Comet C/2025 Panstarrs R3
in the morning sky
4/15/26

 

            
For the next week
            or so, this comet will continue to be the shining star of the
            morning shooting sessions. Now at at 5th magnitude, its is very
            low in the east before sunup, and still just a bit too faint
            to see with the naked eye. But it can be seen in binoculars as
            a 2 degree long streak. Here are two images to share. The first
            is with the 8 inch f/2 RASA and is a two part mosaic showing
            about 6 degrees of tail. The second was plate solved and annotated
            with a grid and a few deep sky objects. The third image here
            was taken with a Canon 6D mounted on a small tracking mount on
            a tripod at the same time and the lens was set for 70mm f/4.
            It is also 40 minutes long and shows the comet has over a 15
            degree tail.

            
-Comet: C/2025 R3
            Panstarrs 

            -Date/Time Local: 4/15/26 4:02am MST

            -Date/Time UT: 4/15/26 11:02 UT

            -FOV: 6.3 x 2.1deg

            -Orientation: W left

            -Seeing:1

            -Transparency: 4

            -Scale: 14.2 arcsec/Pixel

            -Instrument: RASA 8 f/2

            -Exposure: 40 total 

            -Camera: ASI2600MC

            -Location: Payson,AZ

            
Select an image size for a larger view:

RASA 8 f/2

1400 x 1200
            



            
Select an image size for a larger view:

Same, but annnotated

1400 x 1200
            



            
Select an image size for a larger view:

Canon 6d, 70mm f/4 wide angle

1400 x 1200
            


Lens:  8 f/2 RASA Schmidt
Camera: ASI2600 MC
Platform:  Ioptron GEM45
Exposure:  40mins
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing  4/10, Transparency 7/10
Outside Temperature:  45F
Processing Tools:  Maxim DL, Photoshop CS2
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