. 

A second method involves creating a model galaxy, using the IRAF artdata packages, scaling it to the images and subtracting the host galaxy. The differential photometry  was then performed using Image Reduction and Analysis Facility (IRAF) (Tody, D. 1986, "The IRAF Data Reduction and Analysis System").

Note:  photometric redshifts are marked 'p' and spectroscopic redshifts are marked 's'. All host redshifts are via the SDSS Skyserver.


 

Show current TNS values
Catalog Name Reported RA Reported DEC Reported Obj-Type Reported Redshift Host Name Host Redshift Remarks TNS RA TNS DEC TNS Obj-Type TNS Redshift
TNS 2026cbp 05:49:25.252 +46:40:50.68 05:49:25.252 +46:40:50.68
TNS 2026cbr 04:48:57.952 +05:58:59.53 04:48:57.952 +05:58:59.53
TNS 2026cei 14:33:32.963 +53:26:22.42 14:33:32.963 +53:26:22.42
TNS 2026cgw 15:27:13.339 +36:26:24.50 SDSS J152713.23+362623.2 15:27:13.339 +36:26:24.50
TNS 2026emv 14:39:40.280 +43:05:16.65 14:39:40.280 +43:05:16.65
TNS 2026emx 05:09:25.708 +56:11:13.74 05:09:25.708 +56:11:13.74
TNS 2026enl 08:33:19.218 +29:50:49.02 08:33:19.218 +29:50:49.02 SN II 0.049004
TNS 2026eot 14:16:24.181 +38:10:44.93 14:16:24.181 +38:10:44.93
TNS 2026eou 12:54:48.633 +15:57:25.44 12:54:48.680 +15:57:25.83
TNS 2026eqh 13:33:55.305 +41:25:56.91 13:33:55.305 +41:25:56.91
TNS 2026eqj 12:49:51.906 +34:08:16.98 12:49:51.889 +34:08:16.92
File Comments
OTmags_260308_0.txt

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