SN 2018cow
Posted: Sun Jun 24, 2018 1:29 pm
A very faint object:
http://www.astronomerstelegram.org/?read=11727
http://www.rochesterastronomy.org/sn2018/sn2018cow.html
https://wis-tns.weizmann.ac.il/object/2018cow
My observation from last night - bluish featureless continuum: Guide view (off slit guiding): The peak where H-alpha should be doesn't seem to be hotpixel: it's 100A away, and when applying the background galaxy's redshift (4241 +/- 39 km/s), I can measure 6561.2A as its barycenter. So that may be from the galaxy.
The "W" shape (absorptions barycenters: 4912A, 4967A) should be also something real (SNR good enough in the green-blue), but none matching by any atel reports.
I will be interested in comparing our results and learn more, here is mine: Peter
http://www.astronomerstelegram.org/?read=11727
http://www.rochesterastronomy.org/sn2018/sn2018cow.html
https://wis-tns.weizmann.ac.il/object/2018cow
My observation from last night - bluish featureless continuum: Guide view (off slit guiding): The peak where H-alpha should be doesn't seem to be hotpixel: it's 100A away, and when applying the background galaxy's redshift (4241 +/- 39 km/s), I can measure 6561.2A as its barycenter. So that may be from the galaxy.
The "W" shape (absorptions barycenters: 4912A, 4967A) should be also something real (SNR good enough in the green-blue), but none matching by any atel reports.
I will be interested in comparing our results and learn more, here is mine: Peter