Comet C/2025 R2 Swan
in the evening sky
10/19/25

 

            
 Here is a shot
            of comet Swan taken a few nights ago at the day of closest approach
            to the Earth. It was smack dab right in the middle of the scutum
            star clouds and was moving so fast I could not expose longer
            than 1 minute for each subframe to not totally blur out the comet.
            The tail was not seen even in binoculars, however I could see
            the comet naked eye without too much effort. Two shots are shown
            here. The first is with the RASA 11 and the second is a "Context"
            image taken with a 135mm f/2.4 lens simultaneously.

            
From Happy Jack,
            Az, Oct. 19 at 7:15pm MST (Oct 20 @ 2:15 UT), RASA 11 f/2.2,
            ASI6200MM, LRGB = 45m

            
Select an image size for a larger view:

1400 x 1200
            



 This
            shot is with the Samyang 135mm at f/2.4 and is the same exposure
            as above. Note that the comet is contained within the rich starclouds
            of Scutum, and a nice group of dark nebula on the left side.
 

            
Select an image size for a larger view:

1400 x 1200
            


Lens:  11" f/2.2 RASA Schmidt
Platform:  Home Made GEM
Exposure:  11 mins
Location:  Happy Jack, Arizona
Elevation:  7000 ft.
Sky:  Seeing  3/10, Transparency 9/10
Outside Temperature:  35F
Processing Tools:  Maxim DL, Photoshop CS2
HOME   GALAXIES     EMISSION NEBS     REFLECTION NEBS   COMETS  
   GLOBULARS     OPEN CLUST     PLANETARIES     LINKS