Comet C/2025 A6 Lemmon
in the Evening sky
10/23/25

 
 Here
            is a new shot of Comet Lemmon from last night. this is a 2 part
            montage with the Samyang 135mm f/2 lens for about 45 mins total.
            What a surprise it was to have the airglow so strong last night
            that rolling bands of intense red and green were scrolling all
            over each subframe! You can imagine what the stacked set looked
            like, green and red mottles everywhere. By manually placing sample
            points very carefully with Graxpert, I was able to clean it up
            pretty well. 

            starting at 7:00pm MST (2:00UT 10/24), 2 panel mosaic with Samyang
            135mm @ f/2.4, RGB = 45 mins total, ZWO ASI2600mc, Payson, Az

            
This shot with Samyang
135mm f/2.4

Select an image size for a larger view:

1400 x 1200
            




            


            
This shot with a Canon 28mm f/4

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1400 x 1200
            


Lens:  Samyang 135mm f/2 @ f/2.4
Camera: ASI2600 MC
Platform:  Ioptron GEM45
Exposure:  45 mins
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing  4/10, Transparency 4/10
Outside Temperature:  49F
Processing Tools:  Maxim DL, Photoshop CS2
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