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Supernova in the NGC6946  Galaxy 



Astronomer Telegram:


10427 NuSTAR Observation of SN2017eaw
10421 e-MERLIN 5GHz observations of SN2017eaw in NGC6946
10413 Further AMI-LA observations of SN2017eaw at 15 GHz


NIR follow-up of SN 2017eaw
10401 Optical follow-up of SN 2017eaw
10397 Pre-discovery detection of SN 2017eaw by CRTS-II
10394 AMI-LA 15 GHz Observation of the Type IIP Supernova SN 2017eaw
10388 Low frequency GMRT observations of supernova SN 2017eaw
10385 Correction to object name (17aew -> 17eaw) in Atel #10384
10384 Pre discovery R band limits for SN 2017aew
10382 Swift/UVOT upper limits on SN 2017eaw before explosion
10381 Precise astrometric position of SN 2017eaw
10380 X-ray emission of SN 2017eaw and its progenitor
10378 The Probable Red Supergiant Progenitor of SN 2017eaw
10377 Spectroscopic observation of SN 2017eaw by NUTS (NOT Un-biased Transient Survey)
10376 Spectroscopic Classification of SN 2017eaw in NGC 6946 as a Young Type IIP Supernova
10374 LOT spectroscopic classification of AT 2017eaw in NGC 6946 as a Type II SN
10373 Mid-IR progenitor of AT 2017eaw in NGC 6946
10372 Confirmation of AT 2017eaw, a Probable Supernova in NGC 6946



image 2017eaw (= PSN J20344424+6011359), TNS discovered 2017/05/14.238 by Patrick Wiggins
Found in NGC 6946 at R.A. = 20h34m44s.238, Decl. = +6011'36".00
Located 61".0 west and 143".0 north of the center of NGC 6946 (Discovery image (mirror))
Mag 12.7:5/18, Type IIP (zhost=0.000133) (References: ATEL 10376, 10401, 10397, 10394, 10388, 10384, 10385, 10382, 10381, 10380, 10378, 10377, 10374, 10373, 10372, CBET 4390 VSnet observations, TOCP; SN 2008S, 2004et 2002hh, 1980K, 1969P, 1968D, 1948B, 1939C, 1917A)
2017eaw images sub-page

A listing of Supernovae brighter than 17 Mag. can be found at this site

     I will be  monitoring and calculate its magnitude (dimness) over time. As you  can see by the graph below, from the time I started to monitor it on Aug. 30 2011  it had increased in brightness. Please note that  the smaller the magnitude number the brighter the object is.

     I will keep this graph updated by getting at least one image a night (weather permitting) till it is no longer visible.

     If you  are interested in how to convert ADU ( Analog Digital Units) values to  a Magnitude value, check out this link http://www.warren-wilson.edu/~physics/Contemp-Astronomy/starmag/starmag.html. You  will need the ADU and Magnitude numbers for a reference star  in the same field as the primary object as well as the ADU value of the object in question.  I use Nebulosity to get the ADU figures.

(This Page was last changed 06/04/2017)



These measurements were taken in the visible light without any color filters using an Orion SSP V2 on a SN8 at 5 minute exposure dark subtracted and flat applied.


These images will be updated as I get more data.




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