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Sunday, March 29, 2015

 

Nova Sagittarii 2015 No. 2 Rebrightens (a bit)

Nova Sagittarii 2015 No. 2 in the lid of the teapot of Sagittarius. This is a stack of 10x15 second exposures, ASA 400, 3x Zoom with my Canon IXUS, taken on 21 March at 5:10 am, click to embiggen24 March, stack of 8 images, same conditions a the 21st.28 March, stack of  10 images, same conditions a the 21st.

 Light curve of  Nova Sagittarii 2015 No. 2. It has faded then rebrightened, and may be fading again


Following Nova Sagittarii 2015 No. 2 has been a bit frustration as there have only been a few days without cloud. Up the top is a series of 3 images from the 21st, 24th and 28.


Animation centred on the nova (couldn't align the  stars properly sorry) showing brightness variation.

On the 21st it was just visible to the uniaded eye with averted vision, and quite clear in binoculars, on the 24th it was no longer unaided eye visible, in binoculars it was obvious, but no longer outstanding. On the 28th it was again just visible to the unaided eye with averted vision, and again brighter in binoculars.

This nova is well worth extended follow up, and may bounce around in brightness like Nova Cent 2013 and  Nova Delphinus 2013.


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